Calcite

specimen number:
2062417

location:
Aurora Mine, Charcas, San Luis Potosi, Mexico

description:
Glassy gem colorless crystals of calcite measuring to 2.5 cm in size across the top of a calcite crystal covered matrix. This is in good condition.

Charcas, located in the northern part of San Luis Potosi, Mexico, is a historic mining district with operations dating back to the colonial era, officially founded around the late sixteenth century. Geologically, the district is hosted within Mesozoic limestone and shale sequences that were intruded by Tertiary felsic to intermediate igneous dikes and stocks, resulting in extensive skarn and replacement-style mineralization. The area became famous for its complex polymetallic ore bodies yielding rich deposits of silver, lead, zinc, and copper, alongside a diverse array of well-crystallized secondary and hydrothermal minerals that remain highly prized by international collectors.

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