Montreal, Iron County, Wisconsin

LOCATION: NE Ne Sec. 33 T.46N. R.2E.

ACCESSIBILITY: Some old dumps still accessible, underground workings closed.

GEOLOGY: Mine in the Proterozoic Ironwood Iron Formation. cross-cut by Keweenawan dikes. Permeability barriers imposed by the dikes localized rich zones of supergene mineralization down over 5,000 feet. Large vugs encountered made for colorful associations of may of the following minerals.

Montreal miners

Miners undeground in the Montreal Mine, Iron County, WI, circa 1950.

MINERALOGY NOTES:

Actinolite
Barite
Braunite
Calcite
Celestine
Dickite
Dolomite
Galena
Goethite
Gypsum
Hematite
Kaolinite
Magnetite
Manganite
Marcasite
Minnesotaite
Neotocite
Pyrite
Pyrolusite
Quartz
Rhodochrosite
Romanechite
Siderite
Stilpnomelane
Talc
Unknown - pink fibrous minerals, originally called inesite
Unknown - Grey fibrous manganese mineral in vugs with goethite, called "steel woolite"

BIBLIOGRAPHIC REFERENCES: Van Hise and Irving, 1892; Dickey, 1938; Whelan and Goldich, 1961; LaBerge, 1984; Barlow, 1997.

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