Pyrite

specimen number:
2063816

location:
Eagle Mine, Gilman, Eagle Co., Colorado, USA

description:
A classic Colorado specimen with bright golden lustrous sharply formed crystals of pyrite to almost 3.0 cm in size completely covering the top of a massive pyrite matrix. This is in good condition with very minimal micro-damage present. The specimen comes with a previous label from the collection of Ray DeMark.

The Eagle Mine at Gilman in Eagle County, Colorado, is a legendary underground metal mining camp situated along the steep canyon walls of the Eagle River, famed for massive replacement sulfide deposits hosted within Paleozoic carbonate layers. Operating for over a century until its closure in the late twentieth century, the mine yielded immense quantities of silver, lead, copper, and zinc alongside striking collector specimens, where hydrothermal fluids circulating through the host rock precipitated brilliant metallic sulfides, including sharp pyrite crystals, sparkling galena, and sphalerite. Pyrite from this locality frequently formed bright, brassy cubic crystals and crystalline masses intergrown with quartz and other vein minerals, cementing the mine's reputation among classic mineral collectors for exceptional sulfide assemblages.

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