Callaghanite, Houghton Co, MI - Item MSCLL008

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$35.00
$35.00
Unavailable
per item
A rather interesting piece of Callaghanite on 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: 54x42x33 mm
Weight: 95.6 g
1 available