Gold (roasted gold)

specimen number:
2062911

location:
Cresson Mine, Cripple Creek, Teller Co., Colorado, USA

description:
An example of what is known as roasted gold, crude crystals to 0.4 cm in size on matrix. The specimen comes with a previous label from the collection of Ray DeMark, he purchased the specimen in Cripple Creek in 1957.

The Cresson Mine, located in the Cripple Creek district of Teller County, Colorado, is hosted within an ancient volcanic crater formed of phonolite and breccia, famous for its rich production history and spectacular high-grade ore vugs.

Roasted gold refers to gold recovered from refractory ores that were subjected to high-temperature heating to burn away interfering impurities such as tellurium and sulfur, which made the metal accessible for standard extraction processes.

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