Calcite with Pyrite, Marcasite
specimen number:
3921189
location:
Conco mine, North Aurora, Kane Co., Illinois, USA
description:
Nice grouping of gemmy double terminated scalenohedral calcite crystals without matrix. Minor pyrite and marcasite present, the dark color due to the inclusions of marcasite. In great condition all around.
Size: 4.0 x 1.9 x 1.5 cm (miniature)
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