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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Crossite from
West of San Onofre Mountain, San Onofre Mountain, Marine Corps Base Camp Pendleton, San Diego County, California, USA


Locality type:Mountain
Classification
Species:'Crossite' (not an IMA approved species)
Confirmation
Validity:Believed Valid
Associated Minerals:
Associates:Aegirine
Quartz
Data
Mineral Data:Click here to view Crossite data
Locality Data:Click here to view West of San Onofre Mountain, San Onofre Mountain, Marine Corps Base Camp Pendleton, San Diego County, California, USA
Data Identifiers
Mindat Occurrence Record ID:677367
Long-form Identifier:1:3:677367:0
GUID (UUID V4):0
Nearest other occurrences of Crossite
22.7km (14.1 miles) ⓘDana Point [cape], Orange County, California, USA
83.1km (51.7 miles) ⓘPoint Fermin, San Pedro, Los Angeles County, California, USA
96.3km (59.8 miles) ⓘMalaga Cove, Palos Verdes Estates, Los Angeles County, California, USA
References
its nature and origin: University of California, Department of Geological Sciences Bulletin 15: 159-280
Woodford, A.O. (1925), The San Onofre breccia
[… (abstract): Geol. Zentralbl., Band 33: 109 (1926)]: 186
Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 309
 
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