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
Grand Republic Occurrence, Gold Hill Mining District, Boulder County, Colorado, USA


Locality type:Occurrence
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 Grand Republic Occurrence, Gold Hill Mining District, Boulder County, Colorado, USA
Data Identifiers
Mindat Occurrence Record ID:662583
Long-form Identifier:1:3:662583:2
GUID (UUID V4):0
Nearest other occurrences of Sericite
1.6km (1.0 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
2.7km (1.7 miles) ⓘKatie Mine, Boulder County Tungsten Mining District, Boulder County, Colorado, USA
2.9km (1.8 miles) ⓘDorothy Mine, Boulder County Tungsten Mining District, Boulder County, Colorado, USA
3.0km (1.8 miles) ⓘCash Mine, Gold Hill, Gold Hill Mining District, Boulder County, Colorado, USA
3.2km (2.0 miles) ⓘPoorman group, Gold Hill Mining District, Boulder County, Colorado, USA
3.6km (2.2 miles) ⓘInterocean Mine, Gold Hill Mining District, Boulder County, Colorado, USA
6.5km (4.0 miles) ⓘNugget Group, Jamestown Mining District, Boulder County, Colorado, USA
7.4km (4.6 miles) ⓘCopper Glance, Sunset, Boulder County, Colorado, USA
8.1km (5.0 miles) ⓘBlue Jay Mine, Jamestown, Jamestown Mining District, Boulder County, Colorado, USA
9.5km (5.9 miles) ⓘBueno (Buena Group), Jamestown 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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