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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Muscovite from
Kerr Cu-Au deposit, KSM project, Sulphurets District, Iskut River, Skeena Mining Division, British Columbia, Canada


Locality type:Deposit
Classification
Species:Muscovite
Formula:KAl2(AlSi3O10)(OH)2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Muscovite data
Locality Data:Click here to view Kerr Cu-Au deposit, KSM project, Sulphurets District, Iskut River, Skeena Mining Division, British Columbia, Canada
Data Identifiers
Mindat Occurrence Record ID:1001774
Long-form Identifier:1:3:1001774:4
GUID (UUID V4):0
Nearest other occurrences of Muscovite
3.6km (2.2 miles) ⓘSulphurets deposits, KSM project, Sulphurets District, Iskut River, Skeena Mining Division, British Columbia, Canada
4.6km (2.8 miles) ⓘSnowfield Au-Cu deposit, Sulphurets District, Iskut River, Skeena Mining Division, British Columbia, Canada
4.8km (3.0 miles) ⓘBrucejack Gold Mine, Sulphurets District, Iskut River, Skeena Mining Division, British Columbia, Canada
6.6km (4.1 miles) ⓘMitchell Cu-Au deposit, KSM project, Sulphurets District, Iskut River, Skeena Mining Division, British Columbia, Canada
8.9km (5.5 miles) ⓘIron Cap Cu-Au deposit, KSM project, Sulphurets District, Iskut River, Skeena Mining Division, British Columbia, Canada
17.7km (11.0 miles) ⓘA6 Anomaly, Skeena Mining Division, British Columbia, Canada
22.5km (14.0 miles) ⓘEskay Creek mine, Iskut River, Liard Mining Division, British Columbia, Canada
23.3km (14.5 miles) ⓘTreaty Glacier, Iskut River, Liard Mining Division, British Columbia, Canada
24.1km (15.0 miles) ⓘEast Gold Deposit, Stewart Area, Skeena Mining Division, British Columbia, Canada
28.9km (18.0 miles) ⓘGranduc Mine, Stewart, Skeena Mining Division, British Columbia, Canada
References
Macdonald, A. James, Lewis, Peter D., Thompson, John F. H., Nadaraju, Genga, Bartsch, Roland, Bridge, David J., Rhys, David A., Roth, Tina, Kaip, Andrew, Godwin, Colin I., Sinclair, Alastair J. (1996) Metallogeny of an Early to Middle Jurassic arc, Iskut River area, northwestern British Columbia. Economic Geology, 91 (6) 1098-1114 doi:10.2113/gsecongeo.91.6.1098
Lawley, Christopher J.M., Petts, Duane C., Lee, Well-Shen, Brueckner, Stefanie (2025) Pyrite geochemistry for deposit type prediction and exploration in the Golden Triangle, northwest British Columbia, Canada. Ore Geology Reviews, 177. 106447 doi:10.1016/j.oregeorev.2025.106447
 
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