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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Huge specimen of minor phlogopite, calcite, scapolite (marialite), hauyne or perhaps massive afghanite.
Lots of areas appear to be homogeneous blends of minerals. For example, under SW the bluish fluorescence in the lower left appears to be perhaps diopside, or possibly gonnardite. But under LW the blue fluorescence disappears and is replaced by dark orange from what is likely hauyne.
Under MW a large area of dull blue/white fluorescence towards the upper left.