AllMinerals/JohnBetts-FineMinerals > Online Mineral Museum Photographic Archive > Minerals from Michigan > Psilomelane (romanèchite+hollandite+cryptomelane)

Psilomelane (romanèchite+hollandite+cryptomelane) from Ironwood District, Gogebic County, Michigan

DESCRIPTION:	No. 62292
Mineral:	Psilomelane (romanèchite+hollandite+cryptomelane)
Locality:	Ironwood District, Gogebic County, Michigan
Description:	Heavy specimen of brown black psilomelane with mammilary hemispherical formations to 30 mm diameter on the top face. Psilomelane is a mixture of oxides of manganese composed of romanèchite, hollandite, cryptomelane, etc.). Ex. Morris Museum Geology Department (N.J.)
Overall Size:	11x9x5.5 cm
Crystals:
Archived:	For reference only
Buy similar:	Minerals from Midwest, USA > Oxide Mineralss

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