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Adularia : KAlSi3O8 | |
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Central Mine, Central, Keweenaw Co., Michigan, USA Adularia crystals lining a vug in bleached basalt breccia. Field of view is 1.4 mm. Collected 2007 by D. Maietta. Lens: Mitutoyo M Plan Apo 10 0.28 F-stop: N/A Mounting: Normal, with tube lens FOV: 1.4 mm Lighting: Dual fiber partially diffused Processing: CombineZP pyramid-do-stack retouched with pyramid-max-contrast |
| © DMM | Photo ID: 189740 View Count: 116 |
Adularia : KAlSi3O8 | |
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Central Mine, Central, Keweenaw Co., Michigan, USA An arch of adularia crystals lining a vug in bleached basalt breccia. Field of view is 3.9 mm. Collected 2007 by D. Maietta. Lens: Edmund Optics Plan Apo 5X/0.14 F-stop: N/A Mounting: Normal, with tube lens FOV: 3.9 mm Lighting: Dual fiber partially diffused Processing: CombineZP pyramid-do-stack retouched with pyramid-max-contrast |
| © DMM | Photo ID: 189737 View Count: 76 |
Algodonite : (Cu1-xAsx) | |
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Ahmeek Mine, Ahmeek, Keweenaw Co., Michigan, USA Polished nodule. Harvard Mineralogical Museum specimen no. 60821. Label is about 5.5 cm long. P. Cristofono photo. |
| © 2007 Peter Cristofono | Photo ID: 94835 View Count: 258 |
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Mohawk Mine, Mohawk, Keweenaw Co., Michigan, USA Algodonite (formerly Whitneyite) - an approx 5 x 3 cm massive metallic polished nodular section. See additional photos and Charles Hoadley label. |
| © Christopher O'Neill | Photo ID: 160258 View Count: 193 |
Algodonite : (Cu1-xAsx) | |
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Keweenaw Co., Michigan, USA 8.4 x 5.3 x 5.3 cm. A brassy, nearly solid specimen of algodonite, a rare copper arsenide, from the Keweenaw Peninsula of Michigan. Undoubtedly an old piece. Ex Dr. Gary Hansen Collection. HEAVY at 474 grams or just over 1 pound! |
| © Rob Lavinsky | Photo ID: 113363 View Count: 181 |
Algodonite : (Cu1-xAsx) | |
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Mohawk Mine, Mohawk, Keweenaw Co., Michigan, USA Dull or brilliant grey Algodonite Size: 3 X 2 cm Collection and photo: Arliguie M |
| © Arliguie M | Photo ID: 218512 View Count: 68 |
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Keweenaw Co., Michigan, USA Algodonite – dendrite like brassy algodonite veins within an approx 7.5 x 5 x 6 cm quartz matrix. |
| © Christopher O'Neill | Photo ID: 260973 View Count: 11 |
Analcime : Na2[Al2Si4O12] · 2H2O | |
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Copper Falls Mine, Copper Falls, Keweenaw Co., Michigan, USA Cluster of heavily-included analcime crystals. Photo is about 2.2 mm in length. Photo and specimen: Steve Stuart. Mindat.org Photo of the Day - 29th Jun 2008 |
| © SMS 2008 | Photo ID: 151022 View Count: 333 |
Analcime : Na2[Al2Si4O12] · 2H2O | |
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Keweenaw Co., Michigan, USA An EXCELLENT, undamaged cluster of lustrous, off-white to tan, trapezohedral analcime crystals to 2.7 cm on matrix from the famous Keweenaw Peninsula of Michigan. The large crystal really sets off this fine piece. Ex Richard Hauck Collection. 5.0 x 4.5 x 3.0 cm |
| © Rob Lavinsky | Photo ID: 62342 View Count: 222 |
Analcime : Na2[Al2Si4O12] · 2H2O | |
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Phoenix Mine, Phoenix, Keweenaw Co., Michigan, USA Two 1.5 cm diameter analcime crystals with fluorapophyllite. Doug Merson photo and collection. |
| © DM 07 | Photo ID: 84975 View Count: 175 |
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