#long wave
Fluorite from the Ojuela Mine, Mapimi, Durango, Mexico. Pictured under Long wave ultraviolet and white light. The widest face of the biggest crystal is 2.9 cm.
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Fluorite from the Ojuela Mine, Mapimi, Mexico shown under long wave ultraviolet (black light) and white light. The main crystal is 2.2 cm along the long edge.
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Mystery rock from a mystery location picked up at a garage sale. Shown under long wave ultraviolet and white light. Some little bruises on the golden cauliflower side, but with luck I think they might buff out.
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Terlingua Calcite on the left and fluorapatite from Wana, South Waziristan, Khyber-Pakhtunkhwa (formerly NWFP: North-West Frontier Province), Pakistan on the right. Shown under short wave ultraviolet, long wave ultraviolet, mid-wave ultraviolet, and white light. It’s interesting to me that they have opposite pink vs. blue responses to short wave vs. long wave UV.
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