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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Gem Tugtupite - Greenland
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SKU: MSJ0353
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An incredible, unusual gemmy and extremely tenebrescent tugtupite specimen from Kangerlussaq. On one side displays deep purple colored tugtupite - extremely gemmy; many cabochons are made from this material.
Bright cherry red fluorescing tugtupite on an analcime and lujavrite matrix. Very nicely tenebrescent. Under LW the color shifts to salmon. Note that unlike sodalite/hackmanite from Greenland, red tugtupite does not fade quickly - one of the reasons it is valued as a gemstone.
Under midwave UV light this piece glows all sorts purple-lilac, magenta, red colors. It also displays an incredible phosphorescence.
Tugtupite is a very rare mineral - found in only three places around the world (Kola Russia, Mt St Hilaire, and Greenland). Pieces from Greenland are the most sought after due to coverage, size and brightness.
"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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