Abstract
Melanterite is of rather frequent occurrence in old entries of bituminous coal mines, forming bunches of silky fibers, and masses weighing as much as 30 pounds have been reported. A specimen of this mineral was obtained for our museum in an abandoned working of the Congo coal mine in Perry County, Ohio. The sample, as received, was a beautiful light green fibrous mineral resembling fibrous serpentine. The melanterite was contained between slate partings in the coal, its fibers being about two centimeters in length.
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