-
Molybdofornacite
Mina Dulcinea de Llampos, Cachiyuyo de Llampos, Provincia Copiapó, Región Atacama, Chile
0.55 mm (Autor: ploum) -
Molybdofornacite
Mina Dulcinea de Llampos, Cachiyuyo de Llampos, Provincia Copiapó, Región Atacama, Chile
0.3 mm (Autor: ploum) -
Monazite
Ampitilina - Betsiboka Valley
7 cm (Author: Roger Warin)
-
Monazite
L’Homme de Beurre, La Lauzière massif, Savoie, Rhône-Alpes, France
Fov 3 mm (Author: ploum)
-
Monazite and adularia
L’Homme de Beurre, La Lauzière massif, Savoie, Rhône-Alpes, France
fov 3 mm (Author: ploum)
-
Monazite on Anatase and with Rutile
L'Homme de Beurre, Macizo La Lauzière, Saint-Jean-de-Maurienne, Saboya, Auvergne-Rhône-Alpes, Francia
fov 1.6 mm (Autor: ploum) -
Monazite with Rutile on Anatase
Col de la Madeleine, Savoie, France
fov 0.8 mm (Author: ploum)
-
Monazite with Rutile on Anatase
Col de la Madeleine, Savoie, France
fov 0.8 mm (Author: ploum)
-
Monazite with Rutile on Anatase
L'Homme de Beurre, Macizo La Lauzière, Saint-Jean-de-Maurienne, Saboya, Auvergne-Rhône-Alpes, Francia
fov 0.70 mm (Autor: ploum) -
Monazite, Anatase, Quartz and Chlorite
Vallon de la Rave, Macizo La Lauzière, Saint-Jean-de-Maurienne, Saboya, Auvergne-Rhône-Alpes, Francia
fov 4.5 mm (Autor: ploum) -
Monazite, Anatase, Quartz and Chlorite
Vallon de la Rave, Macizo La Lauzière, Saint-Jean-de-Maurienne, Saboya, Auvergne-Rhône-Alpes, Francia
fov 4.5 mm (Autor: ploum) -
Monazite, Quartz and Chlorite
Vallon de la Rave, Macizo La Lauzière, Saint-Jean-de-Maurienne, Saboya, Auvergne-Rhône-Alpes, Francia
fov 4.5 mm (Autor: ploum) -
Monazite, Quartz and Chlorite
Vallon de la Rave, Macizo La Lauzière, Saint-Jean-de-Maurienne, Saboya, Auvergne-Rhône-Alpes, Francia
fov 4.5 mm (Autor: ploum) -
Monazite-(Ce)
Hopffeldboden, Sbg, Austria
0.98
Photo Matteo Chinellato
Collection Domenico Preite (Author: domenico)
-
Monazite-(Ce)
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)
-
Monazite-(Ce)
Trimouns Talc Mine, Luzenac, Ariège, Midi-Pyrénées, France
1.01 mm (Author: Matteo_Chinellato)
-
Monazite-(Ce)
Zagi mountain, Pakistan
fov 20 mm (Author: ploum)
-
Monazite-(Ce)
Mina Rist, Hiddenite, Condado Alexander, North Carolina, USA
fov 1.5 mm (Autor: ploum) -
Monazite-(Ce)
Cantera Poudrette, Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canadá
FOV = 2mm (Autor: Doug) -
Monazite-(Ce)
Mina Rist, Hiddenite, Condado Alexander, North Carolina, USA
fov 2.2 mm (Autor: ploum) -
Monazite-(Ce)
Mina Trimouns, Luzenac, Haute-Ariège, Foix, Departamento Ariège, Occitanie, Francia
fov 5 mm (Autor: ploum) -
Monazite-(Ce)
Mina Rist, Hiddenite, Condado Alexander, North Carolina, USA
fov 1.8 mm (Autor: ploum) -
Monazite-(Ce)
Mina Trimouns, Luzenac, Haute-Ariège, Foix, Departamento Ariège, Occitanie, Francia
fov 3.90 mm (Autor: ploum) -
Monazite
Col de la Madeleine, Savoie, France
fov 3 mm (Author: ploum)
-
Monazite
Mina Rist, Hiddenite, Condado Alexander, North Carolina, USA
fov 2.2 mm (Autor: ploum) -
Monazite
Mina Trimouns, Luzenac, Haute-Ariège, Foix, Departamento Ariège, Occitanie, Francia
fov 3.6 mm (Autor: ploum) -
Monazite
Mina Trimouns, Luzenac, Haute-Ariège, Foix, Departamento Ariège, Occitanie, Francia
fov 3.4 mm (Autor: ploum) -
Mont-Blanc, Mer de Glace, et Moi.
This photo taken 2005, from near the Courvercle Hut. (Author: Mike Wood)
-
Montebrasite.
Wetloo quarter, Kyauk Pyat That, W of Mogok, Burma.
9 cm specimen, with crystals to 4 cm. (Author: Ru Smith)
-
Montebrasite.
Wetloo quarter, Kyauk Pyat That, W of Mogok, Burma.
9 cm specimen, with crystals to 4 cm. (Author: Ru Smith)
-
Montebrasite
Concesión Telírio, Linópolis, Divino das Laranjeiras, Vale do Rio Doce, Minas Gerais, Brasil
1.3 x 3.1 cm (Autor: crosstimber) -
Monteregianite-(Y)
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)
-
Moonen Bay, Isle of Skye, Scotland, UK
Waterstein Head and Moonen Bay cliffs, viewed from Neist Point. September 2009. (Author: Mike Wood)
-
Moonen Bay, Isle of Skye, Scotland, UK
Looking across Moonen Bay (southward). The cliffs are very steep, often with rockfall, especially when it rains. The tide cuts off access to most of the ’beach’ at the foot of the cliffs. The cliffs in the distance (Ramasaig Cliff) reach over 700’ high (230m).
Photo taken April 2005 (Author: Mike Wood)
-
Mordenite
Sgurr nam Boc, Isle of Skye, Scotland, UK
10 cm x 5 cm x 6 cm deep
Mordenite in delicate crystals to 10mm long with a few stilbite crystals, in a quartz-lined cavity in basalt. This zeolite mineral is very silica-rich and to my knowledge is only found at this locality (on Skye, that is), where quartz is plentiful.
Self-collected 1998. (Author: Mike Wood)
-
Mordenite and Heulandite
Concesión Rat's Nest, Challis, Distrito Bay Horse , Custer County, Idaho, USA
5.8 x 5.3 x 3.6 cm (Autor: Michael Shaw) -
Mordenite, 'Heulandite'
Arroyo Rock, Stevenson, Condado Skamania, Washington, USA
(Autor: Doug) -
Mordenite, 'Stellerite' and Hyalite
Monte Bérico, Caxias do Sul, Nordeste Rio-grandense, Rio Grande do Sul, Brasil
Crystals with 4 mm (Autor: Anísio Cláudio) -
Mordenite, Erionite, Clinoptilolite-Ca
Cantera Cape Lookout, Netarts, Condado Tillamook, Oregon, USA
FOV = 3.8 mm (Autor: Doug)Mordenite, Erionite, Clinoptilolite-Ca
Cantera Cape Lookout, Netarts, Condado Tillamook, Or -
Mordenite, Erionite-Ca, Clinoptilolite-Ca
Cantera Cape Lookout, Netarts, Condado Tillamook, Oregon, USA
FOV = 2.7 mm (Autor: Doug)Mordenite, Erionite-Ca, Clinoptilolite-Ca
Cantera Cape Lookout, Netarts, Condado Tillamook, -
Mordenite
Distrito Ahmadnagar, Maharashtra, India
6.0 x 8.9 cm (Autor: crosstimber) -
Mordenite
Localidad de Mordenita Carretera Puketui, Hikuai, Distrito Thames-Coromandel, Región Waikato, Isla Norte, Nueva Zelanda
(Autor: Doug) -
Mordenite
Valle Fassa, Provincia Trento, Trentino-Alto Adige (Trentino-Südtirol), Italia
62 x 61 mm (Autor: Sante Celiberti) -
Mordenite
Valle Fassa, Provincia Trento, Trentino-Alto Adige (Trentino-Südtirol), Italia
62 x 61 mm (Autor: Sante Celiberti) -
More cavities where large spondumene crystals were removed. (Author: Pierre Joubert)
-
More copper related mineral on quartz. (Author: Pierre Joubert)
-
More European Classics. An european collector’s dream: Epidote from Knappenwand, Austria. Very few specimens are as perfect as this one from Folch’s collection. This one, also with Fluorapatite crystals, is 14 cm. (5½ inches) across. (Author: Joan Rosell)
-
More flower magic! (Author: Pierre Joubert)
-
More flowers. (Author: Pierre Joubert)
-
More Penetrating Chalcopyrite Crystals (Author: Samuel)
-
More Tabular Galenas (Author: Sammy)
-
Morenci Azurite, 25 x 15 mm (Author: nurbo)
-
Morganite (Author: Craig Mercer)
-
Morganite (Author: Craig Mercer)
-
Morganite, Minas Gerais, Southeast Region, Brazil
Size 105 x 93 x 45 mm (Author: olelukoe)
-
Morganite, Peech, Konar (Kunar; Konarh; Konarha; Nuristan) Province, Afghanistan
Spc. Num. - B-007
Size 140 x 50 x 72 mm (Author: olelukoe)
-
Morganite, Konar (Kunar; Konarh; Konarha; Nuristan) Province, Afghanistan
Size 70 x 65 x 60 mm (Author: olelukoe)
-
Morinite, Wavellite
Mina Silver Coin, Valmy, Distrito Iron Point, Condado Humboldt, Nevada, USA
FOV = 1.9 mm (Autor: Doug) -
Moschellandsbergite
H. Ungemach’s label (Author: Roger Warin)
-
Moschellandsbergite
Landsberg (Moschellandsberg), Alsenz-Obermoschel, Palatinate, Rhineland-Palatinate, Germany
5 mm
A 5 mm group of crystallized Moschellandsbergite associated with Cinnabar, from old classic locale. (Author: Simone Citon)
-
Moschellandsbergite
Mexico
7 mm
exceptional crystals (Author: Roger Warin)
-
Moschellandsbergite
Mexico
rear side
same specimen (Author: Roger Warin)
-
Moschellandsbergite
Landsberg (Moschellandsberg), Alsenz-Obermoschel, Palatinado/Pfalz, Renania-Palatinado/Rheinland-Pfalz, Alemania
54mm (Autor: Gail) -
Hvalfjörður, Reikiavik Norte, Islandia
(Autor: Bergur_E_Sigurdarson) -
Mostly drusy small crystals on matrix. (Author: Pierre Joubert)
-
Mostly prehnite and friends.
All Westfield, Massachusetts, USA
Field of view 12"x12’x24". (Author: vic rzonca)
-
Motramite on and in calcite.
Tsumeb, Namibia
61 x 45 x 30 mm
Same as above. (Author: Pierre Joubert)
-
Motramite on and in calcite.
Tsumeb, Namibia
61 x 45 x 30 mm
Same as above. (Author: Pierre Joubert)
-
Motramite on and in calcite.
Tsumeb, Namibia
61 x 45 x 30 mm (Author: Pierre Joubert)
-
Mottanaite-(Ce)
Monte Cavalluccio, Campagnano di Roma, Ciudad metropolitana de Roma Capital, Lacio/Lazio, Italia
X c. 1 mm (Autor: Volkmar Stingl) -
Mottanaite-(Ce)
Monte Cavalluccio, Campagnano di Roma, Ciudad metropolitana de Roma Capital, Lacio/Lazio, Italia
3 x 2 cm (Autor: Volkmar Stingl) -
Mottramite
Ojuela Mine, Level 35, Mapimi, Durango, Mexico
3.8 x 5.2 cm.
Dark green, botryoidal mottramite on limonitic matrix from the find in 2011. (Author: crosstimber)
-
Mottramite
Ojuela Mine, Mapimí, Durango, Mexico.
11 cms. (Author: javmex2)
-
Mottramite
Ojuela Mine, Mapimí, Durango, Mexico
9.8 x 5.0 cm (Author: Don Lum)
-
Mottramite
Ojuela Mine, Mapimí, Durango, Mexico
9.8 x 5.0 cm (Author: Don Lum)
-
Mottramite
Tsumeb Mine, Tsumeb, Namibia
4.5 x 7.3 cm.
Arborescent olive-green mottramite on flattened rhombs of colorless calcite, some of which have reddish tints due to included hematite. (Author: crosstimber)
-
Mottramite
Tsumeb, Namibia
3 cm (Author: Herman van Dennebroek)
-
Mottramite
Tsumeb, Namibia
37 x 30 x 20 mm
Same as above. (Author: Pierre Joubert)
-
Mottramite
Tsumeb, Namibia
37 x 30 x 20 mm
Same as above. (Author: Pierre Joubert)
-
Mottramite
Tsumeb, Namibia
37 x 30 x 20 mm (Author: Pierre Joubert)
-
Mottramite and Cerussite
Mina Tsumeb, Tsumeb, Región Otjikoto, Namibia
51mm x 32mm x 25mm (Autor: Heimo Hellwig) -
Mottramite and Mimetite
Mina Tsumeb, Tsumeb, Región Otjikoto, Namibia
150mm x 80mm x 60mm (Autor: Heimo Hellwig) -
Mottramite and Mimetite
Mina Tsumeb, Tsumeb, Región Otjikoto, Namibia
150mm x 80mm x 60mm (Autor: Heimo Hellwig) -
Mottramite and Mimetite
Mina Tsumeb, Tsumeb, Región Otjikoto, Namibia
150mm x 80mm x 60mm (Autor: Heimo Hellwig) -
Mottramite covered calcite.
Tsumeb, Namibia
Calcite crystal is 1 cm
Just on the edges of the calcite the Mottramite is crystalised in small tree forms (Author: Herman van Dennebroek)
-
Mottramite on Calcite
Mina Tsumeb, Tsumeb, Región Otjikoto, Namibia
21mm x 35mm x 32mm (Autor: Heimo Hellwig) -
Mottramite on Calcite
Mina Tsumeb, Tsumeb, Región Otjikoto, Namibia
54mm x 30mm x 38mm (Autor: Heimo Hellwig) -
Mottramite on Calcite
Mina Tsumeb, Tsumeb, Región Otjikoto, Namibia
54mm x 30mm x 38mm (Autor: Heimo Hellwig) -
Mottramite on quartz matrix
Level 35, América Poniente? or Lugar San Juan Poniente, Mina Ojuela, Mapimi, Durango, Mexico
9 x 8 x 8 cm
Same specimen than above but trimmed a little. (Author: Jean Sendero)
-
Mottramite ps. wulfenite
Mina Total Wreck, Arroyo Cienega, The Narrows, Distrito Empire, Montes Empire, Condado Pima, Arizona, USA
2.6 x 3.0 cm (Autor: crosstimber) -
Mottramite stalactie
Level 35? or Lugar San Juan Poniente, Mina Ojuela, Mapimi, Durango, Mexico
14 x 9 x 8
After a bit of trimming and cleaning, it should look like a beauty.
Tallest stalactite is 2.5 cm in height. (Author: Jean Sendero)
-
Mottramite with wulfenite
Level 35? or Lugar San Juan Poniente, Mina Ojuela, Mapimi, Durango, Mexico
14 x 9 x 8
Backside of the specimen photographed above. Shows two nice dipyramidal yellow wulfenites sticking out of the limonitic matrix. (Author: Jean Sendero)
-
Mottramite, Calcite
Mina Tsumeb, Tsumeb, Región Otjikoto, Namibia
60 x 33 mm (Autor: Sante Celiberti) -
Mottramite, Malachite, Azurite
Mina Tsumeb, Tsumeb, Región Otjikoto, Namibia
70x50mm (Autor: Heimo Hellwig)Mottramite, Malachite, Azurite
Mina Tsumeb, Tsumeb, Región Otjikoto, Namibi -
Mottramite, Malachite, Azurite
Mina Tsumeb, Tsumeb, Región Otjikoto, Namibia
70x50mm (Autor: Heimo Hellwig)Mottramite, Malachite, Azurite
Mina Tsumeb, Tsumeb, Región Otjikoto, Namibi -
Mottramite, Malachite, Azurite
Mina Tsumeb, Tsumeb, Región Otjikoto, Namibia
70x50mm (Autor: Heimo Hellwig)Mottramite, Malachite, Azurite
Mina Tsumeb, Tsumeb, Región Otjikoto, Namibi -
Mottramite, Malachite, Azurite
Mina Tsumeb, Tsumeb, Región Otjikoto, Namibia
70x50mm (Autor: Heimo Hellwig)Mottramite, Malachite, Azurite
Mina Tsumeb, Tsumeb, Región Otjikoto, Namibi -
Mottramite, Vanadinite
Shelby Mine, White Hills, Cerbat Mountains, Gold Basin District, Mohave County, Arizona, USA
FOV = 3.2 mm (Autor: Doug) -
Mottramite, Vanadinite
Mina Ford, Rambla Tucson, Mammoth, Distrito Mammoth, Condado Pinal, Arizona, USA
FOV = 1.2 mm (Autor: Doug) -
Mottramite, Wulfenite
Mina Ojuela, Mapimí, Municipio Mapimí, Durango, México
100 X 55 X 50 mm (Autor: Robert Seitz) -
Mottramite.
Ojuela Mine, Mun de Mapimi, Durango, Mexico.
FOV 20 x 20 mm (Author: nurbo)
-
Mottramite.
Ojuela Mine, Mun de Mapimi, Durango, Mexico.
FOV 20 x 15 mm approx (Author: nurbo)
-
Mottramite.
Ojuela Mine, Mun de Mapimi, Durango, Mexico.
55 x 40 mm (Author: nurbo)
-
Mottramite
Mina Ojuela, nivel 35, Mapimí, Municipio Mapimí, Durango, México
4.4 x 6.0 cm (Autor: crosstimber) -
Mottramite
Mina Tsumeb, Tsumeb, Región Otjikoto, Namibia
73mm x 105mm x 92mm (Autor: Heimo Hellwig) -
Mottramite
Mina Ford, Rambla Tucson, Mammoth, Distrito Mammoth, Condado Pinal, Arizona, USA
FOV = 3.4 mm (Autor: Doug) -
Mottramite
Mina Last Chance, Río Washougal, Distrito Washougal, Condado Skamania, Washington, USA
FOV = 1.3 mm (Autor: Doug) -
Motukoreaite
Stradner Kogel, Wilhelmsdorf, Gleichenberger, Bad Gleichenberg, Südoststeiermark, Estiria/Steiermark, Austria
2,5 x 1,2 cm (Autor: Volkmar Stingl) -
Motukoreaite
Stradner Kogel, Wilhelmsdorf, Gleichenberger, Bad Gleichenberg, Südoststeiermark, Estiria/Steiermark, Austria
2,5 x 1,2 cm (Autor: Volkmar Stingl) -
Moved mostly by hand. It can be fussy business. (Author: vic rzonca)
-
Moved mostly by hand. We do have mechanical advantage. (Author: vic rzonca)
-
moving along... (Author: Gail)
-
Mr Gauche. His son currently has the mining rights on Blesberg and Swartberg mines. (Author: Pierre Joubert)
-
Mrazekite
Mina Senhora da Assunção, Aldeia Nova, Ferreira de Aves, Sátão, Distrito Viseu, Portugal
FOV 1.5 mm (Autor: Cesar M. Salvan) -
Mullite
Cantera Caspar, Volcán Bellerberg, Ettringen, Mayen, Eifel, Renania-Palatinado/Rheinland-Pfalz, Alemania
FOV appr. 4 mm (Autor: Rob Schnerr) -
Multiple specimens
(Author: Kharv)
-
Murdochite and Ferrinatrite
Mina La Compañía, Caracoles, Distrito Sierra Gorda, Provincia Tocopilla, Región Antofagasta, Chile
fov 0.60 mm (Autor: ploum) -
Murdochite on Quartz
Mina La Compañía, Caracoles, Distrito Sierra Gorda, Provincia Tocopilla, Región Antofagasta, Chile
fov 0.60 mm (Autor: ploum) -
Murdochite, Mimetite
Mina Quo Vadis, Henderson, Distrito Alunite, Condado Clark, Nevada, USA
FOV = 1.2 mm (Autor: Doug) -
Murmanite
Peninsula Kola, (probably the Lovozero Massif), Russia
FoV= 4 x 3 cm;
crystal: 1,5 x 0,5 cm
MURMAINTE is a titanium and niobium containing sorosilicate, closely related in composition and structure with Epistolite and Vuonnemite, both of which are already pictured above in the this string.
On fresh surfaces the he color is more pinkish than here.
I would like to highlight the lustre of this mineral, subtle and difficult to describe, mindat calls it “greasy, pearly” other sources use the wording “silverlike”. Altogether this is a good reminder of the diversity of lustres in the mineral kingdom that we should experience directly and not only through the limited expressions for lustre in language.
As for the genesis, Murmanite belongs to a category of minerals that are not crystallized from melts or solutions, but form exclusively by transformation of other phases. (Khomyakov library(.)iem(.)ac(.)ru(/)exper(/)v10_1(/)49(.)pdf) (Author: kakov)
-
Murray Mine Stibnite with "sugarcube" Barite personally collected by Casey Jones (large cabinet). Size: 20.5 cm (Author: GneissWare)
-
Musca domestica (not a mineral)
fov 0.62 mm
(Author: ploum)
-
Musca domestica (not a mineral)
fov 1.72 mm
(Author: ploum)
-
Muscovite
Aldea Velho Mine, Conselheiro Pena, Minas Gerais, Brazil
9.3 x 12.6 cm.
Intergrown silvery pseudo-hexagonal muscovite crystals with gemmy pinkish areas. Dark green hexagonal prisms of fluorapatite to 0.6 cm are scattered about on the surfaces of the muscovite. (Author: crosstimber)
-
Muscovite
Branchville Quarry, Branchville, Fairfield Co., Connecticut, USA
5.0 x 7.1 cm
Lamellar, rounded muscovite in a quartz and albite matrix. This form of muscovite is sometimes known as "ball peen mica" for obvious reasons. (Author: crosstimber)
-
Muscovite
Khargulook, near Sabsar, Skardu District, Gilgit-Baltistan, Pakistan
8.1 x 9.2 cm.
Fan-shaped group of silvery muscovite crystals to 5.0 cm on edge with platy white cleavelandite crystals. (Author: crosstimber)
-
Muscovite
Linopolis, Minas Gerais, Brazil
9.0 x 9.5 cm.
Intergrown books of golden-yellow muscovite crystals to 2 cm. (Author: crosstimber)
-
Muscovite
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)
-
Muscovite
Rodinha Mine, Itinga, Minas Gerais, Brazil
5.0 x 8.6 cm.
Golden yellow crystals of “star muscovite” covering a matrix of white
albite. Collected in 2012. (Author: crosstimber)
-
Muscovite
Ze Pinto prospect, Conselheiro Pena, Minas Gerais, Brazil
5.3 x 6.3 cm.
Intergrown rosettes of sharp silvery pseudohexagonal muscovite crystals. This locality and the Aldea Velho Mine may be the same place, or very close by. (Author: crosstimber)
-
Muscovite #1.jpg (Author: Bruce Sevier)
-
Muscovite #1A.jpg (Author: Bruce Sevier)
-
Muscovite #1B.jpg (Author: Bruce Sevier)
-
Muscovite #1C.jpg (Author: Bruce Sevier)
-
Muscovite #1D.jpg (Author: Bruce Sevier)
-
Muscovite #1E.jpg (Author: Bruce Sevier)
-
Muscovite #1F.jpg (Author: Bruce Sevier)
-
Muscovite #1G.jpg (Author: Bruce Sevier)
-
Muscovite (variety fuchsite), Pyrite
Trabajos en carretera Pauna-San Pablo de Borbur (Mina de la Carretera), Municipio Pauna, Cinturón Esmeraldífero Occidental, Departamento Boyacá, Colombia
55x32x11mm (Autor: Fiebre Verde) -
Muscovite (variety fuchsite), Pyrite
Trabajos en carretera Pauna-San Pablo de Borbur (Mina de la Carretera), Municipio Pauna, Cinturón Esmeraldífero Occidental, Departamento Boyacá, Colombia
55x32x11mm (Autor: Fiebre Verde) -
Muscovite (variety fuchsite), Pyrite
Trabajos en carretera Pauna-San Pablo de Borbur (Mina de la Carretera), Municipio Pauna, Cinturón Esmeraldífero Occidental, Departamento Boyacá, Colombia
55x32x11mm (Autor: Fiebre Verde) -
Muscovite (variety fuchsite), Pyrite
Trabajos en carretera Pauna-San Pablo de Borbur (Mina de la Carretera), Municipio Pauna, Cinturón Esmeraldífero Occidental, Departamento Boyacá, Colombia
55x32x11mm (Autor: Fiebre Verde) -
Muscovite (variety fuchsite), Pyrite
Trabajos en carretera Pauna-San Pablo de Borbur (Mina de la Carretera), Municipio Pauna, Cinturón Esmeraldífero Occidental, Departamento Boyacá, Colombia
55x32x11mm (Autor: Fiebre Verde) -
Muscovite (variety fuchsite), Pyrite
Trabajos en carretera Pauna-San Pablo de Borbur (Mina de la Carretera), Municipio Pauna, Cinturón Esmeraldífero Occidental, Departamento Boyacá, Colombia
55x32x11mm (Autor: Fiebre Verde) -
Muscovite (variety fuchsite), Pyrite
Trabajos en carretera Pauna-San Pablo de Borbur (Mina de la Carretera), Municipio Pauna, Cinturón Esmeraldífero Occidental, Departamento Boyacá, Colombia
55x32x11mm (Autor: Fiebre Verde) -
Muscovite - Quartz
Suiza
60 mm x 40 mm x 30 mm (Autor: Dany Mabillard) -
Muscovite after Andalusite (variety pinite)
Valle Lüsens, Valle Sellrain, Distrito Innsbruck-Land, Tirol Norte, Tirol, Austria
8,5 x 7,5 cm (Autor: Volkmar Stingl) -
Muscovite after Tourmaline
Mina Sapo, Ferruginha, Conselheiro Pena, Vale do Rio Doce, Minas Gerais, Brasil
82 mm x 37 mm x 35 mm (Autor: Don Lum) -
Muscovite and Quartz
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
16 cm x 14 cm x 8 cm (Autor: silvia) -
Muscovite book specimen 1 (other side) (Author: Turbo)
-
Muscovite book specimen 1: 12 cm in length, 2 cm thick, Wilmington, DE (Author: Turbo)
-
Muscovite book specimen 2: 11 cm in length, 1 cm thick, Wilmington, DE (Author: Turbo)
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Muscovite ps. after tourmaline
Sapo Mine, Conselheiro Pena, Minas Gerais, Brazil
5.3 x 6.6 cm.
Intergrown books of silvery muscovite crystals replacing a tourmaline crystal. The trigonal tourmaline x-section is distinctly visible when viewed from the top. Collected in 2010. (Author: crosstimber)
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Muscovite, Albite (variety pericline)
Floitengrund, Valle Ziller (Zillertal), Tirol Norte, Tirol, Austria
3 x 2,5 cm (Autor: Volkmar Stingl)Muscovite, Albite (variety pericline)
Floitengrund, Valle Ziller (Zillertal), Tirol Norte, Tirol, -
Muscovite, Aquamarine
Chumar Bakhoor, Valle Hunza, Distrito Nagar, Gilgit-Baltistan (Áreas del Norte), Paquistán
Specimen size 13 cm, beryl crystal 2,5 x 3 cm, lar (Autor: Tobi) -
Muscovite, Quartz, Chlorite
Canteras Beura, Beura-Cardezza, Valle Ossola, Provincia Verbano-Cusio-Ossola, Piamonte (Piemonte), Italia
121 x 72 mm (Autor: Sante Celiberti) -
Muscovite, Quartz, Chlorite
Canteras Beura, Beura-Cardezza, Valle Ossola, Provincia Verbano-Cusio-Ossola, Piamonte (Piemonte), Italia
121 x 72 mm (Autor: Sante Celiberti) -
Muscovite, Quartz
Keystone, Distrito Keystone, Condado Pennington, South Dakota, USA
64 mm x 61 mm x 54 mm (Autor: Don Lum) -
Muscovite, Siderite, Arsenopyrite, Marcasite
7.3 × 6.9 × 3.8 cm
(Author: Michael Shaw)
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Muscovite/Cassiterite combo, Mt Xuebaoding, China. (Author: Samuel)
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Muscovite:
Teofilo Otoni, Minas Gerais, Brazil
(2 1/4" x 2" x 1 1/2") (Author: Bruce Sevier)
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Muscovite
Pedrera Mas Sever, Massabè (Mas Ceber), Sils, Comarca La Selva, Gerona / Girona, Cataluña / Catalunya, España
5 cm width. (Autor: Joan R.) -
Muscovite
Sabsar, Valle Indo, Distrito Baltistán, Gilgit-Baltistan (Áreas del Norte), Paquistán
8.0 x 9.0 cm (Autor: crosstimber) -
Muscovite
Cantera Nello Teer Crabtree Creek, Raleigh, Condado Wake, North Carolina, USA
5.0 x 8.2 cm (Autor: crosstimber) -
Muscovite
Cantera Fillow, Branchville, Redding, Condado Fairfield, Connecticut, USA
4.0 x 6.0 cm (Autor: crosstimber) -
Muscovite
Hiddenite, Condado Alexander, North Carolina, USA
1.9 x 2.0 cm (Autor: crosstimber) -
Muscovite
Floitengrund, Valle Ziller (Zillertal), Tirol Norte, Tirol, Austria
4,5 x 4,5 cm (Autor: Volkmar Stingl) -
Muscovite
Mina Reynolds, Springfield, Condado Sullivan, New Hampshire, USA
2.4 x 5.5 x 7.9 cm (Autor: Michael Shaw) -
Mushistonite on Kesterite on Cassiterite
Monte Xuebaoding, Pingwu, Prefectura Mianyang, Provincia Sichuan, China
73 x 50 x 40 mm (Autor: GneissWare)Mushistonite on Kesterite on Cassiterite
Monte Xuebaoding, Pingwu, Prefectura Mianyang, Provincia Sic -
Mushroom in a garden mason.JPG (Author: h.abbasi)
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Muzo (distrito minero), Cinturón Esmeraldífero Occidental, Departamento Boyacá, Colombia
(Autor: Fiebre Verde) -
My 8 cm Navidad Creedite - been looking for one for awhile and this stood out - bought at the 2011 Deming, NM show. (Author: Darren)
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My beloved little car in the distance. (Author: Pierre Joubert)
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My best find at this location was this crystal. Joe was there when I uncovered the fissure containing it. It was quickly apparent that something good was going to come out of this fissure when while extracting the quartz it suddenly became glassy. It was as if the quartz exploded into crystals in a zone within the fissure. The sunlight now directly overhead reflected shiny faces on the nearly black quartz as it lay half buried in the ground. I saw one edge of the crystal above and knew immediately it was going to be killer. After quickly brushing the dirt off and holding it up in the sun Joe and I stared in awe. "Damn!", Joe exclaimed. This was a huge burst of motivation for us. Exhausted and drenched in sweat in the burning sun we suddenly found a second wind knowing that the surrounding area must contain more goodies. Joe exemplified this by promptly finding another fissure six feet away in which he extracted two or three nice crystals and some facet grade smoky quartz material. (Author: Scott LaBorde)
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My best pocket, the one on the right, and the crystals found in it. (Author: John S. White)
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My camp site next to a small stream. (Author: Pierre Joubert)
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My camp site. (Author: Pierre Joubert)
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My candidate for the finest gypsum crystal to come out of Naica. This sits in an exhibit case in the mine office and is flawless (Author: Peter Megaw)
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My chum for scale. (Author: vic rzonca)
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My chum stands on the sandstone level that marks the bottom of the crystal bearing strata. The bathtub is thirty feet up from here. (Author: vic rzonca)
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My favorite chinese cinnabar 4,5cm (Author: parfaitelumiere)
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My favorite minaret quartz (Author: John S. White)
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My Favourite crystal a Petalite (not phenakite) from Mogok, measures 20 x 4mm (Author: nurbo)
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My final resting place before the last stretch; a steep descent. (Author: Pierre Joubert)
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My first amethyst
Unknown
3,5 x 3 cm. (Author: Anísio Cláudio)
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My first Fluorite. This octahedral Fluorite comes from Zarembo Island, which is near Wrangel, in Southeast Alaska. I had to go there one day, in 1980, to fix a broken helicopter and our customer, a geologist, gave me this piece. The crystals are very pale light green, practically colorless on drusy Quartz, and average 1/4" (6mm) the specimen is about 4" x 2 1/2" x 1 1/4" (10.1cm x 6.4cm x 3.2cm) (Author: Jim Prentiss)
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My first Malachite. I have to agree with Jordi on the sacredness of leaving a mineral in its natural form. This is not what I had ordered, the dealer was helping. Still it has the habit I am most enamored with, and kids think its pretty. It is 5" x 3 1/2 x 2" (12.7cm x 8.9cm x 5.1cm) (Author: Jim Prentiss)
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My little Red Cloud Mine toenail wulfenite. Like the one below, just came back to me in a trade with the guy I had sold it to, was glad to get it for $3 a few years ago!!! And am happy to have it back! (Author: Darren)
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My love for dogs in one picture: Me playing with some of the puppies from my parents’ last litter in 2017 (Author: Tobi)
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My mat cutter and workspace, the trusty ole kitchen counter. (Author: Gail)
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My small 4 cm Cavansite, bought from David Garske a few months ago. (Author: Darren)
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My whole back porch full of crystal and crystals plates..mostly smokey’s but some will be ammy’s and a few of the larger plates tend to have a light purple color in some of them (Author: Jason)
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Myargyrite
San Genaro Mine, Castrovirreyna District, Castrovirreyna Province, Huancavelica Department, Peru
3,5x3x1,5 cm
Well crystallized, gray metallic Myargyrite, associated with reddish Pyrargyrite, from a classic peruan Silver mine. (Author: Simone Citon)
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Mylonitized Calcite and Willemite
Franklin, New Jersey, USA
6x3 cm (Author: LennyL)
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Myself and Colin set off to climb Aiguille du Moine. The climbing is steep and airy, but relatively easy. Colin was refreshed by his luxurious night’s sleep in the hut and was way out in front - you can see him working his way leftwards along some sloping ledges. Actually I think at that point he waited for me ’cos a rope was required... (Author: Mike Wood)
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N’Chwaning Rhodochrosite (Author: Gail)
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N/A
(Author: Forrestblyth)
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NA
10cm
(Author: Forrestblyth)
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NA
(Author: Forrestblyth)
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NA
(Author: Forrestblyth)
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NA
(Author: Forrestblyth)
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NA
(Author: Forrestblyth)
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NA
Northumberland, Inglaterra / Reino Unido
(Autor: Forrestblyth) -
Nadorite
Langban, Värmland, Sweden
fov 2.5 mm (Author: Rewitzer Christian)
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Nagyagite
Sacarîmb ( Nagyág), Deva, Hunedoara Co., Romania
Up to 1 cm crystal cluster
Very rare "rose" of Nagyagite, associated with Rhodochrosite and Quartz, from old collection. (Author: Simone Citon)
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Nagyagite
Sacarîmb (Nagyág), Deva, Hunedoara Co., Romania
6x5x3 cm
Large sheets of Nagyagite in Rhodochrosite matrix, from old collection. (Author: Simone Citon)
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Nagyagite, Rhodochrosite
Sacarîmb (ex Nagyág), Deva, Hunedoara Co., Romania
7x6x4 cm
Exclusive, very rare and uncommon sample, with many complete, large (up to 2 cm ) Nagyagite crystals preserved by the encrusting Rhodochrosite and Quartz.
Usually large crystals of Nagyagite are broken, because it is very tender and fragile. From very old collection (late 1700-first 1800). (Author: Simone Citon)
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Naica Anidrite Chihuahua Mexico. size 11cm (Author: javmex2)
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Naica Chihuahua Mexico.
This piece is a group of calcite of 7.5 cm with spinel twinned fluorite crystals of 1cm some smaller and others larger, the largest measuring 1.5cm
Year:2007 (Author: javmex2)
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Naica fluorite.jpg (Author: Tracy)
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Mina Naica, Naica, Municipio Saucillo, Chihuahua, México
15 cm (Autor: Peter Megaw) -
Naica octahedron 10 cm on an axis (Author: Peter Megaw)
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Naica spinel twinned fluorite...with large enhydro. 8 cm across (Author: Peter Megaw)
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Naica trap mod.jpg (Author: Peter Megaw)
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naicfluo_angle90.jpg (Author: Tobi)
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Nakauriite
Lobminggraben, St Stefan ob Leoben, Leoben, Estiria/Steiermark, Austria
2,5 x 1,5 cm (Autor: Volkmar Stingl) -
Nambulite, Gypsum
Kombat Mine, Kombat, Grootfontein District, Otjozondjupa Region, Namibia
1.0 x 1.0 x 0.7 cm
ex Chris Stefano
Partial tabular pink-red translucent crystal of nambulite on gypsum. (Author: Don Lum)
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Nambulite, Gypsum
Kombat Mine, Kombat, Grootfontein District, Otjozondjupa Region, Namibia
1.0 x 1.0 x 0.7 cm
ex Chris Stefano
Partial tabular pink-red translucent crystal of nambulite on gypsum. (Author: Don Lum)
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Nambulite, Gypsum
Kombat Mine, Kombat, Grootfontein District, Otjozondjupa Region, Namibia
1.0 x 1.0 x 0.7 cm
ex Chris Stefano
Partial tabular pink-red translucent crystal of nambulite on gypsum. (Author: Don Lum)
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Nambulite
Mina Kombat, Kombat, Distrito Grootfontein, Región Otjozondjupa, Namibia
57mm x 34mm x 24mm (Autor: Don Lum) -
Nambulite
Mina Kombat, Kombat, Distrito Grootfontein, Región Otjozondjupa, Namibia
57mm x 34mm x 24mm (Autor: Don Lum) -
Nambulite
Mina Kombat, Kombat, Distrito Grootfontein, Región Otjozondjupa, Namibia
57mm x 34mm x 24mm (Autor: Don Lum) -
Nambulite
Mina Kombat, Kombat, Distrito Grootfontein, Región Otjozondjupa, Namibia
57mm x 34mm x 24mm (Autor: Don Lum) -
Nambulite
Mina Kombat, Kombat, Distrito Grootfontein, Región Otjozondjupa, Namibia
57mm x 34mm x 24mm (Autor: Don Lum) -
Nambulite
Mina Kombat, Kombat, Distrito Grootfontein, Región Otjozondjupa, Namibia
57mm x 34mm x 24mm (Autor: Don Lum) -
Nambulite
Mina Kombat, Kombat, Distrito Grootfontein, Región Otjozondjupa, Namibia
57 mm x 34 mm x 24 mm (Autor: Don Lum) -
Namibia.jpg (Author: Tobi)
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Namibia.JPG (Author: Tobi)
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Narsarsukite
Island of Igdlutalik, Narsaq, South Greenland
FoV: 2,5 x 2 cm
GENERAL info about the mineral:
* Narsarsukite is a titanium containing chain silicate known currently from around 20 alkaline localities worldwide.
* General formula is Na2(Ti,Fe)Si4O11 - may contain F and OH
* Tetragonal crystal forms, mostly plates
* NOTE: Neptunite has almost identical formula but different crystal structure; it has monoclinic crystals.
* The type locality is Narsarsuk (xxx complex) from where the mineral was described by the Swedish mineralogist Flink in 19O1.
My previous photo of Narsarsukite from Ilímaussaq show a more typical aspect of the mineral, i.e. yellow plates.
The following is information about the PARTICULAR Igdlutalik Narsarsukite on this photo (source in the end):
The SITE :
* Igdlutalik is NOT inside, rather 12 km west of the Ilimaussaq complex. (and 45 km west of the type locality Narsarsuk)
* Narsarsukite occurs at the island within a dyke of peralkaline trachyte.
* The dyke was found during the 1 : 2o ooo reconnaissance mapping of the Julianehaab area by the Greenland Geological Survey.
* It is some 20 m wide and the outcrop can be traced not more than 50 m along the length of the dyke.
The CRYSTALS of Igdlutalik Narsarsukite:
* Short prisms (around twice as long as they are broad) unlike most narsarsukite from other locations that have tabular habits.
* Forms {1oo} and {oo1} are dominant
* The unique GREEN color here is probably due to aegirine inclusions. (the mineral itself is normally yellow)
COMPOSITION - particularities:
* The Igdlutalik narsarsukite has a distinctly high Ti/Fe ratio compared with those from Ilimaussaq and Narssarssuk; in this respect it most closely resembles the Sweet Grass, Montana narsarsukites (Stewart, 1959).
* Niobium is a significant minor component
FORMATION:
* All known occurrences of narsarsukite are in silica-oversaturated environments in close association with alkaline intrusive rocks that have crystallized at relative low pressures.
* Stewart (1959) pointed out that the requisite conditions for narsarsukite growth may be obtained where emanations from alkaline magmas react with siliceous wallrocks.
* Growth of narsarsukite, according to Stewart (I959), requires an excess of silica, high partial pressure of oxygen, and all abundance of Ti and Na. Stewart considered that at lower oxygen pressure neptunite, Na2FeTiSi4O12, would be generated. However, Rajasekaran (I966) demonstrated the apparently stable coexistence of narsarsukite and neptunite at St. Hilalre, Quebec.
SOURCE OF INFORMATION - most of the above is directly extracted from:
UPTON et. al. : Narsarsukite - a new occurrence in peralkaline trachyte, south Greenland
Mineralogical Magazine, Sept 1976, Vol. 40 PP. 737-46
www.minersoc.org/pages/Archive-MM/Volume_40/40-315-737.pdf
(giving all the references I have left in the above extracts)
on Mindat:
* Igdlutalik, the locality : http://www.mindat.org/loc-23311.html (by the way it is the type locality for Emeleusite)
* Narsarsukite crystals from the same dyke http://www.mindat.org/locentry-156911.html (Author: kakov)
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Narsarsukite
Poudrette quarry (Demix quarry; Uni-Mix quarry; Desourdy quarry; Carrière Mont Saint-Hilaire), Mont Saint-Hilaire, Rouville RCM, Montérégie, Québec, Canada
FOV=5mm (Author: Doug)
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Narsarsukite, Manganoan Pectolite (black)
Kangerdluarsuk, Ilímaussaq Intrusive Complex, Narsaq, Greenland
FoV: 2,5 x 2 cm
GENERAL about the mineral:
* Narsarsukite is a titanium containing chain silicate known currently from around 20 alkaline localities worldwide.
* General formula is Na2(Ti,Fe)Si4O11 - may contain F and OH
* Tetragonal, seen mostly as tabular crystals, parallel to {oo1}.
* NOTE: Neptunite has almost identical formula but different crystal structure; it has monoclinic crystals.
* usually the color is YELLOW
* The type locality is the Narsarsuk pegmatite from where the mineral was described by the Swedish mineralogist Flink in 19O1.
Ilímaussaq Narsarsukite:
* First described from the Ilímaussaq complex by the Russian mineralogist Semenov in 1969
* Occurs in a quartz-bearing contact zone between naujaite and alkaline granite
* This environment is in accordance with:
* "Requisite conditions for narsarsukite growth may be obtained where emanations from alkaline magmas react with siliceous wallrocks" (Stewart (1959), quoted in UPTON et. al. 1977)
* The piece on this photo is from Kangerdluarsuk; where we are near the southern border of the Complex.
Turkestanite:
There are brown prisms (not very much darker than the narsarsukite) in the piece that is turkestanite (pointed out by a trustworthy source who had the piece in his hands). Not very well visible on this view, but there is the squared cross section of a crystal approx in the middle, above the left corner of the long narsarsukite plate. Other day I will try take and load close ups where it is better seen.
* "Ilimaussaq turkestanite forms up to a few millimeter large, brown or brownish-orange, idiomorphic, simple prismatic crystals; associated minerals are microcline, albite, augite, aegirine, quartz eudialyte and narsarsukite." (PETERSEN et.al 1999)
refs:
* STEWART 1959. Narsarsukite from Sage Creek, Sweet Grass Hills, Montana. Amer. Min. 44, 265-73.
(as quoted in: UPTON et. al. : Narsarsukite - a new occurrence in peralkaline trachyte, south Greenland - Mineralogical Magazine, Sept 1976, Vol. 40 PP. 737-46 www.minersoc.org/pages/Archive-MM/Volume_40/40-315-737.pdf)
* PETERSEN et.al: Turkestanite from the Ilímaussaq alkaline complex, South Greenland
Neues Jarhrbuch für Mineralogie - Monatshefte, issue: 9, 1999, pp: 424 - 432
(I did not manage to get the entire article, above sentence is quoted from the abstract) (Author: kakov)
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Natanite and rhodochrisite
Main Silicate Orebody, Potosi Mine, Santa Eulalia, Chihuahua, Mexico
FOV 1 cm
Cluster of 2 mm yellow-orange natanite crystals with rhodochrosite (Author: Peter Megaw)
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Native Bismuth
Keeley-Frontier Mine, Silver Centre, Ontario, Canada
16.5x12x1.5 cm
A cut and polished slab of gabbro showing native bismuth filling joint fractures. (Author: Joseph D'Oliveira)
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Native Copper (dodecahedral and wire copper)
Mina Osceola, Osceola, Condado Houghton, Michigan, USA
97 mm x 52 mm (Autor: Don Lum)Native Copper (dodecahedral and wire copper)
Mina Osceola, Osceola, Condado Houghton -
Native Copper (Spinel Twin, Cubic Crystals)
Mina Phoenix, Phoenix, Condado Keweenaw, Michigan, USA
22 mm x 18 mm (Autor: Don Lum)Native Copper (Spinel Twin, Cubic Crystals)
Mina Phoenix, Phoenix, Condado Keweenaw, -
Native Copper (variety spinel twin)
Mina Rocklands, Cloncurry, Distrito Cloncurry, Queensland, Australia
43 mm x 27 mm x 12 mm (Autor: Don Lum)Native Copper (variety spinel twin)
Mina Rocklands, Cloncurry, Distrito Cloncurry, Queensland, Aus -
Native Copper Crystals
Copper Creek Mine, Batchawana Bay, Sault Ste Marie, Ontario, Canada
7x5x3.5 cm (Author: Joseph D'Oliveira)
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Native Copper with Cuprite. Red Dome Mine, Chillagoe, Herberton District, Queensland, Australia. 10 x 8 x 6 cm. (Author: Samuel)
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Native Copper, Burra Burra Mine, Burra, Mt Lofty Ranges, South Australia, Australia.9 x 7 x 6 cm (Author: Samuel)
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Native Copper, Red Dome Mine, Chillagoe, Herberton District, Queensland, Australia. 10 x 5 x 2 cm. (Author: Samuel)
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Native Copper. Red Dome Mine, Chillagoe, Herberton District, Queensland, Australia. 6 x 4 x 4 cm. (Author: Samuel)
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Native Copper. Red Dome Mine, Chillagoe, Herberton District, Queensland, Australia. 6 x 4 x 4 cm. (Author: Samuel)
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Native Copper
Mina Milpillas, Cuitaca, Municipio Santa Cruz, Sonora, México
10 cm x 5 cm x 2 cm (Autor: silvia) -
Native Copper
Mina Milpillas, Cuitaca, Municipio Santa Cruz, Sonora, México
10 cm x 5 cm x 2 cm (Autor: silvia) -
Native Copper
Minas Ray, Zona Scott Mountain, Distrito Mineral Creek, Montes Dripping Spring, Condado Pinal, Arizona, USA
32 mm x 20 mm (Autor: Don Lum) -
Native Copper
Minas Ray, Zona Scott Mountain, Distrito Mineral Creek, Montes Dripping Spring, Condado Pinal, Arizona, USA
71 mm x 17 mm (Autor: Don Lum) -
Native Copper
Mina White Pine, White Pine, Condado Ontonagon, Michigan, USA
56 mm x 12 mm (Autor: Don Lum) -
Native Gold, Sphalerite, Quartz
Mina Timmins, Bristol, zona Timmins, Distrito Cochrane, Ontario, Canadá
26 mm x 15 mm x 15 mm (Autor: Don Lum) -
Native Gold
Mina Mockingbird, Zona Colorado, Distrito Whitlock, Mother Lode Belt, Condado Mariposa, California, USA
30 mm x 21 mm (Autor: Don Lum) -
Native Gold
Santa Elena de Uairén, Gran Sabana, Estado Bolívar, Venezuela
23 mm x 13 mm (Autor: Don Lum)
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