Golden Fleece Mine (Colorado)
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The Golden Fleece Mine is a gold mining site in Hinsdale County, Colorado, 5 miles (8 km) south of Lake City. The mine is located half a mile west of the north end of Lake San Cristobal. By 1904 it had produced $1,400,000 in silver and gold ore. The mine operated intermittently until 1919. Later, in the mid-1960s, some renewed interest in the property came up, especially in the Hiwassee lode area of the mine, but other than a couple of small test shipments, there is no recorded production until today.
The Golden Fleece Mine had much impact on the development of the whole area around Lake City. A description of the mine, with special emphasis on geological features, including photos and a profile map of the mine, was published by Thomas Arthur Rickard (Thomas Rickard was his cousin).[1][2] The Golden Fleece mine is also known for an unusual mineral, named hinsdalite (PbAl3(PO4)(SO4)(OH)6), which is a secondary phosphate mineral.