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bituminous coal close to anthracite - Upper Cretaceous Iles Formation near Hamilton, Colorado - hand/display specimen

$ 9.50

The Green River coal region's southeast arm reaches into Moffat and Routt Counties in northwest Colorado. This coal comes from the Upper Cretaceous Iles Formation of the Mesaverde Group and is ranked as high-volatile C bituminous coal. The coal beds vary from one to six meters in thickness.

This coal was collected from an exposure on Colorado Highway 13 one mile north of Hamilton, Colorado in Moffat County. Green River coal is low sulfur and is burned in steam-electric generating plants chiefly in Colorado. Generally, the older a coal the higher its rank. Deep burial and a high geothermal gradient, as in the deep basins of northwestern Colorado can significantly increase the rank of a coal. This coal appears close to anthracite.



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