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


Locality type:Mountain
Classification
Species:Aegirine
Formula:NaFe3+Si2O6
Confirmation
Validity:Believed Valid
Associated Minerals:
Associates:Crossite
Quartz
Data
Mineral Data:Click here to view Aegirine 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:677366
Long-form Identifier:1:3:677366:3
GUID (UUID V4):0
Nearest other occurrences of Aegirine
74.3km (46.2 miles) ⓘCrestmore quarries, Crestmore, Jurupa Valley, Riverside County, California, USA
References
its nature and origin: University of California, Department of Geological Sciences Bulletin 15: 186
Woodford, A.O. (1925), The San Onofre breccia
Pemberton, H. Earl (1983) Minerals of California. Van Nostrand Reinhold Company Inc.
 
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