|AllMinerals/JohnBetts-FineMinerals > Online Mineral Museum Photographic Archive > Minerals from Colorado > Siderite and Sphalerite var. Marmatite
|Siderite and Sphalerite var. Marmatite
|Gilman Mining District, Eagle County, Colorado
|Greenish-brown siderite crystals up to 7 mm mixed with black, 1-2 mm crystals of iron-rich sphalerite (variety marmatite). Ex. L. Russianoff collection
|For reference only
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