Home > Copper Minerals – January 21 > MS1499 Chalcopyrite

Chalcopyrite


Chalcopyrite is a copper iron sulfide. The mineral name combines the Greek root chalco for copper with the mineral name pyrite. German mining engineer Johann Henckel (1678-1744) coined the mineral name in his 1725 Pyritologia. The crystal structure of chalcopyrite is related to sphalerite by doubling one unit cell edge, leading to tetragonal symmetry. Consequently, its typical pseudo-tetrahedral crystal shape is referred to as sphenoidal.

This specimen consists of a single pseudo-tetrahedral (technically sphenoidal) crystal of chalcopyrite. There is minor iron stained quartz matrix also attached. The crystal is complete, with only minor micro-chipping. Very fine for the species and a nice Mexican miniature for regional collectors.

Price: $150

Item code: MS1499

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