Callaghanite, Houghton Co, MI - Item MSCLL-011 SOLD!

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$25.00
$25.00
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Charming piece of Callaghanite with copper from Houghton Co, MI. Recently we had acquired some pieces that we believe to be from the Champion #4 Mine in Painesdale, MI. The specimens displayed an odd blue coating on firebrick. It was not until recently through a combination of SEM-EDS analysis, EMP-WDS analysis, and Raman Spectroscopy that these blue coatings were conclusively identified as Callaghanite; a rare copper-magnesium mineral that is a new species in Michigan.
Approximate size: 49x42x13 mm
Weight: 26.6 g