Goethite
Negaunee Mine, Negaunee, Marquette County, Michigan, USA
14.4 x 14.4 x 6.4 cm. Mineral specimens from the long defunct Negaunee Iron Mine of Michigan are very rare, indeed. This fabulous, sculptural, large specimen consists of banded, botryoidal, goethite "kidney" ore. The lustrous botryoids have a very pleasing, variably brown color. The striking, large botryoid at the top is 4.8 cm. Contacts on the ...
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