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


Locality type:Mine
Classification
Species:Quartz
Formula:SiO2
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Goethite1
Data
Mineral Data:Click here to view Quartz data
Locality Data:Click here to view Portsmouth Mine, Cuyuna North Range, Crow Wing County, Minnesota, USA
Data Identifiers
Mindat Occurrence Record ID:247806
Long-form Identifier:1:3:247806:7
GUID (UUID V4):0
Nearest other occurrences of Quartz
0.7km (0.4 miles) ⓘArmour No. 1 and No. 2 mines, Cuyuna North Range, Crow Wing County, Minnesota, USA
2.1km (1.3 miles) ⓘManuel Mine, Cuyuna North Range, Crow Wing County, Minnesota, USA
2.2km (1.4 miles) ⓘMahnomen No. 2 mine, Ironton, 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
3.4km (2.1 miles) ⓘArko Mine, Cuyuna North Range, Crow Wing County, Minnesota, USA
3.7km (2.3 miles) ⓘMaroco Mine, Ironton, Cuyuna North Range, Crow Wing County, Minnesota, USA
4.0km (2.5 miles) ⓘMusser Mine (Hanna Mining Company), 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
References
USGS Prof Paper 407
Blake, R. L. (1965) Iron phyllosilicates of the Cuyuna district in Minnesota. American Mineralogist, 50 (1-2) 148-169
Cleland, Jane M., Morey, G. B., McSwiggen, Peter L. (1996) Significance of tourmaline-rich rocks in the North Range Group of the Cuyuna Iron Range, east-central Minnesota. Economic Geology, 91 (7) 1282-1291 doi:10.2113/gsecongeo.91.7.1282
 
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