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Metallic breithauptite inclusions with grey skutterudite in calcite matrix from the type locality, Samson mine near St. Andreasberg, Harz, Lower Saxony. Picture width: 5 mm. (Author: Andreas Gerstenberg)
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Metarossite
Mina Little Eva, Yellow Cat Mesa, Distrito Thompsons (S. E. Thompsons), Condado Grand, Utah, USA
FOV = 4.0 mm (Autor: Doug) -
Metastibnite on Stibnite
Mina Pereta, Pereta, Magliano in Toscana, Provincia Grosseto, Toscana, Italia
12 x 5 cm (Autor: Sante Celiberti) -
Metastibnite, Quartz
Mina Pereta, Pereta, Magliano in Toscana, Provincia Grosseto, Toscana, Italia
80 x 70 mm (Autor: Sante Celiberti) -
Metastibnite
Steamboat Hot Springs, Steamboat, Distrito Steamboat Springs, Condado Washoe, Nevada, USA
FOV = 3.4 mm (Autor: Doug) -
Metastibnite
Mina Pereta, Pereta, Magliano in Toscana, Provincia Grosseto, Toscana, Italia
202 x 5,6 mm (Autor: Sante Celiberti) -
Metastibnite
Mina Pereta, Pereta, Magliano in Toscana, Provincia Grosseto, Toscana, Italia
21 x 1,5 cm (Autor: Sante Celiberti) -
Metatorbernite
Musonoi Extension, Kolwezi, Katanga Prov., DR Congo
5.0 x 9.0 cm
Emerald-green bladed crystals of metatorbernite covering a gray matrix. (Author: crosstimber)
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Metatorbernite and Soddyite
Mina Musonoi, Kolwezi, Distrito Kolwezi, Lualaba, Cinturón de cobre de Katanga, Katanga (Shaba), República Democrática del Congo (Zaire)
fov 6.0 mm (Autor: ploum) -
Metatorbernite
Mina Senhora da Assunção, Aldeia Nova, Ferreira de Aves, Sátão, Distrito Viseu, Portugal
FOV 5 mm (Autor: Cesar M. Salvan) -
Metatorbernite
Mina Musonoi, Kolwezi, Distrito Kolwezi, Lualaba, Cinturón de cobre de Katanga, Katanga (Shaba), República Democrática del Congo (Zaire)
fov 3.0 mm (Autor: ploum) -
Metatorbernite
Mina Margabal, Entraygues-sur-Truyère, Lot et Truyère, Rodez, Aveyron, Occitanie, Francia
1.8 x 1.8 cm (Autor: crosstimber) -
Metatorbernite
Mina Musonoi, Kolwezi, Distrito Kolwezi, Lualaba, Cinturón de cobre de Katanga, Katanga (Shaba), República Democrática del Congo (Zaire)
fov 4.0 mm (Autor: ploum) -
Metatorbernite
Calo, Vimianzo, Comarca Terra de Soneira, La Coruña / A Coruña, Galicia / Galiza, España
2.8 x 3.0 x 5.0 cm. (Autor: Michael Shaw) -
Metatyuyamunite
Mina Monument No. 2, Monument Valley, Reserva Indios Navajo, Condado Apache, Arizona, USA
FOV = 1.7 mm (Autor: Doug) -
Metatyuyamunite
Mina Monument No. 2, Monument Valley, Reserva Indios Navajo, Condado Apache, Arizona, USA
FOV = 3.5 mm (Autor: Doug) -
Metavariscite
Concesión Utahlite, Utahlite Hill, Lucin, Distrito Lucin, Pilot Range, Utah, USA
fov 3 mm (Autor: ploum) -
Metavariscite
Concesión Utahlite, Utahlite Hill, Lucin, Distrito Lucin, Pilot Range, Utah, USA
fov 2.2 mm (Autor: ploum) -
Metazeunerite Xls on Creedite Xls
Guizhou, China
Specimen: William Pinch Collection
Photo: Jeff Scovil & The RRUFF Project (Author: Jordi Fabre)
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Metazeunerite Xls on Creedite Xls
Guizhou, China
Specimen: William Pinch Collection
Photo: Jeff Scovil & The RRUFF Project (Author: Pinch Bill)
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Meurigite-K
Mina Silver Coin, Valmy, Distrito Iron Point, Condado Humboldt, Nevada, USA
FOV = 1.2 mm (Autor: Doug) -
Meurigite-K
Mina Chino, Santa Rita, Distrito Santa Rita, Condado Grant, New Mexico, USA
FOV = 2.0 mm (Autor: Doug) -
Mexiko.JPG (Author: Tobi)
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Meyerhofferite
Mt. Blanco Mine, Death Valley, Furnace Creek District, Inyo Co., California
5.1 x 6.0 cm.
Colorless lathlike crystals of a somewhat rare borate from the type locality for the species. (Author: crosstimber)
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Meyerhofferite
Bigadiç, Provincia Balıkesir, Región Marmara, Turquía
13,5 x 10,5 cm (Autor: Sante Celiberti) -
Meyerhofferite
Bigadiç, Provincia Balıkesir, Región Marmara, Turquía
13,5 x 10,5 cm (Autor: Sante Celiberti) -
Miargyrite
Hecla Rosebud Mine, Rosebud District, Sulphur, Pershing County, Nevada, USA
10.0 x 9.1 x 4.0 cm (Author: GneissWare)
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Miargyrite
San Jose mine, San Jose del Progreso, Oaxaca, Mexico
FOV 1 cm. (Author: Cesar M. Salvan)
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Miargyrite
Túnel Silver, Finca Van Silver, Arroyo Brandywine, Vancouver Mining Division, Isla de Vancouver, Columbia Británica, Canadá
FOV = 1.3 mm (Autor: Doug) -
Miargyrite
Mina Casualidad, Cordillera de los Picachos, Baños de Sierra Alhamilla, Pechina, Comarca Metropolitana de Almería, Almería, Andalucía, España
FOV 6,5 mm (Autor: Rewitzer Christian) -
Mica
Oh Saung Taung, Le-Oo (Le U), W of Mogok, Burma.
23 mm crystals in 5 cm calcite matrix.
Green mica. (Author: Ru Smith)
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Mica var Biotite
Bear Lake Diggings, Gooderham, Haliburton County, Ontario, Canada
8.7 x 8.0 cm (Author: Don Lum)
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Mica.
Bin Yee Htweet Mine, E of Mogok, Burma.
9 mm (Author: Ru Smith)
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Mica. (Author: Pierre Joubert)
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Mica
Kameoka, Prefectura Kyoto, Región Kinki, Isla Honshu, Japón
5.5 x 3.7 cm (Autor: am mizunaka) -
Micheelsenite
Cantera Poudrette, Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canadá
FOV = 2.0 mm (Autor: Doug) -
Michells Pass, about 2 km from Ceres. (Author: Pierre Joubert)
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Microcline
Isle of Arran, Scotland, UK
50mm x 21mm x 18mm crystal
Same specimen as above (Author: Mike Wood)
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Microcline
Isle of Arran, Scotland, UK
50mm x 21mm x 18mm crystal
Microcline feldspar crystal free-standing on a small piece of matrix. Self-collected. (Author: Mike Wood)
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Microcline
Isle of Arran, Scotland, UK
73mm x 20mm x17mm
Same specimen as above (Author: Mike Wood)
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Microcline
Isle of Arran, Scotland, UK
73mm x 20mm x17mm
A more elongated, single crystal (Author: Mike Wood)
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Microcline
Isle of Arran, Scotland, UK
50mm x 40mm x 32mm
Same specimen as above (Author: Mike Wood)
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Microcline
Isle of Arran, Scotland, UK
50mm x 40mm x 32mm
Same specimen as above (Author: Mike Wood)
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Microcline
Isle of Arran, Scotland, UK
50mm x 40mm x 32mm
Two intergrown microcline crystals with a small remnant of smoky quartz near the base.
Self-collected. (Author: Mike Wood)
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Microcline
Isle of Arran, Scotland, UK
61mm x 50mm x 48mm
Same specimen as above (Author: Mike Wood)
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Microcline
Isle of Arran, Scotland, UK
61mm x 50mm x 48mm
Another, smaller microcline feldspar specimen from the same cavity, consisting mainly of one large single twinned curved crystal ! (Author: Mike Wood)
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Microcline
Isle of Arran, Scotland, UK
105mm x 90mm x 55mm
Side view of same specimen as above (Author: Mike Wood)
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Microcline
Isle of Arran, Scotland, UK
105mm x 90mm x 55mm
Same specimen as above (Author: Mike Wood)
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Microcline
Isle of Arran, Scotland, UK
105mm x 90mm x 55mm
Large group of curved aggregates of creamy-white microcline crystals. Self-collected. (Author: Mike Wood)
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Microcline
Isle of Arran, Scotland, UK
78mm x 31mm x 26mm
Same specimen as above showing termination detail (Author: Mike Wood)
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Microcline
Isle of Arran, Scotland, UK
78mm x 31mm x 26mm
Same specimen as above (Author: Mike Wood)
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Microcline
Isle of Arran, Scotland, UK
78mm x 31mm x 26mm
Rather large microcline crystal with odd termination. Self-collected. (Author: Mike Wood)
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Microcline
Mas Ceber (Massabé) – Sils - La Selva – Girona – Catalonia - Spain
9x6,5 cm.
Main crystal: 3,2 cm (Author: DAni)
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Microcline
Mas Ceber (Massabé) – Sils - La Selva – Girona – Catalonia - Spain
8,8x7,5 cm.
Main crystal; 6,4 cm. (Author: DAni)
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Microcline
Papachacra Mts., Belen Dept., Catamarca Prov., Argentina
3.0 x 3.3 cm.
A single cream-colored twinned microcline crystal sitting atop smaller microcline crystals. (Author: crosstimber)
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Microcline
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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Microcline
Raikot, Chilas Diamer District, Gilgit-Baltistan, Pakistan
3.6 x 8.0 cm.
Porcelain white Baveno-twinned microcline crystal with numerous smaller crystals along one prism face. (Author: crosstimber)
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Microcline
Zone A - Montseny Massif - Girona - Catalonia - Spain
70 x 48 x 30 mm
(Author: Joan Martinez Bruguera)
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Microcline
Zone A - Montseny Massif - Girona - Catalonia - Spain
65 x 45 x 38 mm (Author: Joan Martinez Bruguera)
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Microcline ( var. Amazonite ) with Albite
Confetti Pocket, Smoky Hawk Mine, Buckner Pegmatite, Florissant, Teller Co., Colorado, USA
143 x 107 x 70 mm overall
Largest crystal is 70 mm long. (Author: GneissWare)
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Microcline ( var. Amazonite ) with Quartz (v. Smoky) and Hematite
Blue Marble Pocket, Smoky Hawk Mine, Buckner Pegmatite, Florissant, Teller Co., Colorado, USA
87 x 82 x 82 mm overall
A pair of dark smoky Quartz crystals to 53 x 25 mm are perched on blocky blue-green Amazonite to 35 x 27 mm with sharp, white stripes. Hematite pseudomorphs are perched on the Quartz points. From Joe Dorris’ claim. (Author: GneissWare)
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Microcline (Feldspar Group)
Zona mina Little Three, Ramona, Distrito Ramona, Condado San Diego, California, USA
~10 x 11 x 5 cm (Autor: Bergur_E_Sigurdarson) -
Microcline (v. Amazonite) -- cleaned
Lake George area, Park County, Colorado, USA
130 x 124 x 104 mm
Classic, old-time Colorado Amazonite with sharp, light greenish-blue, blocky crystals of Microcline, on a matrix of white Albite (v. Cleavlandite). The Amazonites are well formed and fully terminated, several of which are well-developed twins. One crystal has a "slot" where it once enclosed a blade of what was likely Cleavlandite. This is an old AE Foote specimen, and was later sold by Filer’s (Redlands, CA) and the Bradleys (Los Angeles). Formerly in the Don Boydston and Joel D. Cohen collections. It is complete on all sides, unrepaired and has no damage. (Author: GneissWare)
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Microcline (v. Amazonite) -- before cleaning
Lake George area, Park County, Colorado, USA
130 x 124 x 104 mm
Classic, old-time Colorado Amazonite with sharp, light greenish-blue, blocky crystals of Microcline, on a matrix of white Albite (v. Cleavlandite). The Amazonites are well formed and fully terminated, several of which are well-developed twins. One crystal has a "slot" where it once enclosed a blade of what was likely Cleavlandite. This is an old AE Foote specimen, and was later sold by Filer’s (Redlands, CA) and the Bradleys (Los Angeles). Formerly in the Don Boydston and Joel D. Cohen collections. It is complete on all sides, unrepaired and has no damage. (Author: GneissWare)
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Microcline (v. Amazonite) -- cleaned
Lake George area, Park County, Colorado, USA
130 x 124 x 104 mm
Classic, old-time Colorado Amazonite with sharp, light greenish-blue, blocky crystals of Microcline, on a matrix of white Albite (v. Cleavlandite). The Amazonites are well formed and fully terminated, several of which are well-developed twins. One crystal has a "slot" where it once enclosed a blade of what was likely Cleavlandite. This is an old AE Foote specimen, and was later sold by Filer’s (Redlands, CA) and the Bradleys (Los Angeles). Formerly in the Don Boydston and Joel D. Cohen collections. It is complete on all sides, unrepaired and has no damage. (Author: GneissWare)
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Microcline (var. amazonite) and Muscovite
Plutón Kern Knob , Lone Pine, Montes Inyo (Sierra Inyo), Condado Inyo, California, USA
233 x 203 x 83 mm (Autor: GneissWare) -
Microcline (var. amazonite) and Muscovite
Plutón Kern Knob , Lone Pine, Montes Inyo (Sierra Inyo), Condado Inyo, California, USA
233 x 203 x 83 mm (Autor: GneissWare) -
Microcline (var. amazonite)
Zona Crystal Peak, Condado Teller, Colorado, USA
5.3 x 4.5 x 5.3 cm (Autor: JMiguelE) -
Microcline (variety amazonite) and Quartz (variety smoky)
Lago George, Condado Park, Colorado, USA
fov 60 mm (Autor: ploum)Microcline (variety amazonite) and Quartz (variety smoky)
Lago George, -
Microcline (variety amazonite) and Quartz (variety smoky)
Lago George, Condado Park, Colorado, USA
fov 60 mm (Autor: ploum)Microcline (variety amazonite) and Quartz (variety smoky)
Lago George, -
Microcline (variety amazonite) Manebach Twin, Albite
Zona Florissant, Condado Teller, Colorado, USA
39 mm x 30 mm x 28 mm (Autor: Don Lum)Microcline (variety amazonite) Manebach Twin, Albite
Zona Florissant, Condad -
Microcline (variety Amazonite) with smoky Quartz
Colorado, USA
From the Dorris family, an unrepaired smoky and amazonite. (Author: Gail)
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Microcline (variety amazonite), Albite
Zona Konso, Distrito Konso, Provincia Sidamo, Región Naciones, Nacionalidades y Pueblos del Sur, Etiopía
111mm x 84mm x 39mm (Autor: Don Lum) -
Microcline (variety amazonite), Quartz (variety smoky)
Lago George, Condado Park, Colorado, USA
4 x 4 cm (Autor: Volkmar Stingl)Microcline (variety amazonite), Quartz (variety smoky)
Lago George, Co -
Microcline (variety amazonite), Quartz (variety smoky)
Lago George, Condado Park, Colorado, USA
4 x 4 cm (Autor: Volkmar Stingl)Microcline (variety amazonite), Quartz (variety smoky)
Lago George, Co -
Microcline (variety amazonite)
Concesión Smoky Hawk, Zona Crystal Peak, Condado Teller, Colorado, USA
2.0 x 2.7 cm (Autor: crosstimber)Microcline (variety amazonite)
Concesión Smoky Hawk, Zona Crystal Peak, Condado Teller, Colorado, US -
Microcline (variety amazonite)
Pikes Peak, Condado Teller, Colorado, USA
58 X 40 mm (Autor: Manuel Mesa)Microcline (variety amazonite)
Pikes Peak, Condado Teller, Colorado, US -
Microcline (variety amazonite)
Zona Crystal Peak, Condado Teller, Colorado, USA
1.6 x 2.2 cm (Autor: crosstimber)Microcline (variety amazonite)
Zona Crystal Peak, Condado Teller, Colorado, US -
Microcline and Albite
Moat Mountain, Hale, Condado Carroll, New Hampshire, USA
4.2 x 4.4 cm (Autor: crosstimber) -
Microcline and Fluorapatite
Zona Imilchil, Anti-Atlas, Provincia Er Rachidia, Región Drâa-Tafilalet, Marruecos
10 cm. x 14 cm. (Autor: Enrique Llorens) -
Microcline and Quartz
Belvís de Monroy, Comarca Campo Arañuelo, Cáceres, Extremadura, España
7 x 5 x 4 cm. (Autor: ApitaAngel) -
Microcline and Quartz
Belvís de Monroy, Comarca Campo Arañuelo, Cáceres, Extremadura, España
7 x 5 x 4 cm. (Autor: ApitaAngel) -
Microcline var amazonite, Quartz var smoky
Bear Creek,, El Paso County, Colorado, USA
9 x 8.7 cm. (Author: Don Lum)
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Microcline var amazonite, Quartz var smoky
Bear Creek,, El Paso County, Colorado, USA
9 x 8.7 cm (Author: Don Lum)
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Microcline var. amazonite
Tree Root Pocket, Two Point Claim, Teller Co., Colorado
4.2 x 5.4 cm. (Author: crosstimber)
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Microcline var. amazonite with Albite var. cleavelandite
Concesión Smoky Hawk, Zona Crystal Peak, Condado Teller, Colorado, USA
6.1 cm x 7.5 cm (Autor: Michael Shaw)Microcline var. amazonite with Albite var. cleavelandite
Concesión Smoky Hawk, Zona Crystal Peak, Co -
Microcline var. amazonite
Zona Crystal Peak, Condado Teller, Colorado, USA
3.0 x 6.0 cm (Autor: Linda Smith) -
Microcline with Albite (variety cleavelandite)
Pozo Government, Albany, Condado Carroll, New Hampshire, USA
2.5 x 3.8 x 7.1 cm (Autor: crosstimber)Microcline with Albite (variety cleavelandite)
Pozo Government, Albany, Condado Carroll, N -
Microcline with Albite and Quartz
Pedrera Mas Sever, Massabè (Mas Ceber), Sils, Comarca La Selva, Gerona / Girona, Cataluña / Catalunya, España
3.8 × 1.6 × 1.4 cm (Autor: Joan R.) -
Microcline with Beryl
Valle Shigar, Distrito Shigar, Gilgit-Baltistan (Áreas del Norte), Paquistán
118 X 84 mm (Autor: Manuel Mesa) -
Microcline with Quartz (variety smoky quartz)
Pedrera Mas Sever, Massabè (Mas Ceber), Sils, Comarca La Selva, Gerona / Girona, Cataluña / Catalunya, España
5 cm width. (Autor: Joan R.) -
Microcline with Quartz (variety smoky quartz)
Pedrera Mas Sever, Massabè (Mas Ceber), Sils, Comarca La Selva, Gerona / Girona, Cataluña / Catalunya, España
6 cm (Autor: marco campos-venuti) -
Microcline with Quartz and Muscovite
Yuno, Valle Shigar, Distrito Shigar, Gilgit-Baltistan (Áreas del Norte), Paquistán
140 x 75 mm (Autor: Manuel Mesa) -
Microcline with Quartz and Topaz
Valle Shigar, Distrito Shigar, Gilgit-Baltistan (Áreas del Norte), Paquistán
160 X 134 mm (Autor: Manuel Mesa) -
Microcline, Arfvedsonite
Monte Malosa, Distrito Zomba, Malawi
8.4 x 6.3 x 4.4 cm (Autor: Michael Shaw) -
Microcline, Florencite-(Ce)
Mina Rumi Tucu, formación Papachacra, granito El Portezuelo, Cerro León Muerto, Departamento Belén, Provincia Catamarca, Argentina
2.1 x 1.8 x 1.4 cm (Autor: Michael Shaw) -
Microcline, Hydroxylherderite
Belvís de Monroy, Comarca Campo Arañuelo, Cáceres, Extremadura, España
6 x 5 x 4 cm. (Autor: ApitaAngel) -
Microcline, Quartz, Fluorite
Hirukawa, Nakatsugawa, Prefectura Gifu, Región Chubu, Isla Honshu, Japón
6.9 x 4.8 cm (Autor: am mizunaka) -
Microcline, Quartz, Muscovite, Albite, 'Tourmaline'
Distrito Gilgit, Gilgit-Baltistan (Áreas del Norte), Paquistán
20 x 17 cm (Autor: Sante Celiberti)Microcline, Quartz, Muscovite, Albite, 'Tourmaline'
Distrito Gilgit, Gilgit-Baltistan (Áreas -
Microcline, Quartz, Topaz
Kleine Spitzkoppe, Zona Spitzkopje, Distrito Karibib, Región Erongo, Namibia
100x60x60mm (Autor: Heimo Hellwig) -
Microcline, Quartz, Topaz
Kleine Spitzkoppe, Zona Spitzkopje, Distrito Karibib, Región Erongo, Namibia
100x60x60mm (Autor: Heimo Hellwig) -
Microcline, Quartz, Topaz
Kleine Spitzkoppe, Zona Spitzkopje, Distrito Karibib, Región Erongo, Namibia
100x60x60mm (Autor: Heimo Hellwig) -
Microcline, Quartz
Pikes Peak, Condado El Paso, Colorado, USA
85 mm x 76 mm. Main microcline crystal: 22 mm. Mai (Autor: Carles Millan) -
Microcline, Quartz
La Sala, Viladrau, Comarca Osona, Gerona / Girona, Cataluña / Catalunya, España
65 mm x 56 mm. Largest crystal: 33 mm. Mass: 93 g. (Autor: Carles Millan) -
Microcline, Schorl
Valle Shigar, Distrito Shigar, Gilgit-Baltistan (Áreas del Norte), Paquistán
137 mm x 115 mm x 82 mm (Autor: Don Lum) -
Microcline, var. amazonite,
2.7 x 2.5 x 2.1 cm, ex-Tom Gressman (Author: Jim)
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Microcline
Belvís de Monroy, Comarca Campo Arañuelo, Cáceres, Extremadura, España
7 x 5 x 5 cm. (Autor: ApitaAngel) -
Microcline
Baveno, Lago Maggiore, Provincia Verbano-Cusio-Ossola, Piamonte (Piemonte), Italia
48 mm (Autor: Gerhard Brandstetter) -
Microcline
Valle Shigar, Distrito Shigar, Gilgit-Baltistan (Áreas del Norte), Paquistán
152 X 54 mm (Autor: Manuel Mesa) -
Microcline
Alchuri, Distrito Shigar, Gilgit-Baltistan (Áreas del Norte), Paquistán
155 x 90 mm (Autor: Manuel Mesa) -
Microcline
Shengus (Shingus), Distrito Roundu, Gilgit-Baltistan (Áreas del Norte), Paquistán
200 x 85 mm (Autor: Manuel Mesa) -
Microcline
Valle Shigar, Distrito Shigar, Gilgit-Baltistan (Áreas del Norte), Paquistán
147 X 48 mm (Autor: Manuel Mesa) -
Microcline
Distrito Skardu, Gilgit-Baltistan (Áreas del Norte), Paquistán
152 x 47 mm (Autor: Manuel Mesa) -
Microcline
Nyet-Bruk, Nyet, Valle Braldu, Distrito Shigar, Gilgit-Baltistan (Áreas del Norte), Paquistán
150 x 77 mm (Autor: Manuel Mesa) -
Microcline
Hirukawa, Nakatsugawa, Prefectura Gifu, Región Chubu, Isla Honshu, Japón
10 x 56 mm (Autor: Manuel Mesa) -
Microcline
Zona Crystal Peak, Condado Teller, Colorado, USA
110 x 84 mm (Autor: Manuel Mesa) -
Microcline
Valle Shigar, Distrito Shigar, Gilgit-Baltistan (Áreas del Norte), Paquistán
131 x 62 mm (Autor: Manuel Mesa) -
Microcline
Valle Shigar, Distrito Shigar, Gilgit-Baltistan (Áreas del Norte), Paquistán
180 x 52 mm (Autor: Manuel Mesa) -
Microcline
Valle Shigar, Distrito Shigar, Gilgit-Baltistan (Áreas del Norte), Paquistán
102 x 50 mm (Autor: Manuel Mesa) -
Microcline
Gualba de Dalt, Gualba, Comarca Vallès Oriental, Barcelona, Cataluña / Catalunya, España
60mm x 42mm x 36mm (Autor: Firmo Espinar) -
Microcline
Pedrera Mas Sever, Massabè (Mas Ceber), Sils, Comarca La Selva, Gerona / Girona, Cataluña / Catalunya, España
14mm x 30mm x 14mm (Autor: Firmo Espinar) -
Microcline
Concesión Sky Hawk, Crystal Peak, Lake George, Condado Teller, Colorado, USA
8.2 x 5.5 x 1.4 cm (Autor: Michael Shaw) -
Microcline
Cantera Leiper's, Leiperville, Condado Delaware, Pennsylvania, USA
7.2 x 3.2 x 2.2 cm (Autor: Michael Shaw) -
Microlite
Fisher Quarry, Topsham, Sagadahoc Co., Maine, USA
Largest crystal 1.5 cm (Author: Clifford Trebilcock)
-
Microlite on Mica (variety lepidolite)
Mina Xanda, Virgem da Lapa, Vale do Jequitinhonha, Minas Gerais, Brasil
pending (Autor: Gail)Microlite on Mica (variety lepidolite)
Mina Xanda, Virgem da Lapa, Vale do Jequitinhonha, Minas Gerai -
Micromounting in the old days: little box with label, dating from 1875. (Author: Andreas Gerstenberg)
-
Middle part with the 4th layer: Quartzes / rock crystals and many galena specimens. (Author: Tobi)
-
Miersite
Mina María Josefa, Rodalquilar, Níjar, Comarca Metropolitana de Almería, Almería, Andalucía, España
fov 1.2 mm (Autor: Rewitzer Christian) -
Miguelromeroite
Mina Veta Negra, Distrito Pampa Larga, Tierra Amarilla, Provincia Copiapó, Región Atacama, Chile
FOV of 2.39mm (Autor: ofarcis) -
Milarite from Cadalso de los Vidrios, Madrid, Spain.
Field of view: 1 mm (Author: Rewitzer Christian)
-
Milarite from Cadalso de los Vidrios, Madrid, Spain.
Field of view: 1.6 mm (Author: Rewitzer Christian)
-
Milarite on adularia
Valenciana Mine, Guanajuato, Mexico
4.5 x 5.7 x 8.8
Lustrous rhombic adularia crystals with small prismatic yellow milarite and and sparkly quartz crystals. (Author: crosstimber)
-
Milarite
Valle Aurina (Valle Ahrnbach), Provincia Bolzano, Trentino-Alto Adige (Trentino-Südtirol), Italia
18 mm (Autor: Gerhard Brandstetter) -
Milarite
Cantera Venero I (Cantera Cadalso I), Cadalso de los Vidrios, Comarca Sierra Oeste de Madrid, Comunidad de Madrid, España
FoV ca. 1,2 x 0,8 cm (Autor: Volkmar Stingl) -
Milarite
Cantera Venero I (Cantera Cadalso I), Cadalso de los Vidrios, Comarca Sierra Oeste de Madrid, Comunidad de Madrid, España
FoV ca. 1 x 0,7 cm (Autor: Volkmar Stingl) -
Milarite
Cantera Venero I (Cantera Cadalso I), Cadalso de los Vidrios, Comarca Sierra Oeste de Madrid, Comunidad de Madrid, España
FoV ca. 1,2 x 0,8 cm (Autor: Volkmar Stingl) -
Millerite
Albertine mine, Harzgerode, Harz mtns., Saxony-Anhalt, Germany
picture width: 8 mm (Author: Andreas Gerstenberg)
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Millerite
Ca’ dei Ladri (Silla), Gaggio Montano, Bologna Province, Emilia-Romagna, Italy
Very nice 2.17 mm group of Millerite tuft (Author: Matteo_Chinellato)
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Millerite
Ca’ dei Ladri (Silla), Gaggio Montano, Bologna Province, Emilia-Romagna, Italy
4.26 mm group of Millerite crystals (Author: Matteo_Chinellato)
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Millerite
Meikle Mine, Bootstrap District, Elko Co., Nevada, USA
3.4 x 4.0 cm (Author: am mizunaka)
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Millerite
Victoria mine, Littfeld, Siegerland, Rhineland-Palatinate, Germany.
3,8 x 2,6 cm (Author: Andreas Gerstenberg)
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Millerite and Siegenite. Eugènia Mine.
Specimen size: 4 x 3,5 x 3,5 cm.
Jordi Fabre Collection.
Fabre Minerals Photo. (Author: Joan Rosell)
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Millerite in and on Calcite.
Hockley Edge, Near Ashover, Derbyshire, England, UK.
FOV 20 x 17 mm approx (Author: nurbo)
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Millerite in and on Calcite.
Hockley Edge, Near Ashover, Derbyshire, England, UK.
FOV 25 x 25 mm approx (Author: nurbo)
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Millerite in and on Calcite.
Hockley Edge, Near Ashover, Derbyshire, England, UK.
FOV 30 x 25 mm approx (Author: nurbo)
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Millerite in and on Calcite.
Hockley Edge, Near Ashover, Derbyshire, England, UK.
FOV 20 x 20 mm approx (Author: nurbo)
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Millerite in and on Calcite.
Hockley Edge, Near Ashover, Derbyshire, England, UK.
80 x 60 x 50 mm (Author: nurbo)
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Millerite in Septarian Nodule
Coldberry Gutter, Middleton in Teesdale, Co Durham, England, UK.
vug containing Millerite is 7 mm on its longest dimension (Author: nurbo)
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Millerite in Septarian Nodule
Coldberry Gutter, Middleton in Teesdale, Co Durham, England, UK.
50 x 35 mm (Author: nurbo)
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Millerite, acicular with calcite crystals in limestone. Ex Dr. Marvin Rausch. (Author: Gail)
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Millerite, Chalcopyrite, Quartz (variety chalcedony)
Carretera U.S. Highway 27, Halls Gap, Condado Lincoln, Kentucky, USA
2,5 x 2 cm (Autor: Volkmar Stingl)Millerite, Chalcopyrite, Quartz (variety chalcedony)
Carretera U.S. Highway 27, Halls Gap, Condado -
Millerite, Chalcopyrite
Carretera U.S. Highway 27, Halls Gap, Condado Lincoln, Kentucky, USA
4,5 x 4 cm (Autor: Volkmar Stingl) -
Millerite, Mt Keith Nickel Mine, Mt Keith, Western Australia, Australia. 8 x 5 x 1 cm. (Author: Samuel)
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Millerite, siderite
Wölfermittel vein, 520 m adit, Wolf mine, Herdorf, Siegerland, Rhineland-Palatinate, Germany.
8,5 x 5,5 cm (Author: Andreas Gerstenberg)
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Millerite-"ball" (1,8 cm) on matrix from Pfannenberger Einigkeit mine, Salchendorf, Siegerland. (Author: Andreas Gerstenberg)
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Millerite
Carretera U.S. Highway 27, Halls Gap, Condado Lincoln, Kentucky, USA
4.5 x 6.0 cm (Autor: crosstimber) -
Millerite
Carretera U.S. Highway 27, Halls Gap, Condado Lincoln, Kentucky, USA
4.5 x 6.0 cm (Autor: crosstimber) -
Millerite
Carretera U.S. Highway 27, Halls Gap, Condado Lincoln, Kentucky, USA
42mm x 33mm x 32mm (Autor: Don Lum) -
Millerite
Carretera U.S. Highway 27, Halls Gap, Condado Lincoln, Kentucky, USA
42mm x 33mm x 32mm (Autor: Don Lum) -
Millerite
Mina Le Cetine di Cotorniano (Mina Le Cetine), Chiusdino, Provincia Siena, Toscana, Italia
FOV = 4.0 mm (Autor: Doug) -
Millerite
Mina Thompson (explotación a cielo abierto Thompson), Thompson, Región Winnipeg Capital, Manitoba, Canadá
5x2.5x1.5 cm (Autor: Joseph DOliveira) -
Millerite
Mina Thompson (explotación a cielo abierto Thompson), Thompson, Región Winnipeg Capital, Manitoba, Canadá
9x2x2 cm (Autor: Joseph DOliveira) -
Millerite
Zona Futa Pass, Firenzuola, Ciudad metropolitana de Florencia, Toscana, Italia
48 x 34 mm (Autor: Sante Celiberti) -
Millerite
Halls Gap, Condado Lincoln, Kentucky, USA
2 x 1 cm (Autor: Volkmar Stingl) -
Millerite
Halls Gap, Condado Lincoln, Kentucky, USA
2 x 1 cm (Autor: Volkmar Stingl) -
Cantera Milltown, Milltown, Ashover, Distrito North East Derbyshire, Derbyshire, Inglaterra / Reino Unido
NA (Autor: Forrestblyth) -
MILPILLAS MINE BY NIGHT AND BY DAY
These photographs capture groundbreaking moments at the Milpillas Solvent-Extraction and ElectroWinning plant, presenting both night and day perspectives. Prominently featured in the upper right section of the images are the crushed Copper ore leach pads and the associated ponds, which are notably rich in acid-leached Copper solution. The building at the top, the one closest to the heap leach pads is the electrowinning plant.
Commissioned in 2005, this advanced facility was the outcome of a significant partnership between Outokumpu Technology, a leader in metallurgical solutions, and Industrias Peñoles. Outokumpu’s extensive involvement ensured the plant, initially designed for 45,000 tons of high-purity Copper cathodes annually (with an expansion to 65,000 tons by 2008), would be a success for Compañía Minera La Parreña. Like its counterpart in Laos, Milpillas didn’t just become part of Mexican mining history; it also perfectly illustrated the significant technological shifts in Copper production at the turn of the millennium.
Unlike many mines that produce Copper concentrate, Milpillas produced high-purity Copper cathodes through a sophisticated process of underground mining, heap leaching, solvent extraction (SX), and electrowinning (EW). This integrated approach bypassed the need for smelting and refining elsewhere, streamlining the journey of Copper from its ore state to a commercially valuable product.
Original photos courtesy of Alanís Ortega (Author: silvia)
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MILPILLAS UNDERGROUND - STORAGE ZONE
The nature of the Milpillas mine’s underground drives and storage areas was intrinsically linked to its “cut-and-fill” mining method and the unique geological characteristics of the deposit. The mine’s infrastructure consisted of a network of drives (tunnels) excavated to access and extract the ore. These drives were carefully designed to follow the complex ore bodies, which included lenticular, flat-lying oxide zones at varying elevations, as well as deeper supergene sulphide zones. The underground layout facilitated the movement of equipment, personnel, and ore, as well as providing ventilation and drainage. To maintain ground stability in the created voids, waste material or cemented fill was introduced, creating a new working platform for the next mining cycle. This systematic approach allowed for selective extraction, maximizing recovery of the valuable Copper while ensuring operational safety and efficiency.
Storage areas underground are typically integrated into the mining cycle. After extraction, ore was crushed within the mine and then transported to surface leaching yards. Given the “cut-and-fill” method, excavated areas were often backfilled with waste material after ore removal, contributing to ground stability. While specific storage capacities for raw ore underground are not widely detailed, the efficient flow of material from extraction to surface processing implied a well-managed system for temporary holding and transport within the mine’s extensive network of tunnels. A significant challenge for underground operations at Milpillas was water management, as the mine historically faced issues with flooding due to groundwater infiltration. Efficient pumping systems were crucial to dewater the mine and ensure safe and continuous operations. Once the ore was extracted, it is brought to the surface for further processing.
Original photos courtesy of Max Lomelín (Author: silvia)
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Mina Milpillas, Cuitaca, Municipio Santa Cruz, Sonora, México
(Autor: silvia) -
Mimetie (var Campylite ?).
Dry Gyll Mine, Caldbeck Fells, Cumbria, England,UK.
19 x 16 mm (Author: nurbo)
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Mimetite
?
7.4 x 4.2 cm. (Author: am mizunaka)
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Mimetite
Badenweiler, Black Forest, Baden-Württemberg, Germany
Specimen width 70 mm (Author: Tobi)
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Mimetite
Chah Mileh mine, Anarak city, Esfahan province, Iran
Persian mimetite is some of the best in the world. This specimen consists of bright orange mimetite of the best color. All in all, this is a beautiful specimen of material that is very, very difficult to obtain. (Author: h.abbasi)
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Mimetite
Chah Mileh mine, Anarak city, Esfahan province, Iran
7 x 7 cm. (Author: pirirani)
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Mimetite
Chah Mileh mine, Anarak city, Esfahan province, Iran
3.7 x 3.5 cm. (Author: pirirani)
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Mimetite
Chah Mileh mine, Anarak city, Esfahan province, Iran
9 x 8 cm. (Author: pirirani)
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Mimetite
Chah mileh mine, Anarak city, Esfahan province, Iran
7.5 x 7.5 cm. (Author: pirirani)
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Mimetite
Chah Milleh Mine (Chah Mileh Mine; Tchah-Mille Mine), Chah Milleh (Chah-Mileh; Tchah-Mille), Anarak District, Nain County (Nayin County), Esfahan Province (Isfahan Province; Aspadana Province), Iran
Dimensions: 20 mm x 65mm
(Author: h.abbasi)
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Mimetite
Congreso-Leon Mine, San Pedro Corralitos, Chihuahua, Mexico
4.9 x 2.2 x 3.8 cm (Author: xdxucn)
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Mimetite
Haus Baden Mine, Badenweiler Pb mining District, Black Forest, Baden-Württemberg, Germany
FOV 40 mm
A nice vug with orange mimetite balls inside (Author: Tobi)
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Mimetite
Haus Baden Mine, Badenweiler Pb mining District, Black Forest, Baden-Württemberg, Germany
FOV 45 mm (Author: Tobi)
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Mimetite
Haus Baden Mine, Badenweiler Pb mining District, Black Forest, Baden-Württemberg, Germany
Specimen size 100 mm (Author: Tobi)
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Mimetite
Haus Baden Mine, Badenweiler Pb mining District, Black Forest, Baden-Württemberg, Germany
Specimen size 100 mm (Author: Tobi)
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Mimetite
Haus Baden Mine, Badenweiler Pb mining District, Black Forest, Baden-Württemberg, Germany
Specimen size 100 mm (Author: Tobi)
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Mimetite
Haus Baden Mine, Badenweiler, Black Forest, Baden-Württemberg, Germany
Field of view 3,5 cm (Author: Tobi)
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Mimetite
Haus Baden Mine, Sehringen, Badenweiler Pb mining District, Badenweiler, Black Forest, Baden-Württemberg, Germany
Specimen height 10 cm
(Author: Tobi)
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Mimetite
Haus Baden Mine, Sehringen, Badenweiler Pb mining District, Badenweiler, Black Forest, Baden-Württemberg, Germany
Specimen size 10 cm (Author: Tobi)
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Mimetite
Inglaterra Mine, Francisco Portillo, Mun. de Aquiles Serdán, Chihuahua, Mexico
4.5 x 7.5 cm,
Lustrous, orange-brown mimetites that remind me of cauliflower. There are also some small white calcite rhombs on the base of the specimen. (Author: crosstimber)
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Mimetite
Mas Dieu, Gard, France
fov 2 mm (Author: ploum)
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Mimetite
Mas Dieu, Gard, France
fov 5 mm (Author: ploum)
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Mimetite
Mas Dieu, Gard, France
fov 3 mm (Author: ploum)
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Mimetite
Mas Dieu, Gard, France
fov 2.5 mm (Author: ploum)
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Mimetite
Mas Dieu, Gard, France
fov 3.5 mm (Author: ploum)
-
Mimetite
Mas Dieu, Gard, France
fov 5.5 mm (Author: ploum)
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Mimetite
Mas Dieu, Gard, France
fov 25 mm (Author: ploum)
-
Mimetite
Mas Dieu, Gard, France
fov 20 mm (Author: ploum)
-
Mimetite
Mas Dieu, Gard, France
fov 8 mm (Author: ploum)
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Mimetite
Mas Dieu, Mercoirol, Gard, France
fov 3 mm (Author: ploum)
-
Mimetite
Mas Dieu, Mercoirol, Gard, France
fov 3 mm (Author: ploum)
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Mimetite
Mas Dieu, Mercoirol, Gard, France
fov 3 mm (Author: ploum)
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Mimetite
Mas Dieu, Mercoirol, Gard, France
fov 2.2 mm (Author: ploum)
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Mimetite
Minerales Shaft, West Camp, Mun. de Aquiles Serdan, Chihuahua, Mexico
6.4 x 7.9 cm (Author: crosstimber)
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Mimetite
Minerales Shaft, West Camp, Mun. de Aquiles Serdán, Chihuahua, Mexico
6.0 x 7.4 cm.
A limonitic matrix encrusted with mimetite crystals to 5 mm. The crystals have yellow bases, with an intermediate brown zone, and have mustard yellow pyramidal terminations. (Author: crosstimber)
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Mimetite
Ojuela Mine, Mapimi, Durango, Mexico
8.5 x 10.5 cm.
Groups of yellow-green crystals to 3.0 mm coating a gossan matrix with minor calcite and wulfenite. (Author: crosstimber)
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Mimetite
Ojuela Mine, Mapimi, Mun. de Mapimi, Durango, Mexico
7.8 x 6.8 cm (Author: Don Lum)
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Mimetite
Ojuela mine, mun de Mapimi, Durango, Mexico.
80 x 40 mm approx (Author: nurbo)
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Mimetite
Ojuela Mine, Municipio de Mapimí, Durango, Mexico.
FOV 15 mm across (Approx) (Author: nurbo)
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Mimetite
Pingtouling Mine, Guangdong Province, China
Specimen width 55 mm (Author: Tobi)
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Mimetite
Pingtouling Mine, Guangdong Province, China
FOV 20 mm (Author: Tobi)
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Mimetite
Pingtouling Mine, Liannan Co., Qingyuan Prefecture, Guangdong Province, China
Specimen size 5 cm (Author: Tobi)
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Mimetite
Pingtouling Mine, Qingyuan Prefecture, Guangdong Province, China
Specimen width 50 mm (Author: Tobi)
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Mimetite
Pintouling Mine, Sanjiang, Liannan Co., Guangdong Prov., China
2.1 x 2.2 cm.
Hexagonal prisms of yellow to orange mimetite with pinacoid terminations. These first reached the U.S. market in Jan. 2003. Unfortunately, specimens were collected for only a few months before the supply was exhausted. (Author: crosstimber)
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Mimetite
San Pedro Mine, San Luis Potosi, Mexico
App 8 cm across
Photo taken with BlackBerry. (Author: Jean Sendero)
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Mimetite
Santa Eulalia Mine, Chihuahua, Mexico
3.4 x 3.1 cm (Author: Don Lum)
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Mimetite
Santa Eulalia, Aquiles Serdán, Chihuahua, México
3 mm (Author: ploum)
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Mimetite
Tharsis, Alosno, Huelva, Andalusia, Spain
fov 2 mm
mined in 2011 (Author: Rewitzer Christian)
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Mimetite
Tharsis, Alosno, Huelva, Andalusia, Spain
fov 2 mm
mined in 2011 (Author: Rewitzer Christian)
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Mimetite
Tsumeb Mine, Tsumeb, Namibia
5.5 x 8.7 cm.
Spiky yellow mimetite crystals averaging 4-6 mm in length with bubbly white calcite, minor malachite and reddish iron oxide included calcite. (Author: crosstimber)
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Mimetite
Tsumeb Mine, Tsumeb, Namibia
5 cm (Author: laayla21506)
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Mimetite
Tsumeb Mine, Tsumeb, Namibia
5 cm (Author: laayla21506)
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Mimetite
Tsumeb Mine, Tsumeb, Namibia
5 cm (Author: laayla21506)
-
Mimetite
Tsumeb Mine, Tsumeb, Namibia
5 cm (Author: laayla21506)
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Mimetite
Tsumeb, Namibia
1 cm
Mimetite, double terminated crystal (Author: Herman van Dennebroek)
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Mimetite
Tsumeb, Namibia
44 x 42 x 32 mm
Same as above. (Author: Pierre Joubert)
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Mimetite
Tsumeb, Namibia
44 x 42 x 32 mm
Same as above. (Author: Pierre Joubert)
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Mimetite
Tsumeb, Namibia
44 x 42 x 32 mm (Author: Pierre Joubert)
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Mimetite (Campyllte) - Cerro de los Guardias, Rodalquilar, Almería, Spain.
Field of view:1.8 mm (Author: Rewitzer Christian)
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Mimetite (closeup of above specimen)
Ojuela Mine, Mapimi, Durango, Mexico
FOV = 6.0 cm. (Author: crosstimber)
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Mimetite (var Campylite)
Dry Gill, Caldbeck Fells, Cumbria, UK
5 x 4 x 2 cm (Author: nurbo)
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Mimetite (Var Campylite)
Dry ghyll, Caldbeck Fells, Lake District, Cumbria, England, UK.
FOV 40 x 30 mm Approx (Author: nurbo)
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Mimetite (Var Campylite)
Dry ghyll, Caldbeck Fells, Lake District, Cumbria, England, UK.
FOV 30 x 20 mm Approx (Author: nurbo)
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Mimetite (Var Campylite)
Dry ghyll, Caldbeck Fells, Lake District, Cumbria, England, UK.
30 x 20 mm Approx (Author: nurbo)
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Mimetite (Var Campylite)
Dry ghyll, Caldbeck Fells, Lake District, Cumbria, England, UK.
FOV 30 x 20 mm Approx (Author: nurbo)
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Mimetite (Var Campylite)
Dry ghyll, Caldbeck Fells, Lake District, Cumbria, England, UK.
160 x 110 mm (Author: nurbo)
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Mimetite (Var Campylite) on Baryte.
Dry Gill, Caldbeck Fells, Cumbria, England, UK.
Campylite to 4 mm (Author: nurbo)
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Mimetite (Var Campylite) on Baryte.
Dry Gill, Caldbeck Fells, Cumbria, England, UK.
Campylite to 4 mm (Author: nurbo)
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Mimetite (Var Campylite) on Baryte.
Dry Gill, Caldbeck Fells, Cumbria, England, UK.
Campylite to 4 mm (Author: nurbo)
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Mimetite (Var Campylite) on Baryte.
Dry Gill, Caldbeck Fells, Cumbria, England, UK.
35 x 30 mm (Author: nurbo)
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Mimetite (var. campylite)
Dry Gill Mine, Caldbeck Fells, Cumbria, England, UK
5.5 x 4.5 x 3.5cm
94g (Author: captaincaveman)
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Mimetite (variety campylite) with associated barite and zinc based crystals
Mina Dry Gill, Caldbeck Fells, Allerdale, (antes Cumberland), Cumbria, Inglaterra / Reino Unido
60mm matrix 5mm crystals (Autor: Forrestblyth) -
Mimetite (variety campylite) with associated barite and zinc based crystals
Mina Dry Gill, Caldbeck Fells, Allerdale, (antes Cumberland), Cumbria, Inglaterra / Reino Unido
60mm matrix 5mm crystals (Autor: Forrestblyth) -
Mimetite (variety campylite) with associated barite and zinc based crystals
Mina Dry Gill, Caldbeck Fells, Allerdale, (antes Cumberland), Cumbria, Inglaterra / Reino Unido
(Autor: Forrestblyth) -
Mimetite (variety campylite), Romanèchite
Mina Dry Gill, Caldbeck Fells, Allerdale, (antes Cumberland), Cumbria, Inglaterra / Reino Unido
56 x 38 mm (Autor: Sante Celiberti) -
Mimetite (variety campylite), Romanèchite
Mina Dry Gill, Caldbeck Fells, Allerdale, (antes Cumberland), Cumbria, Inglaterra / Reino Unido
56 x 38 mm (Autor: Sante Celiberti) -
Mimetite (variety Campylite)
Mina Dry Gill, Caldbeck Fells, Allerdale, (antes Cumberland), Cumbria, Inglaterra / Reino Unido
6 x 5 cm (Autor: Volkmar Stingl) -
Mimetite (variety campylite)
Mina Dry Gill, Caldbeck Fells, Allerdale, (antes Cumberland), Cumbria, Inglaterra / Reino Unido
60 mm matrix with 5 mm crystals (Autor: Forrestblyth) -
Mimetite (variety campylite)
Mina Dry Gill, Caldbeck Fells, Allerdale, (antes Cumberland), Cumbria, Inglaterra / Reino Unido
60 mm matrix with 5 mm crystals (Autor: Forrestblyth) -
Mimetite (variety campylite)
Mina Dry Gill, Caldbeck Fells, Allerdale, (antes Cumberland), Cumbria, Inglaterra / Reino Unido
60 mm matrix with 5 mm crystals (Autor: Forrestblyth) -
Mimetite (variety campylite)
Mina Dry Gill, Caldbeck Fells, Allerdale, (antes Cumberland), Cumbria, Inglaterra / Reino Unido
60 mm matrix with 5mm crystals (Autor: Forrestblyth) -
Mimetite (variety campylite)
Mina Dry Gill, Caldbeck Fells, Allerdale, (antes Cumberland), Cumbria, Inglaterra / Reino Unido
60 mm matrix with 5mm crystals (Autor: Forrestblyth)
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