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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Choloalite from
Library Mine, Otto Mountain, Baker, Soda Mountains, Silver Lake Mining District, San Bernardino County, California, USA


Locality type:Mine
Classification
Species:Choloalite
Formula:(Cu,Sb)3(Pb,Ca)3(TeO3)6Cl
Comments:This specimen did not match the RRUFF spectrum (of poor quality), instead it matched the Delamar mine choloalite spectrum from the CalTech library, with much better peaks. That material was of ideal pure composition, no Ca or Sb impurities.
Habit:Tiny shard
Colour:Dark green
Confirmation
Validity:Confirmed
Confirmation Methods:Raman Spectroscopy
Confirmation Details:Raman Spectroscopy: Where Tested and Reference ID - Caltech Mineralogy Lab
Data
Mineral Data:Click here to view Choloalite data
Locality Data:Click here to view Library Mine, Otto Mountain, Baker, Soda Mountains, Silver Lake Mining District, San Bernardino County, California, USA
Data Identifiers
Mindat Occurrence Record ID:1985111
Long-form Identifier:1:3:1985111:4
GUID (UUID V4):0
References
Marek Chorazewicz (2026) Personal collection, confirmed by Raman with Bob Housley at CalTech GeoPlanetary lab.Identification: Raman Spectroscopy
 
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