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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Blue Sodalite- Greenland
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SKU: MSG1493
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The blue sodalite on this piece changes color when exposed to UV (SW), darkening to a light purple - a unique hue compared to other Greenland sodalites due to the natural blue coloring. Under SW it starts out orange but quickly shifts to a rusty color due to the tenebrescence (see animation below to view the tenebrescent change).
Bright green fluorescent areas are uranyl activated, unusual in that they occur mostly at the edges where the minerals intersect.
The natural color is a beautiful blue - one of the only blue sodalites which is strongly fluorescent, not to mention slightly tenebrescent.
"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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