Chalcopyrite, Fluorite, Calcite

Specimen ID: 635-9J8

Mineral(s)
Chalcopyrite : CuFeS2
Fluorite : CaF2
Calcite : CaCO3
Locality
As recorded:
Cave-in-Rock Sub-District, Hardin Co., Illinois, USAi
Dimensions
55mm x 70mm x 58mm
weight: 120g
Description
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
Mineral(s)
Name withheld

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4,273,480 minIDs have been issued as of 26th Apr 2019 11:19 am BST