M Cole
- Dec 1, 2015

Gypsum - San Juan Baptista, California

The middle pic shows the phosphorescence

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Fluorescent Chalcanthite with Antlerite, Brochantite-MDO2 and Shungite(1) - Dongchaun, China/荧光胆矾

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Diopside and Calcite, Pitwak Mine, Sar-e-Sang, Badakhshan, Afghanistan