Trilithionite

specimen number:
2354237

location:
Brown Derby Mine, Gunnison Co., Colorado, USA

description:
Purple micaceous crystals of trilithionite on a massive quartz matrix. In good condition.

Located in the Gunnison County of Colorado, the Brown Derby Mine is a famous granitic pegmatite deposit situated within Precambrian metamorphic rocks of the Sawatch Range. The geology features complex zoned pegmatites rich in rare elements formed during deep magmatic crystallization and hydrothermal activity. Discovered and developed primarily for its economic potential, the mine has a rich history of mining and mineral collecting, operating notably for lithium-bearing minerals, beryl, and columbite-tantalite. It is widely recognized among geologists and mineral collectors as a classic locality for studying complex pegmatite mineralogy and for producing notable specimens of rare accessory minerals.

Questions about this specimen?
Send an email or call us: 314-341-1811.