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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Quartz from
East Park Reservoir, Stonyford, Coast Ranges, Colusa County, California, USA


Locality type:Reservoir
Classification
Species:Quartz
Formula:SiO2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Quartz data
Locality Data:Click here to view East Park Reservoir, Stonyford, Coast Ranges, Colusa County, California, USA
Data Identifiers
Mindat Occurrence Record ID:985226
Long-form Identifier:1:3:985226:6
GUID (UUID V4):0
Nearest other occurrences of Quartz
19.9km (12.4 miles) ⓘBurgett prospect, Sugarloaf, Coast Ranges, Colusa County, California, USA
28.5km (17.7 miles) ⓘJuniper Mine, Wilbur Springs, Sulphur Creek Mining District (Sulfur Creek Mining District; Wilbur Springs Mining District), Coast Ranges, Colusa County, California, USA
29.1km (18.1 miles) ⓘPetray Mine, Wilbur Springs, Sulphur Creek Mining District (Sulfur Creek Mining District; Wilbur Springs Mining District), Coast Ranges, Colusa County, California, USA
34.2km (21.2 miles) ⓘCherry Hill deposit, Wilbur Springs, Sulphur Creek Mining District (Sulfur Creek Mining District; Wilbur Springs Mining District), Coast Ranges, Colusa County, California, USA
40.2km (25.0 miles) ⓘSulphur Bank Mine (Sulfur Bank Mine; Sulphur Bank deposits), Clear Lake Oaks, Sulphur Creek Mining District (Sulfur Creek Mining District; Wilbur Springs Mining District), Lake County, California, USA
56.9km (35.4 miles) ⓘManganese Peak group (Anti-Hitler; Anti-Mussolina), Dead Rabbit Lake, Tehama County, California, USA
57.4km (35.7 miles) ⓘThomas Mine (Thomas deposit; Thomas Round Mountain; North Thomas Mine; Round Mountain), Redwood Valley, Mendocino County, California, USA
57.6km (35.8 miles) ⓘMcLaughlin Mine (Manhattan Mine), Knoxville, Knoxville Mining District, Napa County, California, USA
58.4km (36.3 miles) ⓘWild Devil Mine (Waldteufel; Waldteufel Mine), Potter Valley area, Coastal Range, California, USA
59.4km (36.9 miles) ⓘRedington Mine (Boston Mine; Knoxville Mine; Excellsior Mine), Knoxville, Knoxville Mining District, Napa County, California, USA
References
Johnson, H. C. 1971 Western Gem Hunters Atlas, 11th Edition: Cy Johnson & son, Susanville, Calif., 95 p.
 
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