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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Silica from
Unnamed Silica occurrence [2] (Unnamed Quartz occurrence), Afton, San Bernardino County, California, USA


Locality type:Occurrence
Classification
Species:'Silica' (not an IMA approved species)
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Silica data
Locality Data:Click here to view Unnamed Silica occurrence [2] (Unnamed Quartz occurrence), Afton, San Bernardino County, California, USA
Data Identifiers
Mindat Occurrence Record ID:1015149
Long-form Identifier:1:3:1015149:1
GUID (UUID V4):0
Nearest other occurrences of Silica
36.6km (22.8 miles) ⓘUnnamed Silica occurrence [3] (Unnamed Quartz occurrence), Calico, Calico District (Daggett District; Calico-Daggett area), Calico Mts (Calico Hills), San Bernardino County, California, USA
47.5km (29.5 miles) ⓘUnnamed Silica prospect [8], Goldstone, Goldstone Mining District, San Bernardino County, California, USA
48.8km (30.3 miles) ⓘUnnamed Silica occurrence [1], Ord Mountain, Ord Mountains, Ord Mining District, San Bernardino County, California, USA
49.3km (30.7 miles) ⓘSilica No. 1 Mine, Goldstone, Goldstone Mining District, San Bernardino County, California, USA
55.5km (34.5 miles) ⓘUnnamed Silica quarry [5] (Southern Pacific Company property), Mud Hills (Strontium Hills), Barstow Mining District, San Bernardino County, California, USA
59.5km (37.0 miles) ⓘWells Hill prospect, Williams Well, San Bernardino County, California, USA
62.1km (38.6 miles) ⓘSection 20 Hills deposits, Daggett Ridge, Belleville Mining District, San Bernardino County, California, USA
73.8km (45.9 miles) ⓘUnnamed Quartz quarry [3], Opal Mountain, San Bernardino County, California, USA
78.1km (48.5 miles) ⓘAtlas Fire Brick Company Ganister Mine (Kennedy), Hodge, San Bernardino County, California, USA
78.2km (48.6 miles) ⓘUnnamed Silica prospect [7], Columbia Mountain, Kelso District, San Bernardino County, California, USA
References
(2005) Mineral Resources Data System (MRDS), US Geological Survey.
 
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