Vote for your favorite mineral in #MinCup26! - Sphalerite vs. Anorthite
Both zinc ore Sphalerite and calcium plagioclase feldspar Anorthite have perfect cleavage that will split cleanly if you hit them with a hammer, but only one can claim a larger split of your votes!
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Opal from
Faith clay pit, Steamboat Springs Mining District, Washoe County, Nevada, USA


Locality type:Pit
Classification
Species:Opal
Formula:SiO2 · nH2O
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Opal data
Locality Data:Click here to view Faith clay pit, Steamboat Springs Mining District, Washoe County, Nevada, USA
Data Identifiers
Mindat Occurrence Record ID:286241
Long-form Identifier:1:3:286241:5
GUID (UUID V4):0
Nearest other occurrences of Opal
0.7km (0.5 miles) ⓘSteamboat Springs mine (silica pit), Steamboat Springs Mining District, Washoe County, Nevada, USA
2.0km (1.3 miles) ⓘSteamboat Hot Springs, Steamboat Springs Mining District, Washoe County, Nevada, USA
13.6km (8.4 miles) ⓘWashington Hill mine, Castle Peak Mining District, Storey County, Nevada, USA
25.2km (15.7 miles) ⓘBrunswick Canyon, Delaware Mining District, Carson City, Nevada, USA
37.6km (23.3 miles) ⓘJulietta prospect, Delaware Mining District, Pine Nut Mountains, Douglas County, Nevada, USA
42.8km (26.6 miles) ⓘTalapoosa mine, Talapoosa Mining District, Lyon County, Nevada, USA
43.0km (26.7 miles) ⓘDeLongchamps prospect, Ramsey Mining District, Lyon County, Nevada, USA
57.0km (35.4 miles) ⓘRed Bluff mine, Pyramid Mining District, Washoe County, Nevada, USA
57.8km (35.9 miles) ⓘLowary mine (Maue-Mcray mine), Pyramid Mining District, Washoe County, Nevada, USA
57.9km (36.0 miles) ⓘLong Valley Quarries (Lassenite Industries), Red Rock, Lassen County, California, USA
References
Castor, Stephen B.; Ferdock, Gregory C. (2004) Minerals of Nevada. Special Publication 31. Nevada Bureau of Mines and Geology 512pp.
 
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