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Groutite from Robert Mine, Cuyuna Range, Crow Wing County, Minnesota

 
Groutite from Robert Mine, Cuyuna Range, Crow Wing County, Minnesota

Groutite from Robert Mine, Cuyuna Range, Crow Wing County, Minnesota

Groutite from Robert Mine, Cuyuna Range, Crow Wing County, Minnesota

DESCRIPTION:No. 48400
Mineral:Groutite
Locality:Robert Mine, Cuyuna Range, Crow Wing County, Minnesota
Description:Uncommonly large cluster of lustrous black groutite crystals in a banded formation of groutite and Mn-oxides. This specimen from the private collection an old miner at the mine. See article: Groutite From the Robert Mine in Mineral News v.2 #5.
Overall Size:7.5x5x3.5 cm
Crystals:1-4 mm
Status: Sold - Posted here for reference only
Buy similar: Minerals from Midwest, USA > Oxide Mineralss

 

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