Tazna Mine (Tasna Mine; Tazna-Rosario Mine)
Tasna Rosario, Cerro Tazna, Nor Chichas Province, Potosí, Bolivia
Key Information
Do not enter mining areas without proper authorization.
The Tazna Mine is likely located in Tasna Rosario, Cerro Tazna, Nor Chichas Province, Potosí, Bolivia, known for its high altitude and mining history.
Research suggests it produces tungsten, bismuth, and unique minerals like Atelestite and Zaïrite, appealing to mineral enthusiasts.
It seems likely the mine operates in hornfels rock within a dacitic volcanic dome, formed by igneous processes.
The evidence leans toward the mine being active, with a history tied to the region's long mining tradition, though specific start dates are unclear.
Local culture may include mining rituals like offering coca leaves, with Potosí's colonial architecture adding historical depth.
The climate is probably cold and semi-arid, with a short wet season, affecting the high-altitude ecology.
Geographic Location
The Tazna Mine is situated in Tasna Rosario, on Cerro Tazna, within the Nor Chichas Province of Potosí, Bolivia. Potosí is in the southwestern part of the country, at an elevation of about 4,090 meters, making it one of the highest cities globally. Nearby, the city of Potosí is famous for its silver mining history and well-preserved colonial architecture, offering a rich context for visitors.
Minerals Produced
The mine is known for its tungsten and bismuth minerals, with a diverse range including gold, silver, and unique specimens like Atelestite, Preisingerite, and Zaïrite. These uncommon minerals, such as Atelestite (Bi2(AsO4)O(OH)), are particularly exciting for collectors due to their rarity and distinctive occurrences.
Geological Structure
The Tazna Mine operates on W-Bi veins within hornfels rock, a metamorphic rock formed near magma bodies. This rock is part of a dacitic volcanic dome, suggesting an igneous origin, which is typical for such mineral deposits and adds to the geological interest for enthusiasts.
Mining History
The mine is currently active, focusing on tungsten and bismuth. While specific historical details are scarce, the region has a long mining history, particularly silver, dating back to the 16th century, as seen in nearby Potosí. This context suggests the Tazna Mine fits into a broader tradition, though exact start dates and ownership remain unclear.
Local Culture and Characteristics
The local culture is deeply influenced by mining, with traditions like offering coca leaves to protect miners, reflecting the area's indigenous and colonial heritage. Potosí, nearby, features colonial architecture and is a UNESCO World Heritage Site (City of Potosí), adding historical and cultural depth for visitors.
Climate and Ecology
The climate is cold and semi-arid, with a long dry period and a short, intense wet season from December to March. At high altitude, temperatures vary significantly between day and night, creating a unique ecology adapted to these conditions, which may influence mineral formation processes.