This remarkable specimen iis the richest, most colorful large example of this classic material I have yet seen. I am told they were found in the 1950s, primarily. This comes out of a small midwestern museum collection, where it has been sheltered all these years, and the pockets of crystals are in incredible condition. I have never seen the mineral in such thick, velvety layers of long crystals before. I believe it to be quite significant , thus, both for the locality AND for the species
Attribution: Rob Lavinsky, iRocks.com – CC-BY-SA-3.0
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