Vote for your favorite mineral in #MinCup26! - Quartz vs. Asagiite
It's a classic vs a newbie as the most common named mineral in the crust Quartz is up against an exceedingly-rare sea foam-green mineral discovered just a few years ago Asagiite.
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Goethite from
Back Forty Deposit, Menominee County, Michigan, USA


Locality type:Deposit
Classification
Species:Goethite
Formula:Fe3+O(OH)
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Goethite data
Locality Data:Click here to view Back Forty Deposit, Menominee County, Michigan, USA
Data Identifiers
Mindat Occurrence Record ID:690291
Long-form Identifier:1:3:690291:9
GUID (UUID V4):0
Nearest other occurrences of Goethite
35.0km (21.7 miles) ⓘBreen Mine, Dickinson County, Michigan, USA
35.3km (21.9 miles) ⓘEmmett Mine, Dickinson County, Michigan, USA
36.2km (22.5 miles) ⓘVerona, Dickinson County, Michigan, USA
36.2km (22.5 miles) ⓘSturgeon Prospect, Dickinson County, Michigan, USA
36.8km (22.9 miles) ⓘEast Vulcan Mine, Vulcan, Dickinson County, Michigan, USA
37.2km (23.1 miles) ⓘLoretto Mine, Loretto, Dickinson County, Michigan, USA
37.6km (23.4 miles) ⓘPenn Mines, Norway, Dickinson County, Michigan, USA
37.7km (23.4 miles) ⓘWest Vulcan Mine, Vulcan, Dickinson County, Michigan, USA
37.8km (23.5 miles) ⓘBrier Hill Prospect, Dickinson County, Michigan, USA
38.2km (23.7 miles) ⓘAragon Mine, Dickinson County, Michigan, USA
References
Quigley, Tom, and Mahin, Bob, 2008, Back Forty Geology and Mineralization: Proceedings of the Institute on Lake Superior Geology, v. 54, Part 2 - Field Trip Guidebook, 66-85.
DeMatties, T. A. (2018). Effects of paleoweathering and supergene activity on volcanogenic massive sulfide (VMS) mineralization in the Penokean Volcanic Belt, northern Wisconsin, Michigan and east-central Minnesota, USA: Implications for future exploration. Ore Geology Reviews, 95, 216-237.
 
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