Calcite

specimen number:
8311375

location:
Wenshan, Yunnan, China

description:
A large uniquely crystallized calcite from this prolific locality. This is in good condition.

The Wenshan Prefecture in Yunnan Province, China, is a globally recognized mineral district situated within a complex geological terrain of karstified limestone and metamorphic rocks. Geologically, the region is famous for its secondary oxidation zones, where zinc-rich hydrothermal fluids interacted with carbonate host rocks to produce spectacular specimens of blue hemimorphite. These minerals are typically found in vugs and cavities within the limestone, often occurring as vibrant, sky-blue botryoidal crusts or lustrous crystalline aggregates that sometimes exhibit a distinctive velvety or sparkly luster. Historically, mining in Wenshan has focused on base metals such as zinc, lead, and tin, with small-scale artisanal and state-led operations expanding significantly during the late 20th century. The peak period for high-quality mineral specimen recovery occurred between the late 1990s and the early 2010s, as mining activities in areas like the Dulong and Beidou districts brought these colorful secondary minerals to the international market. While industrial production for ore concentrates continues today, Wenshan remains a primary reference locality for collectors due to the extraordinary color and quality of its hemimorphite.

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