calcite (w. conichalcite-duftite and dioptase)

conichalcite-duftite; dioptase

Colourless rhombohedral crystals of calcite (to 13 mm), richly included with microscopic blue-green dioptase, and with somewhat less abundant apple-green conichalcite-duftite (XRD verified).  The conichalcite-duftite inclusions appear to form a discreet layer in the calcite crystals, while the dioptase is more widely dispersed.  The outer portions of the calcite rhombs are water-clear and highly transparent, so that the included minerals form well-defined phantoms in contrasting shades of green.

Neither the provenance nor the location in the mine is recorded.