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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Siderite from
Portsmouth Mine, Cuyuna North Range, Crow Wing County, Minnesota, USA


Locality type:Mine
Classification
Species:Siderite
Formula:FeCO3
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Siderite data
Locality Data:Click here to view Portsmouth Mine, Cuyuna North Range, Crow Wing County, Minnesota, USA
Data Identifiers
Mindat Occurrence Record ID:247807
Long-form Identifier:1:3:247807:4
GUID (UUID V4):0
Nearest other occurrences of Siderite
1.3km (0.8 miles) ⓘSultana-Hopkins mine, Cuyuna North Range, Crow Wing County, Minnesota, USA
2.5km (1.5 miles) ⓘMangan No. 1 mine (Mangan-Stai mine), Cuyuna North Range, Crow Wing County, Minnesota, USA
2.7km (1.7 miles) ⓘHillcrest Mine-North (Adams Brothers Company et al), Cuyuna North Range, Crow Wing County, Minnesota, USA
2.9km (1.8 miles) ⓘHillcrest Mine-South (R M Adams Company), Cuyuna North Range, Crow Wing County, Minnesota, USA
3.1km (1.9 miles) ⓘAlstead-North Hillcrest mine, Cuyuna North Range, Crow Wing County, Minnesota, USA
3.3km (2.0 miles) ⓘHuntington Mine, Cuyuna North Range, Crow Wing County, Minnesota, USA
3.4km (2.1 miles) ⓘArko Mine, Cuyuna North Range, Crow Wing County, Minnesota, USA
4.5km (2.8 miles) ⓘMerritt No. 1 mine, Cuyuna North Range, Crow Wing County, Minnesota, USA
4.8km (3.0 miles) ⓘMerritt No. 2 Mine (Gorham Garbert Company), Cuyuna North Range, Crow Wing County, Minnesota, USA
5.9km (3.7 miles) ⓘKennedy Mine, Cuyuna North Range, Crow Wing County, Minnesota, USA
References
USGS Prof Paper 407
Blake, R. L. (1965) Iron phyllosilicates of the Cuyuna district in Minnesota. American Mineralogist, 50 (1-2) 148-169
 
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