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Phlogopite : KMg3[(OH,F)2|AlSi3O10] | |
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Kiran, Koksha Valley (Kokscha; Kokcha), Badakhshan (Badakshan; Badahsan) Province, Afghanistan Gemmy amber-colored hexagonal prisms to 1.5 cm in length frozen in a white calcite matrix. 4.2 x 5.5 cm. Michael Shaw Collection. |
| © Michael Shaw | Photo ID: 214364 View Count: 56 |
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Kiran, Koksha Valley (Kokscha; Kokcha), Badakhshan (Badakshan; Badahsan) Province, Afghanistan 25 x 25 x 10 mm. Gemmy crystal, well terminated. |
| © Joseph A. Freilich, LLC | Photo ID: 170161 View Count: 152 |
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Kiran, Koksha Valley (Kokscha; Kokcha), Badakhshan (Badakshan; Badahsan) Province, Afghanistan 3.8 x 3.4 x 3.2 cm. These Sodalite (var: Hackmanite) specimens have provided collectors with some amazing pieces featuring some of the largest, sharpest and most colorful crystals ever seen. The colors of the Afghani Hackmanites ranges from blue to purple to pink and they show an amazing rich red fluorescence under longwave UV light. This specimen ... |
| © Rob Lavinsky | Photo ID: 139677 View Count: 197 |
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Kiran, Koksha Valley (Kokscha; Kokcha), Badakhshan (Badakshan; Badahsan) Province, Afghanistan Photo 1 of 6 Showing Hackmanite's purple colour on UV exposure and bleaching by light poor in UV. See: http://www.mindat.org/forum.php?read,5,115692,page=5 8x6 cm specimen of crude Hackmanite xls in Albite matrix. This is a dark adapted specimen that has been in the dark in a building at sea level for at least 6 months. There are published ... |
| © RWMW | Photo ID: 253514 View Count: 50 |
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