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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Stilpnomelane from
Merritt No. 2 Mine (Gorham Garbert Company), Cuyuna North Range, Crow Wing County, Minnesota, USA


Locality type:Mine
Classification
Species:Stilpnomelane
Formula:K4Fe482+[Si64Al8]O164(OH)52 · nH2O
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Stilpnomelane data
Locality Data:Click here to view Merritt No. 2 Mine (Gorham Garbert Company), Cuyuna North Range, Crow Wing County, Minnesota, USA
Data Identifiers
Mindat Occurrence Record ID:960352
Long-form Identifier:1:3:960352:3
GUID (UUID V4):0
Nearest other occurrences of Stilpnomelane
0.6km (0.4 miles) ⓘMerritt No. 1 mine, Cuyuna North Range, Crow Wing County, Minnesota, USA
3.1km (1.9 miles) ⓘArko Mine, Cuyuna North Range, Crow Wing County, Minnesota, USA
3.4km (2.1 miles) ⓘMahnomen No. 2 mine, Ironton, Cuyuna North Range, Crow Wing County, Minnesota, USA
3.6km (2.2 miles) ⓘAlstead-North Hillcrest mine, Cuyuna North Range, Crow Wing County, Minnesota, USA
4.8km (3.0 miles) ⓘPortsmouth Mine, Cuyuna North Range, Crow Wing County, Minnesota, USA
7.5km (4.7 miles) ⓘSagamore Mine (Syracuse property), Riverton, Cuyuna North Range, Crow Wing County, Minnesota, USA
20.0km (12.4 miles) ⓘCuyuna North Range, Crow Wing County, Minnesota, USA
84.3km (52.4 miles) ⓘAlsted Mine (Shawmut Company), Cuyuna North Range, Carlton County, Minnesota, USA
References
McSwiggen, Peter L., Morey, G. B., Cleland, Jane M. (1994) Occurrence and genetic implications of hyalophane in manganese-rich iron-formation, Cuyuna Iron Range, Minnesota, USA. Mineralogical Magazine, 58 (392) 387-399 doi:10.1180/minmag.1994.058.392.04
 
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