Chalcopyrite on Siderite after Calcite

specimen number:
3333413

location:
Himmelfahrt mine, Freiberg, Saxony, Germany

description:
A neat old time specimen with several labels coming from the Bergakademie Freiberg. The top of this matrix plate covered with scalenohedral crystals of what were once calcite, now replaced by siderite, measuring to 2.0 cm in size. Brassy crystals of chalcopyrite to 0.4 cm in size scattered throughout. Minimal micro-chipping present as seen in the photo in videos, still in good condition for this old time piece.

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