Description
Calcite – CaCO3
Oskaloosa, Iowa
A rather unique specimen of calcite crystals with a coating of chalcopyrite, which give them an iridescent coloring, which is hard to capture here. This one has a teal coloring which can be seen to the naked eye in ordinary light; dogtooth crystals up to 3 mm.
Overall size 4.7 x 4.7 x 2.8 cm.
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