Marcasite with Calcite, Quartz

specimen number:
8911235

location:
G.P. Materials quarry, Potosi, Missouri, USA

description:
An attractive combination piece, this a shapely matrix covered by sparkling micro crystals of quartz. Mostly covering this are golden micro crystals of sparkling marcasite. Small yellowish crystals of scalenohedral calcite are scattered throughout. In good condition and shows nicely all around. The specimen comes with a previous label from the Alton collection.

Located north of Potosi in Washington County, Missouri, the G.P. Materials South Quarry operates primarily as an active stone and aggregate deposit within the Paleozoic carbonate country rock of the region. As industrial excavation cuts through pockets, vugs, and structural cavities within the host rock, it exposes an entirely distinct suite of mineral specimens. Rather than representing the historic lead-focused workings of the wider district, collectors prize this specific quarry for exceptional specimens of crystallized sphalerite, brilliant marcasite aggregates, well-formed barite crystals, clear quartz, and associated calcite.

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