| 13btceis ((CALCITE on QUARTZ with ARSENOPYRITE and minor APATITE)), $10 MINIMUM BID, Panasqueira Mine, Portugal, 14 x 10 x 8 cm, Cabinet, | |
 | Here is a specimen from Panasqueira. Calcite crystals cover underlying Quartz. Some of the Quartz are not totally covered by the Calcite. Also exposed dispite the Calcite are crystals of Arsenopyrite that are iridescent. Some damage but overall in great shape for its size. |
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