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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Sphalerite from
Brunswick Mine (Brunswick vein; New Brunswick Mine), Idaho-Maryland group, Grass Valley, Grass Valley Mining District, Nevada County, California, USA


Locality type:Mine
Classification
Species:Sphalerite
Formula:ZnS
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Sphalerite data
Locality Data:Click here to view Brunswick Mine (Brunswick vein; New Brunswick Mine), Idaho-Maryland group, Grass Valley, Grass Valley Mining District, Nevada County, California, USA
Data Identifiers
Mindat Occurrence Record ID:329910
Long-form Identifier:1:3:329910:4
GUID (UUID V4):0
Nearest other occurrences of Sphalerite
1.8km (1.1 miles) ⓘSouth Idaho Consolidated Quartz Mine (South Idaho Consolidated; South Idaho Cons. Qtz.; South Idaho vein; ABC Mine; S.B.C. claim; ; OK Mine; O.K. claim), Idaho-Maryland group, Grass Valley, Grass Valley Mining District, Nevada County, California, USA
2.2km (1.3 miles) ⓘGreen Mountain Mine, Sultana Mine (Electric Mine; Sultana-Orleans Mine), Empire Star group (Empire Star Mines Company holdings), Grass Valley, Grass Valley Mining District, Nevada County, California, USA
2.2km (1.3 miles) ⓘIdaho-Maryland Mine (Idaho Maryland prospect; Maryland Mine; Howard Hill/Morning Dew; Idaho Maryland-Brunswick), Idaho-Maryland group, Grass Valley, Grass Valley Mining District, Nevada County, California, USA
2.5km (1.5 miles) ⓘOsborn Hill Mine (Osborn Hill vein; Woodberry Mine), Empire Star group (Empire Star Mines Company holdings), Grass Valley, Grass Valley Mining District, Nevada County, California, USA
2.5km (1.6 miles) ⓘSultana Mine (Electric Mine; Sultana-Orleans Mine), Empire Star group (Empire Star Mines Company holdings), Grass Valley, Grass Valley Mining District, Nevada County, California, USA
2.6km (1.6 miles) ⓘEureka Gold Quartz Mine (Eureka Consolidated; Eureka Mine; Eureka Gold Qtz; Roannaise), Idaho-Maryland group, Grass Valley, Grass Valley Mining District, Nevada County, California, USA
2.7km (1.7 miles) ⓘTelegraph Mine, Empire Star group (Empire Star Mines Company holdings), Grass Valley, Grass Valley Mining District, Nevada County, California, USA
3.2km (2.0 miles) ⓘW.Y.O.D. Quartz Mine (W.Y.O.D. Qtz; W.Y.O.D. vein; Work Your Own Diggings Mine; Cassidy Consolidated Extension Mine), Pennsylvania Mine [1] (Pennsylvania Consolidated Qtz; Pennsylvania-W.Y.O.D.; Pennsylvania vein; Pennsylvania-Wyod; Wyod), Empire Star group (Empire Star Mines Company holdings), Grass Valley, Grass Valley Mining District, Nevada County, California, USA
3.3km (2.0 miles) ⓘPennsylvania Mine [1] (Pennsylvania Consolidated Qtz; Pennsylvania-W.Y.O.D.; Pennsylvania vein; Pennsylvania-Wyod; Wyod), Empire Star group (Empire Star Mines Company holdings), Grass Valley, Grass Valley Mining District, Nevada County, California, USA
4.0km (2.5 miles) ⓘGolden Center Mine (Garage vein; Sleep vein; Church Hill vein), Golden Center group (Cabin Flat Mine; Rock Roche Mine; Dromedary Mine; Scotia Mine; Peabody Mine; Garage/Dromedary/Berriman/Peabody), Grass Valley, Grass Valley Mining District, Nevada County, California, USA
References
(2005) Mineral Resources Data System (MRDS), US Geological Survey.
 
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