Quartz Crystals on Calcite - San Antonio Mine, Chihuahua, Mexico
Small delicate crystals of bright green fluorescing quartz are peppered around a matrix of calcite on this striking specimen.
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Manganocalcite, Pyrite, Tetrahedrite - Peru
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SKU: MSW1516
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A nice specimen of brightly fluorescing manganocalcite with pyrite and metallic tetrahedrite crystals. You can also note the brief intense phosphorescence or “BIP”.
Brief intense phosphorescence is a phenomenon where for a brief moment immediately after the shortwave lamp is turned off, it displays a very short-lived, but bright phosphorescence or flash. It’s very difficult to capture this in the photos.
"Red" Sodalite (Hackmanite) - Deeply Tenebrescent Greenland Mineral
Red sodalite is named for the color it takes on when exposed to sunlight; it is nicely tenebrescent under longwave UV. Under shortwave UV the color deepens, in seconds, to almost black in some areas.
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A Short Study on Rare Occurrences of Apatite from the Ilimaussaq Complex, Greenland
Rarest of the rare from Greenland - apatite has only been observed in a handful of pieces over the decade+ we have been exploring Greenland. Blue apatite crystals fluorescing under UV.
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