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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Ankerite from
Mountain Pass Mine, Mountain Pass, Mountain Pass District, Clark Mts (Clark Mountain Range), San Bernardino County, California, USA


Locality type:Mine
Classification
Species:Ankerite
Formula:Ca(Fe2+,Mg)(CO3)2
Comments:Includes ferroan material.
Colour:White to cream
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Ankerite data
Locality Data:Click here to view Mountain Pass Mine, Mountain Pass, Mountain Pass District, Clark Mts (Clark Mountain Range), San Bernardino County, California, USA
Data Identifiers
Mindat Occurrence Record ID:67398
Long-form Identifier:1:3:67398:5
GUID (UUID V4):0
Localities for Ankerite in this Region
Birthday Mine, Mountain Pass Mine, Mountain Pass, Mountain Pass District, Clark Mts (Clark Mountain Range), San Bernardino County, California, USA
Nearest other occurrences of Ankerite
1.3km (0.8 miles) ⓘBirthday Mine, Mountain Pass Mine, Mountain Pass, Mountain Pass District, Clark Mts (Clark Mountain Range), San Bernardino County, California, USA
7.7km (4.8 miles) ⓘMohawk Mine, Mohawk Hill, Clark Mountain District (Clark District), Clark Mts (Clark Mountain Range), San Bernardino County, California, USA
49.8km (31.0 miles) ⓘBeck Mine [1] (Beck deposits; Kingston Iron deposit; Iron Gossam; Beck Mine; Gossan No. 1; 2 & 5 claims), Kingston Peak, Kingston Range District, Kingston Range, San Bernardino County, California, USA
References
Olson, Jerry Chipman, Shawe, D.R., Pray, L.C., Sharpe, W.N., and Hewlett, D.F. (1954), Geology of the rare-earth deposits of the Mountain Pass district, San Bernardino County California, USGS 261 pp.: 33
Pemberton, H. Earl (1983) Minerals of California. Van Nostrand Reinhold Company Inc.
 
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