Chalcopyrite, Fluorite, Calcite

Specimen ID: 635-9J8

Chalcopyrite : CuFeS2
Fluorite : CaF2
Calcite : CaCO3
As recorded:
Cave-in-Rock Sub-District, Hardin Co., Illinois, USAi
55mm x 70mm x 58mm
weight: 120g
A very dramatic and aesthetic combo specimen from Cave-in-Rock. Here we have a pale, purple fluorite crystal with stepped growth patterns and chalcopyrite inclusions. On one side of the fluorite is a patch of very elongated, pointy calcite crystals.
Previous data
Name withheld

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