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Athabascaite, Umangite, Berzelianite
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| Mineral: | Athabascaite: Cu5Se4 Umangite: Cu3Se2 Berzelianite: Cu2Se | ||||
| Comments: | Reflected light photomicrograph of umangite (pinkish), berzelianite (gray), athabascaite (small white areas in berzelianite), calcite (olive). | ||||
| Location: | Sierra de Umango, La Rioja, Argentin. | ||||
| Scale: | Not Given. | ||||
| Copyright: | © Jeff Weissman / Photographic Guide to Mineral Species | ||||
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