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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Agrellite, Eudialyte, Feldspar - Canada
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SKU: MSJ0171
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A large specimen, the agrellite displaying a bright pink under shortwave/midwave and a pearly grey-white luster under natural light. The best color is under MW, almost a lavender. Found in nepheline syenites, syenitic pegmatites - alkaline complex. Green fluorescence is likely uranyl activated salts. The feldspar is a nicely fluorescent magenta color, strong for the species.
The eudialyte is a beautiful, gemmy pink-red in daylight. Rare to find pieces with vlasovite and agrellite viewable together. They are, sadly, most often found on opposite surfaces.
Agrellite exhibits a brief intense phosphorescence (BIP) of yellowish color when quickly removed from under a shortwave (or midwave) UV light.
"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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