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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A deeply tenebrescent piece of hackmanite (sodalite) with bright blue analcime, minor tugtupite, minor polylithionite and some weird unknowns. Under midwave UV, you can see an area of pink – an unknown mineral. Under white light, you can see pink eudialye throughout the specimen.
The animation shows the color change (tenebrescence) after exposure to longwave and shortwave UV.