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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Dogtooth Calcite, Hydrocarbon Activators - Indiana
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SKU: MSW1333
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A nicely formed dogtooth calcite crystal with hydrocarbon activators, fluorescent under all wavelengths.
"Dogtooth Calcite" is a unique type of crystal and the name refers to the shape of the calcite crystals - a scalenohedral shape which resembles dogs’ teeth. Dogtooth calcite often occurs in caves or environments where the crystals can grow in an open space, such as geodes.
"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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