Calcite with Dolomite

specimen number:
2063797

location:
Ben Hogan quarry, Lawrence Co., Arkansas, USA

description:
The top of this matrix is covered by attractive pink saddle shape curving rhombohedral crystals of dolomite to 0.5 cm in size. Scattered attractively across the top are colorless partly gemmy crystals of calcite to 2.0 cm in size. Small tiny crystals of chalcopyrite are scattered throughout. This is in good condition. The specimen comes with a previous label from the collection of Ray DeMark, and the piece was collected by Alan Gadberry.

The Ben Hogan Quarry, situated near Black Rock in northeastern Arkansas, is a prominent large quarry complex developed within mineralized veins and vugs of the Ordovician Powell Dolomite. Historically tied to regional base metal extraction efforts across the Ozark region, the site is best known today among mineral collectors and researchers for its cavities hosting well-crystallized specimens of amber to dark sphalerite, sharp chalcopyrite crystals, bright iron sulfides, and well-formed white to pinkish dolomite and calcite clusters.

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