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Greenockite with Sphalerite, Fluorite
specimen number:
3773186
location:
Knight Bros mine, Cave in Rock, Hardin Co., Illinois, USA
description:
Rare for this mining district, yellowish green crystalline greenockite across the top of a fluorite matrix was sphalerite. An old specimen comes with an antique label as seen at the beginning of the video, at one time part of the collection at Washington University in St. Louis, Missouri. Noted mineralogist Fred Pough collected the specimen in 1934.
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