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Athabascaite, Umangite, Calcite


Athabascaite : Cu5Se4, Umangite : Cu3Se2, Calcite : CaCO3

Photo Copyright © 2008, Jeffrey G. Weissman  - This image is copyrighted. Unauthorized reproduction prohibited.
Locality: Sierra de Umango, La Rioja, Argentina
Reflected light photomicrograph of a polished section containing umangite (pinkish), athabascaite (small white areas) and calcite (olive).
Scale not provided.
Excalibur Mineral specimen.

This photo has been shown 127 times

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