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Natrolite
Mina Wessels, Hotazel, Kalahari manganese field (KMF), Provincia Septentrional del Cabo, Sudáfrica
7.1 x 6.5 x 4.5 cm (Autor: Michael Shaw) -
Natrolith (Hohentwiel).JPG (Author: Andreas Gerstenberg)
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Natropharmacoalumite
María Josefa Mine, Rodalquilar, Níjar, Almería, Andalucía, Spain
fov 2 mm (Author: Rewitzer Christian)
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Natropharmacoalumite
María Josefa Mine, Rodalquilar, Níjar, Almería, Andalucía, Spain
fov 2 mm (Author: Rewitzer Christian)
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Natropharmacoalumite
Mina María Josefa, Rodalquilar, Níjar, Comarca Metropolitana de Almería, Almería, Andalucía, España
fov 0.7 mm (Autor: Rewitzer Christian) -
Natropharmacoalumite
Mina María Josefa, Rodalquilar, Níjar, Comarca Metropolitana de Almería, Almería, Andalucía, España
fov 1 mm (Autor: Rewitzer Christian) -
Natropharmacoalumite
Mina María Josefa, Rodalquilar, Níjar, Comarca Metropolitana de Almería, Almería, Andalucía, España
fov 2.5 mm (Autor: Rewitzer Christian) -
Natropharmacosiderite
Mina Gold Hill, Gold Hill, Distrito Gold Hill, Condado Tooele, Utah, USA
FOV = 4.00 mm (Autor: Doug) -
Natrophosphate
Poudrette quarry (Demix quarry; Uni-Mix quarry; Desourdy quarry; Carrière Mont Saint-Hilaire), Mont Saint-Hilaire, Rouville RCM, Montérégie, Québec, Canada
FOV=2mm
Clear crystal (Author: Doug)
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Natropyrochlore
Volcán Água de Pau, Água de Pau, Municipio Lagoa, Isla San Miguel, Región Autónoma de las Azores, Portugal
fov 2 mm (Autor: ploum) -
Natropyrochlore
Volcán Água de Pau, Água de Pau, Municipio Lagoa, Isla San Miguel, Región Autónoma de las Azores, Portugal
fov 1.5 mm (Autor: ploum) -
Natropyrochlore
Volcán Água de Pau, Água de Pau, Municipio Lagoa, Isla San Miguel, Región Autónoma de las Azores, Portugal
fov 1.6 mm (Autor: ploum) -
Natrozippeite
Mina Widowmaker, Fry Mesa, Cañón White, Distrito White Canyon, Condado San Juan, Utah, USA
FOV = 2.5 mm (Autor: Doug) -
Natrozippeite
Grupo Mina Parco, Yellow Cat Mesa, Distrito Thompsons (S.E. Thompsons), Condado Grand, Utah, USA
FOV = 1.9 mm (Autor: Doug) -
Naturally etched, deep yellow color, heliodor crystal, from Padre Paraíso, Jequitinhonha valley, Minas Gerais, Southeast Region, Brazil
Size 122 x 13 x 9 mm (Author: olelukoe)
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Naturally etched, gem quality and fully completed topaz crystal floater , from old Ukraine locality - Volodarsk-Volinskiy, not so bad example from this old locality (usually topaz crystals from this place not so good quality)
Size 75 x 52 x 26 mm (Author: olelukoe)
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Naujakasite
Ilímaussaq Intrusive Complex, Narsaq, Greenland
FoV= 3 x 3 cm;
Crystal: 1.5 x 1.2 cm
NAUJAKASITE is by no means an aesthetic mineral but it is deeply exciting conceptually, let us see why:
This string begins with two pieces of Steenstrupine, a mineral found only few places and in low quantities outside the Ilímaussaq Intrusion. It has very complex structure and around 20 different elements in the full formula, many of which are rare ones.
The Naujakasite is similar in distribution, it is practically never found at all outside the Intrusion, even if inside it is locally very common, it reach to be the main component of a rock. But in opposition to Steentrupine, its formula is surprisingly simple: Na6(Fe,Mn)Al4Si8O26
Now, in case of “strange combination of weird elements” we somehow “intuitively” accept that the formation event has been a rare one with only one or very few known occurrences on Earth. Nevertheless seeing such a simple formula with few and common elements, the uniqueness of the Ilímaussaq formation is somehow even more striking.
Strongly simplified, apart from the presence of many rare elements we are talking about a magma with very low concentrations of silicium (quarz is never found in most of the area in the central parts of the Intrusion!) and very high concentrations of sodium (Na) – an element present in high amounts in many Ilímaussaq minerals. (no wonder Sodalite has its type locality here…) (Author: kakov)
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Naujakasite
Ilímaussaq Intrusive Complex, Narsaq, Greenland
FoV: 2,5 x 2 cm
A strange mineral that formed instead of nepheline in certain parts of the hyper-agpaitic magma (=low silica, high sodium) of the Ilímaussaq Intrusion. In spite of not containing any rare elements, it is practically not found anywhere else on Earth.
More info above my other Naujakasite photo that shows a single crystal. On this piece the colour is more fresh, greenish. (Author: kakov)
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Mina Ampliación a Victoria, Sierra de Alcarama, Navajún, Comarca Cervera, La Rioja, España
(Autor: supertxango) -
Nealite from Lavrion, Attica, Greece.
Field of view: 1.2 mm (Author: Rewitzer Christian)
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Nealite, Lavrion, Greece 1 mm (Author: Rewitzer Christian)
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Nealite
Mazarrón, Comarca Alto Guadalentín, Región de Murcia (Murcia), España
FOV 4.8 mm. (Autor: Rewitzer Christian) -
Nealite
Mazarrón, Comarca Alto Guadalentín, Región de Murcia (Murcia), España
FOV 3.8 mm. (Autor: Rewitzer Christian) -
Nealite
Mazarrón, Comarca Alto Guadalentín, Región de Murcia (Murcia), España
FOV 6 mm. (Autor: Rewitzer Christian) -
Nealite
Mazarrón, Comarca Alto Guadalentín, Región de Murcia (Murcia), España
FOV 1.2 mm. (Autor: Rewitzer Christian) -
Nearing the bottom where the vein starts to peter out..still finding druz here but no more large crystals. (Author: Jason)
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Nearly 5 cm long wires of so-called "Schlotsilber" (chimney silver) from Schlema mining district, Erzgebirge, Saxony. Not all dubious silver samples without matrix are manmade in a narrower sense. Some of them have been found when the chimneys of the smelters (f.e. at Freiberg and Schlema-Schneeberg district, Erzgebirge, Saxony) got pulled down. The silver sublimated on the inside of the chimneys. It is told that big chimney fragments fully overgrown by large silver wires have been found... But there´s nothing about ever been published and actually I never saw such "matrix chimney silver". Moreover you don´t see such loose wires that often; characteristic is their luster - the shown sample is, I think, 50 years old and there is no black tarnish on. (Author: Andreas Gerstenberg)
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Nearly home. Some 12 km from our home. (Author: Pierre Joubert)
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Neighborite and Rutile
Poudrette quarry (Demix quarry; Uni-Mix quarry; Desourdy quarry; Carrière Mont Saint-Hilaire), Mont Saint-Hilaire, Rouville RCM, Montérégie, Québec, Canada
FOV=4mm
Rutile is dark crystal to right of neighborite (Author: Doug)
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Neil Prenn intent on digging quartz in a pocket. (Author: Tony L. Potucek)
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Nelson Streetcar (Author: Jimoore)
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Nenadkevichite
Poudrette quarry (Demix quarry; Uni-Mix quarry; Desourdy quarry; Carrière Mont Saint-Hilaire), Mont Saint-Hilaire, Rouville RCM, Montérégie, Québec, Canada
FOV=4mm (Author: Doug)
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Nenadkevichite
Cantera Poudrette, Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canadá
FOV = 2mm (Autor: Doug) -
Nenadkevichite
Cantera Poudrette, Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canadá
FOV = 2mm (Autor: Doug) -
Nenadkevichite
Cantera Poudrette, Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canadá
FOV = 4mm (Autor: Doug) -
Nenthead mine workings. They do tours around the place. (Author: nurbo)
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Neotocite
Cantera Poudrette, Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canadá
FOV = 4mm (Autor: Doug) -
Nephelina and Phlogopite
Auraghuq, Jurm, Valle Koksha, Distritos Khash & Kuran Wa Munjan, Provincia Badakhshan, Afganistán
20 mm x 20 mm (Autor: Manuel Mesa) -
Nepheline
Poudrette quarry (Demix quarry; Uni-Mix quarry; Desourdy quarry; Carrière Mont Saint-Hilaire), Mont Saint-Hilaire, Rouville RCM, Montérégie, Québec, Canada
FOV=4mm
Crude crystals on massive nepheline (Author: Doug)
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Nepheline (?), Aegirine
Ilímaussaq Intrusive Complex, Narsaq, Greenland
FoV: 5 x 4 cm
(side view of the piece on the previous photo)
Formation of Nepheline shows the lack of silicium in the magma.
It can be difficult to distinguish from feldspar, as it has similar colur and hardness, but it lack clear cleavage and has a somewhat greasy lustre - I am almost sure most of the gray substance we see here is nepheline. (in other areas of the same stone there is also a bit of feldspar, see previous pic) (Author: kakov)
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Nepheline on Lazurite
Auraghuq, Jurm, Valle Koksha, Distritos Khash & Kuran Wa Munjan, Provincia Badakhshan, Afganistán
20 mm x 20 mm (Autor: Manuel Mesa) -
Nepheline on Lazurite
Auraghuq, Jurm, Valle Koksha, Distritos Khash & Kuran Wa Munjan, Provincia Badakhshan, Afganistán
20 mm x 20 mm (Autor: Manuel Mesa) -
Nepheline
Löhley, Üdersdorf, Daun, Eifel, Renania-Palatinado/Rheinland-Pfalz, Alemania
48 x 26 x 11 mm (Autor: Rob Schnerr) -
Neptunite
Dallas Gem Mine, New Idria, Diablo Range, San Benito Co., California, USA
fov 35 mm (Author: ploum)
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Neptunite
Dallas Gem Mine, San Benito Co., California, USA
fov 45 mm (Author: ploum)
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Neptunite
San Benito Gem Mine, California, USA.
2cm across (Author: nurbo)
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Neptunite twin (Author: John S. White)
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Neptunite with Benitoite - Dallas Gem Mine - San Benito County - California - large minature (7.0 x 2.0 x 1.5 cm) (Author: jaysminerals)
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Neptunite, Benitoite
Mina California State Gem (Benitoite Gem Mine), Zona San Benito River headwaters, Pico Santa Rita, Distrito New Idria, Condado San Benito, California, USA
3.6 x 3.0 cm (Autor: am mizunaka) -
Neptunite, Joaquinite-(Ce)
Benitoite Mine, New Idria District, Diablo Range, San Benito Co., California, USA (Author: Roger Warin)
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NEPTUNITE, Pyrochlore, Tugtupite
Ilímaussaq Intrusive Complex, Narsaq, Greenland
FoV: 4 x 5 cm (for reference you have the curvature of my finger on the top)
section of Neptunite crystal in right down corner: 3 x 3 mm
I have taken this piece for the relatively well developed Neptunite crystals (NB! this is not a micro photo), the Pyrochlore is more visible in the previous piece, here there are only small spots of it to the right of the central Neptunite area. The Tugtupite is also of very bad quality.
NEPTUNITE is a relatively common mineral in some rocks of the Ilímaussaq complex, among them the beryllium bearing hydrothermal veins. Hence if you have Tugtupite in your collection on a relatively decent sized matrix, it is highly probable you also will have Nepunite in it somewhere.
We are not talking about showy crystals like the well known wonders from San Benito, California, the grains/crystals here seldom get over a few mm and they are usually surrounded by other minerals. Nevertheless the Ilímaussaq Neptunite has some really interesting features, of which I would highlight:
1) It always shows the deep red colour.
2) Association: in the Tugtupite bearing hydrothermal veins the Neptunite grains are almost always directly associated with the niobium mineral Pyrochlore, that forms yellow or light brown irregular spots or oblong areas with a greasy lustre. Inside or near this substance we have dark grains, clearly deep red with a 10x loupe and often of romoidal shape – this is the Neptunite!
3) Cultural aspects: Although the type locality is not Ilímaussaq rather the Narsarsuk pegmatite located in the Igaliko intrusive complex, the two locations are relatively close to each other (and type locality Neptunite is practically impossible to get!). Furthermore we can say that the name given to the mineral is somehow equally justified at this site: In the Narsarsuk pegmatite there are big amounts of Aegirine, named after the sea god Aegir in the Nordic mythology – this association inspired the usage of “Neptun”, the Roman sea god in the nomenclature of the associated mineral. And well, Aegirine is also a common mineral in the Ilímaussaq complex… (Author: kakov)
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Neptunite
Mina California State Gem (Benitoite Gem Mine), Zona San Benito River headwaters, Pico Santa Rita, Distrito New Idria, Condado San Benito, California, USA
3.3 x 6.2 cm (Autor: crosstimber) -
Neptunite
Mina California State Gem (Benitoite Gem Mine), Zona San Benito River headwaters, Pico Santa Rita, Distrito New Idria, Condado San Benito, California, USA
80 X 61 mm (Autor: Manuel Mesa) -
Neptunite
Mina California State Gem (Benitoite Gem Mine), Zona San Benito River headwaters, Pico Santa Rita, Distrito New Idria, Condado San Benito, California, USA
1.5 x 2.3 cm (Autor: crosstimber) -
Neptunite
Mina California State Gem (Benitoite Gem Mine), Zona San Benito River headwaters, Pico Santa Rita, Distrito New Idria, Condado San Benito, California, USA
91 x 63 mm (Autor: Sante Celiberti) -
Neptunite
Mina California State Gem (Benitoite Gem Mine), Zona San Benito River headwaters, Pico Santa Rita, Distrito New Idria, Condado San Benito, California, USA
91 x 63 mm (Autor: Sante Celiberti) -
Neptunite
Mina California State Gem (Benitoite Gem Mine), Zona San Benito River headwaters, Pico Santa Rita, Distrito New Idria, Condado San Benito, California, USA
fov 6.2 mm (Autor: ploum) -
Neptunite
Mina California State Gem (Benitoite Gem Mine), Zona San Benito River headwaters, Pico Santa Rita, Distrito New Idria, Condado San Benito, California, USA
fov 6.2 mm (Autor: ploum) -
Neustädtelite
Mina Alcantarilla, Encinilla Baja-Ventosilla, Belalcázar, Comarca Los Pedroches, Córdoba, Andalucía, España
FOV 0,9 mm (Autor: Rewitzer Christian) -
new DH 1.jpg (Author: Jason)
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new DH 1a.jpg (Author: Jason)
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new DH 3.jpg (Author: Jason)
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new dh 4.jpg (Author: Jason)
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new DH 4a.jpg (Author: Jason)
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new dh 5.jpg (Author: Jason)
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new dh 6.jpg (Author: Jason)
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new dh 6a.jpg (Author: Jason)
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new dh 7.jpg (Author: Jason)
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new dh 7a.jpg (Author: Jason)
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new fluors 003.JPG (Author: Glenn Rhein)
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new fluors 005.JPG (Author: Glenn Rhein)
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new fluors 006.JPG (Author: Glenn Rhein)
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new spec. 1.jpg (Author: Jason)
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new titanites 004.JPG (Author: Glenn Rhein)
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new titanites 009.JPG (Author: Glenn Rhein)
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New to our collection. (Author: Gail)
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NEWberbes1.jpg (Author: Tobi)
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Newberyite, a real Type Locality peice from Skipton Caves, Mount Widderin (Anderson’s Hill), Skipton, Corangamite Shire, Victoria, Australia. It is about 1" in diammter (2.54 cm) (Author: Jim Prentiss)
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NEWelmwood1.jpg (Author: Tobi)
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newloslamentos.jpg (Author: d_hawtho)
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Hot Springs, Condado Garland, Arkansas, USA
fov 0.9 mm (Autor: ploum) -
newmacro4175.jpg (Author: ploum)
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nfnfnf.JPG (Author: Pierre Joubert)
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Nice 3 cm hematite (Author: Darren)
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Nice almandine crystals (up to 5 mm) in pegmatite vein from Heiligendamm, Mecklenburg. (Author: Andreas Gerstenberg)
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nice clear crystal with faint smoky phantom, clearview claim (Author: thecrystalfinder)
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Nice cluster of 2 raspberry Fluorite cubes from Elmwood, TN. Measures 7 x 8 x 4 cm and weighs 150 grams (Author: VRigatti)
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Nice colorless baryte crystal (1,2 cm with hematite inclusions) on alterated dolomite from the Gehn quarry, Uffeln, Munsterland, Westphalia. (Author: Andreas Gerstenberg)
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Nice copper dendrites on 7,5 cm wide sample. Classic from Friedrichssegen mine, Bad Ems, Nassau, Rhineland-Palatinate. The nearby Bergmannshoffnung mine gave good copper samples too. (Author: Andreas Gerstenberg)
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Nice crystals. (Author: Gail)
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Nice Galena crystal formed by the faces of the cube and the octahedron. On Dolomite matrix. Règia Mine.
Specimen size: 3,5 x 3 x 2,5 cm.
Jordi Fabre Collection.
Fabre Minerals Photo. (Author: Joan Rosell)
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Nice golden andradite in a 4 cm shallow vug. Self-collected at Orogrande, New Mexico, USA. (Author: Darren)
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Nice golden-colored andradite on a 6 cm piece (Author: Darren)
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Nice grey calcite crystal (3,5 cm) from Rabenstein lime mine (today the sight "Rabensteiner Felsendome"), Chemnitz, Saxony. The locality developed excellent calcite samples in the old days. Rabenstein calcites rank with the best Saxonian, may be even with the best German calcites. (Author: Andreas Gerstenberg)
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Nice marcasite cluster (3 cm, undamaged) in marl from the Kleeberg quarry, Lengerich near Osnabrück, Westphalia. (Author: Andreas Gerstenberg)
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Nice marcasite piece with some brown baryte on. Rather old find from Zobes, Voigtland, Saxony. About 6,5 cm in width. (Author: Andreas Gerstenberg)
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Nice mini clusters..these tend to have smokey or ammy phantoms in them and they sit real well on a shelf or desk-uncleaned (Author: Jason)
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Nice piece...glad to have it on a base. (Author: Gail)
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Nice polished pastel agate from the classic location Wendelsheim near Alzey, Rhineland-Palatinate. Sample 6 cm. (Author: Andreas Gerstenberg)
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Nice rainbow fluorite (polished) from Hermine mine, Wölsendorf, Bavaria. (Author: Andreas Gerstenberg)
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Nice schorl crystals (3,5 cm) with muscovite from the Papiermühle granite gravel pit near Selb, Fichtelgebirge, Bavaria. (Author: Andreas Gerstenberg)
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Nice yellow tetrahedrons of the rare beryllium silicate helvite from the type locality, Unverhofft Glück mine near Antonsthal, Erzgebirge, Saxony. Sitting with some diopsite and sphalerite on calcite. The largest tetrahedron measures a little more than 3 mm. (Author: Andreas Gerstenberg)
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Nice, new trowel. (Author: vic rzonca)
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Nickeline
Cala Mines - Cala - Huelva - Andalusia - Spain
6,9 x 3,8 cm
Aggregate of crystals; 1,2 cm. Found in 2001. (Author: DAni)
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Nickeline
Eisleben, Mansfeld Basin, Sajonia-Anhalt/Sachsen-Anhalt, Alemania
2 mm (Autor: Rewitzer Christian) -
Nickelskutterudite (chloanthite)
Mina Weißer Hirsch, Distrito Schneeberg, Erzgebirgskreis, Sajonia/Sachsen, Alemania
7 x 5 cm (Autor: Andreas Gerstenberg) -
Nifontovite, 6 cm across group. Rey y Reina Mine, Charcas, San Luis Potosi, Mexico.
Big brother to the one my daughter won the Lidstrom Trophy with at Tucson in 2009 (Author: Peter Megaw)
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Nifontovite, 7 cm single crystal, Rey y Reina Mine, Charcas, San Luis Potosi, Mexico.
Inclusions are bakerite and calcite (Author: Peter Megaw)
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Nifontovite
Charcas
San Luis Potosi
Mexico
2,2cm (Author: parfaitelumiere)
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Niobokupletskite
Cantera Poudrette, Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canadá
FOV = 2mm (Autor: Doug) -
Niveolanite
Cantera Poudrette, Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canadá
FOV = 4.0 mm (Autor: Doug) -
Nontronit (St. Andreasberg).JPG (Author: Andreas Gerstenberg)
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Nontronite (variety Ca-rich Nontronite)
Pedrera Can Súria (Pedrera Guixeres), Maçanet de la Selva, Comarca La Selva, Gerona / Girona, Cataluña / Catalunya, España
FOV 7 mm (Autor: Firmo Espinar) -
Nontronite (variety Ca-rich Nontronite)
Pedrera Can Súria (Pedrera Guixeres), Maçanet de la Selva, Comarca La Selva, Gerona / Girona, Cataluña / Catalunya, España
FOV 7 mm (Autor: Firmo Espinar) -
Nontronite (variety Ca-rich Nontronite)
Pedrera Can Súria (Pedrera Guixeres), Maçanet de la Selva, Comarca La Selva, Gerona / Girona, Cataluña / Catalunya, España
FOV 8 mm (Autor: Firmo Espinar) -
Nontronite
Pedrera Can Súria (Pedrera Guixeres), Maçanet de la Selva, Comarca La Selva, Gerona / Girona, Cataluña / Catalunya, España
FOV 23mm (Autor: Firmo Espinar) -
Nontronite
Pedrera Can Súria (Pedrera Guixeres), Maçanet de la Selva, Comarca La Selva, Gerona / Girona, Cataluña / Catalunya, España
50mm x 46mm x 40mm (Autor: Firmo Espinar) -
Norbergite and Spinel on Calcite
Oak-saung-taung, Valle Mogok, Mogok, Distrito Pyin-Oo-Lwin, Región Mandalay (Division Mandalay), Myanmar (Burma)
Specimen size: 9.3 × 8.4 × 4.3 cm (Autor: Jordi Fabre) -
Norbergite, Diopside SW UV
Rhein Property, Amity NY USA
15 cm (Author: Glenn Rhein)
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Nordstrandite
Poudrette quarry (Demix quarry; Uni-Mix quarry; Desourdy quarry; Carrière Mont Saint-Hilaire), Mont Saint-Hilaire, Rouville RCM, Montérégie, Québec, Canada
FOV=2mm (Author: Doug)
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Normandite
Cantera Poudrette, Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canadá
FOV = 2mm (Autor: Doug) -
north geronimo mine La Paz AZ.jpg (Author: d_hawtho)
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Not even frequent is bismuthinite from Altenberg, Erzgebirge, Saxony. The pic shows a 1 x 1 cm needle aggregate on fluorite and quartz from the Römer Shaft, dating from the 1950s. (Author: Andreas Gerstenberg)
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Not long after starting to dig. (Author: Pierre Joubert)
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Not much to look at, really. (Author: vic rzonca)
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Not so bad topaz crystal, that nested in a matrix of lepidolite crystals, from Virgem da Lapa, Jequitinhonha valley, Minas Gerais, Southeast Region, Brazil
Size 105 x 70 x 60 mm (Author: olelukoe)
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Not so easy ;) (Author: ploum)
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Not the ’Famous Grouse’ - this is the infamous ptarmigan! Brown in summer and white in winter, this fine fellow appears to be in full breeding plumage. I think that’s why he was standing his ground - you don’t normally get this close to them, even with a zoom lens. (Author: Mike Wood)
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Not the last day on the bench, but close. Was that a snow flake Don? (Author: vic rzonca)
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Now it is my turn at the pocket. (Author: Pierre Joubert)
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Nut clearing. (Author: vic rzonca)
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nvnvnv.JPG (Author: Pierre Joubert)
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O,O,O wow and this....! (Author: h.abbasi)
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Obidian Picture one, Origin Unknown
7.7cm x 4.9cm x 3.1cm (Author: Screenname)
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Oblique view, crossed-eye stereo pair (Author: Gerhard Niklasch)
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Obsidian Picture two, Origin Unknown
7.7cm x 4.9cm x 3.1cm (Author: Screenname)
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Oco agates
(Author: Kelly Jean)
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Octahedral Fluorite crystals with well defined edges and faces. Pointe Kurz (3600 m altitude) Haute-Savoie, France. Main crystal size is 2.1 x 1.5 cm.
Specimen & Photo: Fabre Minerals (Author: Joan Rosell)
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Octahedral Fluorite on Albite matrix with Smoky Quartz. (2001) Pointe Kurz (3600 m altitude) Haute-Savoie, France. Size 19x 15.5 x 9 cm.
Specimen & Photo: Fabre Minerals (Author: Joan Rosell)
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Octahedral Fluorite with Dolomite and Quartz
Mina Shangbao, Leiyang, Prefectura Hengyang, Provincia Hunan, China
Specimen size: 11.3 × 9.5 × 9.2 cm / main crystal (Autor: Jordi Fabre)Octahedral Fluorite with Dolomite and Quartz
Mina Shangbao, Leiyang, Prefectura Hengyang, Provinc -
Octahedral green Fluorite. O.T.E. Prospect, Grant County, New Mexico, USA. The "digger" is a friend of mine. About 13 cm. (Author: Darren)
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Octahedral Pyrite; Huanzala Mine, Huallanca dist., Huanaco, Peru.
Specimen dimensions 60 x 38 x 24mm, xx to 31mm (edge), weight 98g. GN’s collection id 09PEP-001.
Stereo pair, taken in direct sunlight. (Author: Gerhard Niklasch)
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Octahedral Pyrite; Huanzala Mine, Huallanca dist., Huanaco, Peru.
Specimen dimensions 60 x 38 x 24mm, xx to 31mm (edge), weight 98g. GN’s collection id 09PEP-001.
Stereo pair, taken in direct sunlight. (Author: Gerhard Niklasch)
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Octahedral Pyrite; Huanzala Mine, Huallanca dist., Huanaco, Peru.
Specimen dimensions 60 x 38 x 24mm, xx to 31mm (edge), weight 98g. GN’s collection id 09PEP-001.
Taken in direct sunlight. (Author: Gerhard Niklasch)
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Octahedral Pyrite; Huanzala Mine, Huallanca dist., Huanaco, Peru.
Specimen dimensions 60 x 38 x 24mm, xx to 31mm (edge), weight 98g. GN’s collection id 09PEP-001.
Taken in direct sunlight. (Author: Gerhard Niklasch)
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Offretite
Fittà, Soave, Verona Province, Veneto, Italy
1.32 mm geode with some Offretite acycular crystals under ball formation (Author: Matteo_Chinellato)
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Offretite
Fittà, Soave, Verona Province, Veneto, Italy
1.45 mm area with several Offretite crystal under ball formation (Author: Matteo_Chinellato)
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Offretite
Scagno Mt., Case Nori, Montorso Vicentino, Vicenza province, Veneto, Italy
Nice group of 2 mm Offrétite tufts (Author: Matteo_Chinellato)
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Offset at the fault line of the Holyoke range. (Author: vic rzonca)
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Oh my... (Author: Gail)
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Oisgill Bay, Isle of Skye, Scotland
The north end of Oisgill bay. An Ceannaich is the cliff around the corner. The cliffs are 600 feet (190m) high and scary / awe-inspiring !
Photo taken Easter 2013. (Author: Mike Wood)
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Okaruso mine flourite crystal cluster-namibia-73g.jpg (Author: Anton Potgieter)
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Okenite
Kandivali Quarry, Malad, Mumbai District, Maharashtra, India
17.4 x 29.8 cm.
An elongated cavity in black basalt lined with white spheres of acicular okenite, prismatic white laumontite, and hemispheres of white gyrolite. (Author: crosstimber)
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Okenite
Khnadivali Quarry, Mumbai, Maharashtra, India
1mm x Sub mm (Author: Mark Ost)
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Okenite
Khnadivali Quarry, Mumbai, Maharashtra, India
1mm diameter (Author: Mark Ost)
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Okenite
Poonah, Maharashtra, India
8x6x5 cm (Author: B&A)
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Okenite, Gyrolite, Quartz
Cantera Malad, Malad, Mumbai (Bombay), Distrito Mumbai, Maharashtra, India
18.0 x 13.5 cm (Autor: am mizunaka) -
Okenite, Gyrolite
Distrito Nashik (Nasik), Maharashtra, India
11 x 10 cm (Autor: Volkmar Stingl) -
Okenite, Prehnite, Apophyllite, Gyrolite
Mumbai (Bombay), Mumbai District (Bombay District), Maharashtra, India
6.3 x 4 cm (Author: xdxucn)
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Okenite, Prehnite, Apophyllite, Gyrolite
Mumbai (Bombay), Mumbai District (Bombay District), Maharashtra, India
6.3 x 4 cm (Author: xdxucn)
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Okenite, Stilbite
Valea Arsului, Brad, Transylvania, Romania
FOV 45 mm
An active quarry close to the old gold mines of Brad yield nice and unusual Zeolite minerals in Dacite (Author: Gerhard Brandstetter)
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Okenite
Cantera Malad, Malad, Mumbai (Bombay), Distrito Mumbai, Maharashtra, India
Detail (Autor: Firmo Espinar) -
Okenite
Cantera Malad, Malad, Mumbai (Bombay), Distrito Mumbai, Maharashtra, India
Detail (Autor: Firmo Espinar) -
Okenite
Cantera Malad, Malad, Mumbai (Bombay), Distrito Mumbai, Maharashtra, India
97mm x 63mm x 26mm (Autor: Firmo Espinar) -
Okenite
Cantera Malad, Malad, Mumbai (Bombay), Distrito Mumbai, Maharashtra, India
97mm x 63mm x 26mm (Autor: Firmo Espinar) -
Okenite
Cantera Bombay, Distrito de Mumbai suburbano, Maharashtra, India
90 mm x 40 mm x 10 mm (Autor: Dany Mabillard) -
okoruso-2-1.jpg (Author: Montanpark)
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OLD BRIDGE VERSUS NEW BRIDGE 1
An early 1900s photograph captures the raw, industrial might of the Roebling suspension bridge at Ojuela, its steel towers piercing the sky above a deck lined with tram tracks. A vital artery of commerce, it tirelessly ferried ore from the mountain’s depths, its existence defined by the relentless clatter of carts and the dust of a booming mine. A century later, this monument to engineering has undergone a profound metamorphosis. The cacophony of industry has faded into an echoing silence, and the bridge has been reborn as a celebrated icon for adventurers.
Today, its purpose is not to extract wealth from the earth, but to offer an experience suspended between sky and canyon. The steel skeleton remains, but the heavy tracks have been replaced by a rustic wooden walkway that invites visitors to traverse the gorge. Each footstep on the creaking planks, each gust of wind that sets the structure into a gentle, thrilling sway, serves as a visceral connection to the past. The passage offers breathtaking, panoramic views of the ghost town the bridge once single-handedly sustained.
This transformation extends to the very ground once dominated by the mining tramway. Where carts once disgorged their rocky cargo, a vibrant marketplace now thrives. Local vendors and artisans display their wares — gleaming mineral specimens, handcrafted trinkets, and traditional foods — offering a new, gentler kind of local resource. Visitors can now zip-line across the canyon, soaring past the historic structure. The Ojuela Bridge stands not as a static relic, but as a kinetic monument, connecting modern thrill-seekers to the rugged soul of a history they can feel with every swaying step. (Author: silvia)
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Old french label, former Leonhard collection. (Author: Andreas Gerstenberg)
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Old hematite specimen from Tilkerode, Harz mtns. (famous for selenide minerals). 52 mm in width. (Author: Andreas Gerstenberg)
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Old label (around 1900) (Author: Andreas Gerstenberg)
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Old label of a Moschellandsberg cinnabar. About 1880. (Author: Andreas Gerstenberg)
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Old label Stephanite Bräunsdorf (Author: Andreas Gerstenberg)
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Old labels of calcite (Author: Roger Warin)
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OLD MINE VERSUS MODERN MINE 1
A photograph from the early 1900s captures the sweeping vista and desolate beauty of Ojuela. Anchoring the view in the lower right, the weathered, steel head frame of the Socavon Shaft stands as a stark monument against the rugged landscape.
A century later, the gaze northward finds only silence and skeletal remains. The landscape is dominated by a profound shadow, a scar on the earth that refuses to heal; the Boca de Mina, the Mouth of the Mine. This vast, dark chasm — the original glory hole — is a gaping wound testifying to a history of arduous toil.
While this great mine endures, carved in stone, the works of man have proven fleeting. The steel head frame of the Socavon shaft has surrendered to the elements, its bones scattered by the wind. Entirely vanished is the company town that was once a world unto itself. Where grids of simple houses sheltered five thousand souls, the wind now scours empty ground, and faint outlines in the dirt are the only ghosts of those dusty streets. No echo remains of the modest schoolhouse, the offices, the shafts, the workshops, no phantom of the bustling stores that once anchored this outpost of rock and toil.
The mountain gave its treasure, and in the passage of a century, it has reclaimed all but the wound. The great mine has outlived its children, its open mouth now a monument to their memory and the profound quiet that follows. (Author: silvia)
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OLD MINE VERSUS MODERN MINE 2
The upper photograph, dating to the late 1800s, reveals the Ojuela miner’s village as a bustling, self-contained settlement clinging to the mountainside. Tiered rows of miners’ modest dwellings are perched above the industrial heart of the operation: a dense cluster of offices, workshops, and amenities. Dominating the foreground, two main head frames stand as powerful sentinels, their structures marking the vital gateways to the subterranean workings that were the community’s entire reason for being. This was a place of relentless industry, carved directly into the unforgiving landscape.
Over a century later, the modern photograph tells a story of profound decay and reclamation. The mighty head frames have vanished, and the steep slopes where the miners’ dwellings once stood are now hauntingly bare, their former existence marked only by scattered stone foundations — the ghostly footprints of a lost community. Below, the once-thriving centre of the mine has crumbled into dilapidated shells, a somber monument to a bygone era of immense wealth and hardship. Amidst the general ruin, the more robust, stone-walled structures of what were likely the workshops, blacksmith, and engineering facilities stubbornly endure, their skeletal remains the last vestiges of the mine’s formidable power. (Author: silvia)
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OLD MINE VERSUS MODERN MINE 3
A photograph from the late 1890s captures the Ojuela mine at the zenith of its industrial power, a complex and sprawling machine carved into the rugged landscape. The view is dense with the sinews of production: robust workshops, the towering head frame marking the mine’s entrance and the substantial structures of ore processing facilities. A web of tram tracks, the arteries of the operation, crisscrosses the terrain, connecting the various stages of extraction and refinement. Nearby, power plants stand ready to feed the energy required to drive this relentless engine of industry.
A century later, a modern photograph reveals a scene of profound silence and decay. The once-intricate industrial infrastructure has largely vanished, reclaimed by the desert or salvaged for its materials. What remains is a collection of skeletal ruins, hollowed-out shells succumbing to the elements. The paths of the tramways are now just faint scars on the land. The workshops, once filled with the clang of hammers, are crumbling and roofless. Most prominent are the massive, stubborn foundations of the ore treatment facilities, their thick stone and concrete walls a testament to the immense scale of the machinery they once supported, now standing as silent tombs of a glorious, bygone era. (Author: silvia)
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OLD MINE VERSUS MODERN MINE 4
A photograph from the late 1800s, looking south towards the Ojuela bridge, reveals the staggering scale of the mining operations at their peak. On the east side of the canyon, a prominent head frame stands sentinel while plumes of steam billow from a powerhouse, speaking to the immense energy being consumed. The western slopes are a hive of industrial activity, densely packed with an array of essential buildings — from administrative offices, and assay facilities, where the ore’s value was determined, to the ever-busy workshops. Further in the background, another head frame marks the entrance to the subterranean labyrinth of stopes and adits, the source of the mine’s vast wealth.
In a contemporary view taken over a century later, the landscape is one of haunting emptiness. The immense industrial infrastructure —the head frames, the powerhouses, and the intricate network of tramways that once ferried ore across the canyon — has almost entirely vanished, dismantled by time and salvage. Only a few stone structures stubbornly survive, yet they are mere shells of their former selves. Roofless, gutted, and exposed to the elements, these dilapidated ruins, devoid of the machinery and life that once filled them, stand as a quiet, somber epilogue, offering only faint echoes of the great mine that once dominated this canyon. (Author: silvia)
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old shaft in Peña del Hierro (Nerva, Huelva, Spain). The origin of the famous river Tinto is in the vicinity...All this zone is famous because the Astrobiology work performed here. The zone has been considered a "Mars analog" on Earth and the study of extremophile organisms received a lot of attention here. (Author: Cesar M. Salvan)
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Old vial with rounded pyrope crystals ("Bohemian Garnet") from Zöblitz, Erzgebirge, Saxony, a famous pyrope locality. (Author: Andreas Gerstenberg)
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Old-style ANSP-label (Author: Andreas Gerstenberg)
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Older austinite find...most sold as smithsonite. Piece is 10 cm across (Author: Peter Megaw)
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Olivenite
Christiana Mine, Kamariza Mines, Agios Konstantinos, Lavrion, Attikí, Greece
fov 3 mm (Author: ploum)
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Olivenite
Christiana mine, Laurion, Attika, Greece
fov 1.5 mm (Author: ploum)
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Olivenite
Ibiajara, Bahia, Brazil
3.9 x 5.8 cm.
Slender green olivenite crystals to 1 cm in length coated with micro-spheres of cornwallite and malachite on a gossanous matrix. From a new find in 2006. (Author: crosstimber)
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Olivenite
Laurion, Greece
FOV 10 mm (Author: ploum)
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Olivenite
Serpieri Mine, Kamariza Mines, Agios Konstantinos, Lavrion, Attikí, Greece
fov 3.5 mm (Author: ploum)
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Olivenite and Agardite
Mina Christiana, Minas Kamariza, Agios Konstantinos, Distrito minero Lavrion, Prefectura Attikí (Attica), Grecia
fov 2.0 mm (Autor: ploum) -
Olivenite and Agardite
Mina Clara, Valle Rankach, Oberwolfach, Wolfach, Selva Negra, Baden-Württemberg, Alemania
fov 1.1 mm (Autor: ploum) -
Olivenite and azurite
Christiana Mine, Laurion, Greece
fov 9 mm (Author: ploum)
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Olivenite and Azurite
Mina Christiana, Minas Kamariza, Agios Konstantinos, Distrito minero Lavrion, Prefectura Attikí (Attica), Grecia
fov 3 mm (Autor: ploum) -
Olivenite and Azurite
Mina Christiana, Minas Kamariza, Agios Konstantinos, Distrito minero Lavrion, Prefectura Attikí (Attica), Grecia
fov 8.0 mm (Autor: ploum) -
Olivenite and Calcite
Mina Tsumeb, Tsumeb, Región Otjikoto, Namibia
28mm x 21mm x 16mm (Autor: Heimo Hellwig) -
Olivenite and conichalcite
fov 3 mm
(Author: ploum)
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Olivenite and Conichalcite
fov 5.3 mm
(Author: ploum)
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Olivenite and conichalcite
Mina Christiana, Minas Kamariza, Agios Konstantinos, Distrito minero Lavrion, Prefectura Attikí (Attica), Grecia
fov 2 mm (Autor: ploum) -
Olivenite and Conichalcite
Mina Christiana, Minas Kamariza, Agios Konstantinos, Distrito minero Lavrion, Prefectura Attikí (Attica), Grecia
fov 1.8 mm (Autor: ploum) -
Olivenite and Conichalcite
Mina Christiana, Minas Kamariza, Agios Konstantinos, Distrito minero Lavrion, Prefectura Attikí (Attica), Grecia
fov 1.6 mm (Autor: ploum) -
Olivenite and Conichalcite
Mina Christiana, Minas Kamariza, Agios Konstantinos, Distrito minero Lavrion, Prefectura Attikí (Attica), Grecia
fov 1.8 mm (Autor: ploum) -
Olivenite and Conichalcite
Mina Hilarion, Zona Hilarion, Minas Kamariza, Agios Konstantinos, Distrito minero Lavrion, Prefectura Attikí (Attica), Grecia
fov 1.8 mm (Autor: ploum) -
Olivenite and Conichalcite
Mina Christiana, Minas Kamariza, Agios Konstantinos, Distrito minero Lavrion, Prefectura Attikí (Attica), Grecia
fov 1.8 mm (Autor: ploum) -
Olivenite and Cornwallite
Distrito Ibiajara, Rio do Pires, Bahia, Región Nordeste, Brasil
fov 2.2 mm (Autor: ploum) -
Olivenite and Cornwallite
Distrito Ibiajara, Rio do Pires, Bahia, Región Nordeste, Brasil
fov 2.2 mm (Autor: ploum) -
Olivenite and Cornwallite
Distrito Ibiajara, Rio do Pires, Bahia, Región Nordeste, Brasil
fov 2.6 mm (Autor: ploum) -
Olivenite and Cornwallite
Distrito Ibiajara, Rio do Pires, Bahia, Región Nordeste, Brasil
fov 2.6 mm (Autor: ploum) -
Olivenite and Cornwallite
Distrito Ibiajara, Rio do Pires, Bahia, Región Nordeste, Brasil
fov 2.6 mm (Autor: ploum) -
Olivenite and Quartz
Mina Serpieri, Minas Kamariza, Distrito minero Lavrion, Prefectura Attikí (Attica), Grecia
fov 2.2 mm (Autor: ploum) -
Olivenite and Quartz
Mina Serpieri, Minas Kamariza, Distrito minero Lavrion, Prefectura Attikí (Attica), Grecia
fov 2.2 mm (Autor: ploum) -
Olivenite and Quartz
Mina Serpieri, Minas Kamariza, Distrito minero Lavrion, Prefectura Attikí (Attica), Grecia
fov 2.2 mm (Autor: ploum) -
Olivenite and Quartz
Cornwall, Inglaterra / Reino Unido
(Autor: Jordi Fabre) -
Olivenite from Clara Mine, Black Forest, Germany.
Field of view: 1.6 mm (Author: Rewitzer Christian)
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Olivenite from Cocotas Mines, Tijola, Granada, Spain.
Field of view: 3.2 mm (Author: Rewitzer Christian)
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Olivenite on Conichalcite
Mina Hilarion, Zona Hilarion, Minas Kamariza, Agios Konstantinos, Distrito minero Lavrion, Prefectura Attikí (Attica), Grecia
fov 1.8 mm (Autor: ploum) -
Olivenite with azurite
Christiana mine, Laurion, Greece
fov 4 mm (Author: ploum)
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Olivenite with conichalcite
Christiana mine, Laurion, Greece
fov 4 mm (Author: ploum)
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Olivenite with conichalcite
Christiana mine, Laurion, Greece
fov 4mm (Author: ploum)
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Olivenite with conichalcite and azurite
Christiana mine, Laurion, Greece
fov 4 mm (Author: ploum)
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Olivenite with malachite
Christiana mine, Laurion, Greece
fov 4 mm (Author: ploum)
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Olivenite xls
Tsumeb, Namibia
Size: Small Cabinet
Specimen: William Pinch Collection
Photo: Jeff Scovil & The RRUFF Project (Author: Pinch Bill)
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Olivenite, azurite
Christiana Mine, Kamariza Mines, Agios Konstantinos, Lavrion, Attikí, Greece
3 mm (Author: ploum)
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Olivenite, azurite and conichalcite
Christiana mine, Laurion, Greece
fov 9 mm (Author: ploum)
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Olivenite, Cornwallite
Mina Gold Hill, Gold Hill, Distrito Gold Hill, Condado Tooele, Utah, USA
FOV = 3.5 mm (Autor: Doug) -
Olivenite, quartz, calcite
Clara Mine, Wolfach, Black Forest, BW, Germany
fov 3mm (Author: ploum)
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Olivenite, quartz, calcite
Clara Mine, Wolfach, Black Forest, BW, Germany
fov 3 mm (Author: ploum)
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Olivenite
Clara Mine, Wolfach, Black Forest, Germany
fov 3 mm (Author: ploum)
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Olivenite
Mina Clara, Valle Rankach, Oberwolfach, Wolfach, Selva Negra, Baden-Württemberg, Alemania
fov 1.7 mm (Autor: ploum) -
Olivenite
Mina Clara, Valle Rankach, Oberwolfach, Wolfach, Selva Negra, Baden-Württemberg, Alemania
fov 1.7 mm (Autor: ploum) -
Olivenite
Mina Clara, Valle Rankach, Oberwolfach, Wolfach, Selva Negra, Baden-Württemberg, Alemania
fov 1.5 mm (Autor: ploum) -
Olivenite
Mina Clara, Valle Rankach, Oberwolfach, Wolfach, Selva Negra, Baden-Württemberg, Alemania
fov 1.5 mm (Autor: ploum) -
Olivenite
Mina Christiana, Minas Kamariza, Agios Konstantinos, Distrito minero Lavrion, Prefectura Attikí (Attica), Grecia
fov 2.6 mm (Autor: ploum) -
Olivenite
Mina Christiana, Minas Kamariza, Agios Konstantinos, Distrito minero Lavrion, Prefectura Attikí (Attica), Grecia
fov 2.6 mm (Autor: ploum) -
Olivenite
Mina María Josefa, Rodalquilar, Níjar, Comarca Metropolitana de Almería, Almería, Andalucía, España
FOV 7 mm (Autor: Firmo Espinar) -
Olivenite
Mina Serpieri, Minas Kamariza, Distrito minero Lavrion, Prefectura Attikí (Attica), Grecia
fov 5.5 mm (Autor: ploum) -
Olivenite
Mina Tsumeb, Tsumeb, Región Otjikoto, Namibia
34mm x 21mm x 25mm (Autor: Heimo Hellwig) -
Olivenite
Mina Majuba Hill, Distrito Antelope, Condado Pershing, Nevada, USA
FOV = 3.4 mm (Autor: Doug) -
Olivenite
Mina Clara, Valle Rankach, Oberwolfach, Wolfach, Selva Negra, Baden-Württemberg, Alemania
FOV = 3.4 mm (Autor: Doug) -
Olivenite
Mina Burrus, Distrito Pyramid, Condado Washoe, Nevada, USA
FOV = 1.7 mm (Autor: Doug) -
Olivenite
Mina Clara, Valle Rankach, Oberwolfach, Wolfach, Selva Negra, Baden-Württemberg, Alemania
fov 2.1 mm (Autor: ploum) -
Olivenite
Mina Clara, Valle Rankach, Oberwolfach, Wolfach, Selva Negra, Baden-Württemberg, Alemania
fov 1.8 mm (Autor: ploum) -
Olivenite
Mina Clara, Valle Rankach, Oberwolfach, Wolfach, Selva Negra, Baden-Württemberg, Alemania
fov 1.55 mm (Autor: ploum) -
Olivenite
Mina Clara, Valle Rankach, Oberwolfach, Wolfach, Selva Negra, Baden-Württemberg, Alemania
fov 2.3 mm (Autor: ploum) -
Olivenite
Mina Milpillas, nivel 992, Cuitaca, Municipio Santa Cruz, Sonora, México
Crystal size: 1.2 × 0.2 cm (Autor: Jordi Fabre) -
Olivenite
Mina Majuba Hill, Distrito Antelope, Condado Pershing, Nevada, USA
5.5 x 3.2 x 2.0 cm (Autor: Michael Shaw) -
Olivenite
Minas Kamariza, Agios Konstantinos, Distrito minero Lavrion, Prefectura Attikí (Attica), Grecia
3,5 x 3,5 cm (Autor: Volkmar Stingl) -
Olivenite
Mina Clara, Valle Rankach, Oberwolfach, Wolfach, Selva Negra, Baden-Württemberg, Alemania
1,5 x 1,3 cm (Autor: Volkmar Stingl) -
Olivenite
Mina Milpillas, nivel 992, Cuitaca, Municipio Santa Cruz, Sonora, México
2.0 x 1.3 cm (Autor: Michael Shaw) -
olivin.jpg (Author: Tobi)
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Olivine Group (variety peridot)
Pyaung Gaung mine, Bernardmyo village, north of Mogok, Burma (Myanmar).
17 mm. (Author: Ru Smith)
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Olivine Group (variety peridot)
Pyaung Gaung mine, Bernardmyo village, north of Mogok, Burma (Myanmar).
15 mm. (Author: Ru Smith)
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Olivine Group (variety peridot)
Pyaung Gaung mine, Bernardmyo village, north of Mogok, Burma (Myanmar).
22 mm long. (Author: Ru Smith)
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