The Colquiri tin mine, Bolivia, is at an elevation of 4200 meters in the central Andean Cordillera, southeast of La Paz, Bolivia. Mineralization followed steeply dipping normal faults of the gravity type. Cassiterite occurs in a gangue of fluorite, massive simple sulfides, siderite, and serpentine. Deposition occurred at moderate depth, and the deposit may be classified as lower intensity hypothermal.

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