Calcite - Challenger Cave, Nuevo Leon, Mexico

Macro photos of a terlingua-type calcite crystal. This material is colorless in white light, bright pink in LW, and (not pictured) blue in SW. It also has a blue phosphorescence in all wavelengths. Pictured is LW and white light, and phosphorescence after LW.

Lit by a 365nm flashlight. Specimen is 26 x 16 x 8mm.

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