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Name: |
skutterudite |
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Class: |
Phosphates/Arsenates/Vanadates |
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Chemistry: |
(Co,Ni)As3 Mixed Cobalt-Nickel Arsenate |
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Color(s): |
metallic gray, tin-white streak:black |
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Hardness: |
5.5 - 6.0 |
SpecGrav: |
6.1 - 6.9 |
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Fracture: |
conchoidal |
Cleavage: |
distinct |
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Crystal: |
isometric (crystals are often octahedral, cubic, and dodecahedral) |
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Envronment: |
Formed in hydrothermal veins, medium to high temperature |
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Association: |
arsenopyrite, silver, bismuth, calcite |
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Locals: |
| Iran | Germany | Canada | Morocco | Colorado, Arizona, USA | |
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Misc: |
The name is derived from one of its more famous locals, Skutterrud, Norway. Fumes smell strongly of garlic when heated. (not recommended) |
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Photos |
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1.) Bou Azzer, Morocco |
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