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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Epidote from
Henshaw Quarry, Bloomington, San Bernardino County, California, USA


Locality type:Quarry
Classification
Species:Epidote
Formula:(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Comments:Common in pegmatites and contact zones as crystals to 1 cm and large cleavable masses.
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Epidote data
Locality Data:Click here to view Henshaw Quarry, Bloomington, San Bernardino County, California, USA
Data Identifiers
Mindat Occurrence Record ID:686194
Long-form Identifier:1:3:686194:0
GUID (UUID V4):0
Nearest other occurrences of Epidote
3.2km (2.0 miles) ⓘJensen Quarry, Jurupa Mountains, Jurupa Valley, Riverside County, California, USA
3.8km (2.4 miles) ⓘCommercial Quarry, Sky Blue Hill, Crestmore quarries, Crestmore, Jurupa Valley, Riverside County, California, USA
6.9km (4.3 miles) ⓘOld City Quarry (City Quarry; North Hill Quarry; Quarry Hill; Fairmount), Riverside, Riverside County, California, USA
12.5km (7.8 miles) ⓘBox Springs Mountains, Riverside County, California, USA
18.6km (11.5 miles) ⓘBadger Canyon occurrence, Marshall Peak, San Bernardino, San Bernardino County, California, USA
24.1km (14.9 miles) ⓘCucamonga Mine (Cucamonga Zinc Mine; Blew Jordam Mine), Cucamonga Peak, Lytle Creek District, San Bernardino County, California, USA
29.4km (18.3 miles) ⓘCascade Canyon, San Bernardino County, California, USA
38.9km (24.2 miles) ⓘHeath Canyon flood control channel, Wrightwood, San Bernardino County, California, USA
48.8km (30.3 miles) ⓘBundy-Murrieta deposit, Menifee, Menifee Mining District (Auld Mining District), Riverside County, California, USA
49.7km (30.9 miles) ⓘWhite Knob Quarry, Lucerne Valley, Lucerne Valley Limestone District, San Bernardino County, California, USA
References
Cooney, R.L. (1956), The mineralogy of the Jensen and Henshaw quarries near Riverside, California: Unpublished Master’s thesis, University of California at Los Angeles: 20-21, 28-29, 40
Pemberton, H. Earl (1983) Minerals of California. Van Nostrand Reinhold Company Inc.
 
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