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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Sodalite (Hackmanite) - Afghanistan
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SKU: MSW1483
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Tenebrescent hackmanite from Afghanistan. Very unusual fluorescent responses, tenebrescent, phosphorescent. This is piece is slightly tenebrescent, darkening to a light purple in seconds. Unlike Greenland hackmanite, it can take a long time to fade back (time depends on the intensity of the light source).
"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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