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Galena : PbS | |
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Mogul Mine (Garryard), Silvermines District, Co. Tipperary, Ireland Group of cuboctahedral galena crystals about 2.5 cm in length. Photo and collection: Steve Stuart |
| © SMS 2005 | Photo ID: 38673 View Count: 344 |
Galena : PbS | |
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Ojuela Mine, Mapimí, Mun. de Mapimí, Durango, Mexico Very reflective galena cleavage. Photo is about 4.3 mm in length. Photo and specimen: Steve Stuart. |
| © SMS 2008 | Photo ID: 156698 View Count: 178 |
Galena : PbS, Dolomite : CaMg(CO3)2 | |
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Sweetwater Mine (Milliken Mine; Frank R. Milliken; Blair Creek; Ozark Lead Company Mine; Adair Creek; Logan Creek), Ellington, Viburnum Trend District, Reynolds Co., Missouri, USA Cuboctahedral galena crystal associated with dolomite rhombs. Photo is 2.5 mm in length. The dolomite fluoresces creamy-white under MW UV with short, dim phosphorescence. Specimen and photo: Steve Stuart. |
| © SMS 2006 | Photo ID: 53333 View Count: 231 |
Garnet Group : X3Z2(TO4)3 (X = Ca, Fe, etc·, Z = Al, Cr, etc·, T = Si, As, V) | |
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Khit Ostrov (Khit Island), Northern Karelia, Karelia Republic, Northern Region, Russia Pink crystal of the garnet group, associated with kyanite and biotite. Fellow Mindaters indicate that it is of the pyrope-almandine series. Photo is about 2.2 mm in length. Photo and specimen: Steve Stuart. |
| © SMS 2007 | Photo ID: 131994 View Count: 157 |
Garnet Group : X3Z2(TO4)3 (X = Ca, Fe, etc·, Z = Al, Cr, etc·, T = Si, As, V) | |
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Khit Ostrov (Khit Island), Northern Karelia, Karelia Republic, Northern Region, Russia Pink crystals of garnet group, probably of the pyrope-almandine series. Associated minerals include kyanite and biotite. Photo is about 4.3 mm in length. Photo and specimen: Steve Stuart. |
| © SMS 2007 | Photo ID: 131996 View Count: 155 |
Genthelvite : Zn4Be3[S|(SiO4)3] | |
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Poudrette quarry (Demix quarry; Uni-Mix quarry; Desourdy quarry), Mont Saint-Hilaire, Rouville RCM, Montérégie, Québec, Canada Genthelvite crystal group from Mont Saint-Hilaire, Quebec, Canada. Field of view is 2.5 mm in length. The reflected light shows off the tetrahedral nature of the crystals. Photo by Steve Stuart. Specimen is in his collection. |
| © SMS 2005 | Photo ID: 28818 View Count: 422 |
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Poudrette quarry (Demix quarry; Uni-Mix quarry; Desourdy quarry), Mont Saint-Hilaire, Rouville RCM, Montérégie, Québec, Canada A group of pale green triangular genthelvite crystals with a clear, colorless, slightly inflated fluorite near the right side of the photo. The fluorite fluoresces pale blue-purple under SW, MW and LW UV light. The genthelvite fluoresces green, orange and green in the same sequence. Photo is 2.5 mm in length. Specimen and photo: Steve Stuart |
| © SMS 2006 | Photo ID: 50444 View Count: 294 |
Gmelinite : (Na2,Ca)Al2Si4O12·6H2O, Analcime : Na2[Al2Si4O12] · 2H2O, Natrolite : Na2[Al2Si3O10] · 2H2O | |
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Glenarm, Co. Antrim, Northern Ireland, UK Pyramidal orange gmelinite crystal associated with water-clear analcime and natrolite. Photo is about 8.6 mm in length. Specimen obtained at Detroit Gem and Mineral Show, October 12-14, 2007. Photo and specimen: Steve Stuart. |
| © SMS 2007 | Photo ID: 129719 View Count: 151 |
Gmelinite : (Na2,Ca)Al2Si4O12·6H2O, Analcime : Na2[Al2Si4O12] · 2H2O, Natrolite : Na2[Al2Si3O10] · 2H2O | |
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Glenarm, Co. Antrim, Northern Ireland, UK Bipyramidal gmelinite crystal associated with analcime and natrolite. Photo is about 8.6 mm in length. Photo and specimen: Steve Stuart. |
| © SMS 2007 | Photo ID: 129720 View Count: 130 |
Gmelinite-Na : (Na2,Ca)[Al2Si4O12] · 6H2O | |
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Poudrette quarry (Demix quarry; Uni-Mix quarry; Desourdy quarry), Mont Saint-Hilaire, Rouville RCM, Montérégie, Québec, Canada Thin hexagonal plates of gmelinite. Photo is 2.5 mm in length. Photographed by me. The specimen is in my collection. |
| © SMS 2005 | Photo ID: 31626 View Count: 344 |
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