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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Allanite Group from
Henshaw Quarry, Bloomington, San Bernardino County, California, USA


Locality type:Quarry
Classification
Species:'Allanite Group' (not an IMA approved species)
Formula:(A12+REE3+)(M13+M23+M32+)O[Si2O7][SiO4](OH)
Comments:Occurs as crystals to 1 cm.
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Allanite Group data
Locality Data:Click here to view Henshaw Quarry, Bloomington, San Bernardino County, California, USA
Data Identifiers
Mindat Occurrence Record ID:686192
Long-form Identifier:1:3:686192:6
GUID (UUID V4):0
Nearest other occurrences of Allanite Group
12.1km (7.5 miles) ⓘNew City Quarry (Victoria Avenue quarry), Riverside, Riverside County, California, USA
46.8km (29.1 miles) ⓘSt. Patrick's group (St. Patrick claim; Alger Creek claims), Forest Falls (Fallsvale; Fallsville; Forest Home), San Bernardino County, California, USA
48.8km (30.3 miles) ⓘBundy-Murrieta deposit, Menifee, Menifee Mining District (Auld Mining District), Riverside County, California, USA
77.7km (48.3 miles) ⓘLucky Seven claim, Rimrock, Morongo District (Lone Valley District), San Bernardino County, California, USA
79.4km (49.3 miles) ⓘUnnamed REE prospect, N. S. Weaver Ranch, Pala, Pala Mining District, San Diego County, California, USA
81.8km (50.8 miles) ⓘBlack Dog prospect (Black Dog claim), Rock Corral, Landers, San Bernardino County, California, USA
90.3km (56.1 miles) ⓘUnnamed REE occurrence, Rock Corral, Landers, San Bernardino County, California, USA
95.3km (59.2 miles) ⓘPacoima Canyon, Los Angeles 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Cooney, R.L. (1956), The mineralogy of the Jensen and Henshaw quarries near Riverside, California: Unpublished Master’s thesis, University of California at Los Angeles: 19
Pemberton, H. Earl (1983) Minerals of California. Van Nostrand Reinhold Company Inc.
 
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