SC1104 – Siderite, Sphalerite and Pyrite from the Eagle Mine, Colorado, USA

Aug 22, 2024 | Mineral Collection

A nice example of the combination of siderite, sphalerite, and pyrite from a classical locality. The siderite, light in color, presents itself in its lenticular habit, and contrasts nicely with the blocky black sphalerite, var marmatite, rich in iron. The matrix is almost completely composed by pyrite.
Locality: Eagle Mine, Gilman, Gilman Mining District, Eagle County, Colorado, USA (Mindat)
MinID: 0FY-UXD
Size: 8 x 6 x 4 cm
Weight: 416.8 g
Normal light.
Label from the Mines Museum of Earth Science at the Colorado School of Mines in Golden, Colorado.