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), Minor Tugtupite - Greenland
$200.00 USD
SKU: MSG1565-111
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A nicely tenebrescent sodalite (hackmanite) sphere. This sodalite is bright under all wavelengths, midwave, shortwave and longwave with a nice tenebrescence under both shortwave.
On one side of the sphere, there is a small area of tugtupite – we don’t usually see this in Greenland sodalite. Very unique stuff. You won’t find many Greenland sodalite spheres such as this one on the market.
Green is likely uranyl activated.
What is tenebrescence? This is the process when the sodalite on this piece changes color after exposure to UV (shortwave or longwave), darkening to a purple as shown in the GIF - a unique hue compared to other Greenland sodalites. Under longwave the bright orange fluorescence is unmistakable.
"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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