Beryl

specimen number:
2063469

location:
California Mine, Mt. White, Chaffee Co., Colorado, USA

description:
A superb thumbnail for this Colorado locality. A loose glassy gem quality light blue terminated crystal of beryl, this a variety often called aquamarine. In super condition. The specimen comes with a previous label from the collection of Ray DeMark. This weighs 6.79 g.

The California Mine is situated at high altitude in the Sawatch Range near Mount White and Mount Antero in Chaffee County, Colorado. Its geology consists of Tertiary-age granitic stocks and pegmatites that intruded older metamorphic rocks, forming miarolitic cavities rich in rare elements. Commercial interest and mining activity focused on extracting strategic minerals and gem materials from these pegmatitic veins and stockworks. The locality is famous among mineral collectors for producing exquisite gem-quality crystals of the blue-to-green variety of beryl known as aquamarine, alongside associated minerals like phenakite, topaz, and fluorite found lining open pockets in the weathered granite.

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