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Shawano Co., Wisconsin, USA

The oldest rocks in Shawano County are those of the Proterozoic (about 1.4 billion year old) Wolf River Batholith, which occupies most of the county. This poorly exposed but complex granitic pluton also hosts an anorthosite mass, as well as several complex pegmatites. To the east are exposed Cambrian and Ordovician strata dipping east gently off the Wisconsin arch. The carbonate Ordovician rocks are quarried. Thick glacial debris, forest and lakes obscure outcrop in much of the County. glacial drift can yield interesting float material including native copper masses, banded iron formation, jasper and "Lake Superior" agates.

Mineral List

Mineral list contains entries from the region specified including sub-localities
'Albite-Anorthite Series'
Augite
Bertrandite
Beryl
'Biotite'
'Chlorite Group'
'Columbite-Tantalite'
Cummingtonite
'Gadolinite'
'Hornblende'
Ilmenite
'K Feldspar'
Magnetite
Microcline
'Orthopyroxene Subgroup'
Phenakite
Quartz
var: Smoky Quartz
Schorl


19 entries listed. 10 valid minerals.

Localities in this Region

USA
USA

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Copyright © Jolyon Ralph and Ida Chau 1993-2014. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of thousands of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
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