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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Banded iron formation from
Gloria mine (Donahue mine; McKensie mine; Lauretta Manganiferous Mines), Cuyuna North Range, Crow Wing County, Minnesota, USA


Locality type:Mine
Classification
Type:Banded iron formation
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Banded iron formation data
Locality Data:Click here to view Gloria mine (Donahue mine; McKensie mine; Lauretta Manganiferous Mines), Cuyuna North Range, Crow Wing County, Minnesota, USA
Data Identifiers
Mindat Occurrence Record ID:1586471
Long-form Identifier:1:3:1586471:2
GUID (UUID V4):0
Nearest other occurrences of Banded iron formation
2.0km (1.3 miles) ⓘFerro Mine (Duluth-Brainerd Mine), Cuyuna North Range, Crow Wing County, Minnesota, USA
2.1km (1.3 miles) ⓘMerritt No. 1 mine, Cuyuna North Range, Crow Wing County, Minnesota, USA
2.6km (1.6 miles) ⓘMilford Mine, Cuyuna North Range, Crow Wing County, Minnesota, USA
2.7km (1.7 miles) ⓘMaroco Mine, Ironton, Cuyuna North Range, Crow Wing County, Minnesota, USA
3.0km (1.9 miles) ⓘMangan No. 1 mine (Mangan-Stai mine), Cuyuna North Range, Crow Wing County, Minnesota, USA
4.3km (2.7 miles) ⓘHillcrest Mine-North (Adams Brothers Company et al), Cuyuna North Range, Crow Wing County, Minnesota, USA
4.7km (2.9 miles) ⓘPennington Mine, Cuyuna North Range, Crow Wing County, Minnesota, USA
4.7km (2.9 miles) ⓘPortsmouth Mine, Cuyuna North Range, Crow Wing County, Minnesota, USA
4.9km (3.0 miles) ⓘHillcrest Mine-South (R M Adams Company), Cuyuna North Range, Crow Wing County, Minnesota, USA
5.1km (3.2 miles) ⓘArmour No. 1 and No. 2 mines, Cuyuna North Range, Crow Wing County, Minnesota, USA
References
Melcher, Frank, G.B. Morey, Peter L. McSwiggen, Jane M. Cleland and S.E. Brink (1996) Hydrothermal Systems in Manganese-rich Iron-Formation of the Cuyuna North Range, Minnesota: Geochemical and Mineralogical Study of the Gloria Drill Core, Minnesota Geological Survey, Report of Investigations 46, 59 p.
 
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