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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Sericite from
Copper Glance, Sunset, Boulder County, Colorado, USA


Locality type:Mine
Classification
Species:Muscovite var: Sericite
Formula:KAl2(AlSi3O10)(OH)2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Sericite data
Locality Data:Click here to view Copper Glance, Sunset, Boulder County, Colorado, USA
Data Identifiers
Mindat Occurrence Record ID:662406
Long-form Identifier:1:3:662406:4
GUID (UUID V4):0
Nearest other occurrences of Sericite
5.9km (3.6 miles) ⓘCold Spring Mine, Boulder County Tungsten Mining District, Boulder County, Colorado, USA
6.8km (4.2 miles) ⓘCash Mine, Gold Hill, Gold Hill Mining District, Boulder County, Colorado, USA
7.4km (4.6 miles) ⓘGrand Republic Occurrence, Gold Hill Mining District, Boulder County, Colorado, USA
7.6km (4.7 miles) ⓘIngram mine (Valley Forge Occurrence; Critic and Railroad Boy; Sunshine; Three Brothers; Atchison; Belle; Golden Eagle; Melvina; Baron; Richmond), Gold Hill Mining District, Boulder County, Colorado, USA
8.9km (5.5 miles) ⓘDorothy Mine, Boulder County Tungsten Mining District, Boulder County, Colorado, USA
9.0km (5.6 miles) ⓘKatie Mine, Boulder County Tungsten Mining District, Boulder County, Colorado, USA
9.6km (6.0 miles) ⓘInterocean Mine, Gold Hill Mining District, Boulder County, Colorado, USA
9.9km (6.2 miles) ⓘNugget Group, Jamestown Mining District, Boulder County, Colorado, USA
10.2km (6.3 miles) ⓘBoulder County Mine, Caribou Mining District, Boulder County, Colorado, USA
10.6km (6.6 miles) ⓘPoorman group, Gold Hill Mining District, Boulder County, Colorado, USA
References
Lovering, T.S., Goddard, E.N. (1950) Geology and ore deposits of the Front Range, Colorado. Professional Paper 223. US Geological Survey doi:10.3133/pp223
 
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