Minerals of Wisconsin

Mineral	Chem. Formula
20 Rows	Data exported from DRC 2.0 (c) 2009 Gary Kindel
ACANTHITE	Ag2S
BARITE	BaSO4
CALCITE	CaCO3
CHALCOCITE	Cu2S
CHALCOPYRITE	CuFeS2
CORUNDUM	Al2O3
DOLOMITE	CaMg(CO3)2
FERROCOLUMBITE	Fe++Nb2O6
GALENA	PbS
GOLD	Au
HEMATITE	alpha-Fe2O3
KYANITE	Al2SiO5
MAGNETITE	Fe+2Fe+32O4
MANGANOCOLUMBITE	(Mn,Fe++)(Nb,Ta)2O6
MARCASITE	FeS2
MONTMORILLONITE	(Na,Ca)0,3(Al,Mg)2Si4O10(OH)2.nH2O
PYRITE	FeS2
QUARTZ	SiO2
SPHALERITE	(Zn,Fe)S
VERMICULITE	(Mg,Fe++,Al)3(Al,Si)4O10(OH)2.4H2O

Minerals of Wisconsin

Here is a nice acticle on The Flambeau Mine in Rusk Co. Wisconsin.

Mineralogy of Wisconsin site

From Wisconsin Dept of Natural Resources (WI DNR):

• Mining in Wisconsin
• The Chequamegon-Nicolet National Forest authorizes recreational mineral collecting.