Calcite with Aurichalcite
specimen number:
9892139
location:
Ojuela Mine, Mapimi, Durango, Mexico
description: The Ojuela Mine, located in Mapimi, Durango, Mexico, was discovered by Spanish prospectors in 1598 and operated intermittently for over 350 years before closing commercially in 1932. Geologically, the deposit is hosted within deformed Cretaceous limestone units that have been intruded by Tertiary igneous rocks, creating an extensive hydrothermal pipe and vein system. Intense secondary oxidation processes acting on primary sulfide mineralization have produced a world-renowned zone of rich secondary mineral assemblages, making the mine famous for its exceptional variety of colorful arsenates, carbonates, and oxides.
Open pockets throughout this limonite matrix are lined with attractive crystallized groupings of calcite to 0.4 cm in size, these bluish green in color due to inclusions of aurichalcite. In good condition.
Size: 7.5 x 7.0 x 3.0 cm (small-cabinet)
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Related by Mineral (Calcite):
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Related by Location (Ojuela Mine):
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Size: 5.0 x 5.0 x 3.5 cm (miniature)