2913 Pyrite, Barite, Fluorite, Nakaye mine (Alamo mine), Derry District, Sierra County, New Mexico, USA

Tiny pyrite crystals on the face of a barite crystal, with dark purple fluorite associated. The barite is said to be coloured because of pyrite inclusions, but that even under a microscope, crystals can’t be seen. Except in this case you can see them. Width of view 5.75mm. Stack of 85 images.

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