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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Cymrite from
Road West of the Pacheco Pass summit, Pacheco Pass, Santa Clara County, California, USA


03448310017368503456259.jpg
Cymrite, etc.

Road West of the Pacheco Pass summit, Pacheco Pass, Santa Clara County, California, USA
03448310017368503456259.jpg
Cymrite, etc.

Road West of the Pacheco Pass summit, Pacheco Pass, Santa Clara County, California, USA
03630600017272011779309.jpg
Cymrite, etc.

Road West of the Pacheco Pass summit, Pacheco Pass, Santa Clara County, California, USA
Classification
Species:Cymrite
Formula:BaAl2Si2(O,OH)8 · H2O
Comments:Occurs with inclusions of lawsonite as veinlets in jadeite graywacke near the W end only of the serpentine body exposed on the road.
Confirmation
Validity:Believed Valid
Associated Minerals:
Associates:Jadeite
Lawsonite
Associated Minerals Based on Photo Data:
Albite1
Lawsonite1
Data
Mineral Data:Click here to view Cymrite data
Locality Data:Click here to view Road West of the Pacheco Pass summit, Pacheco Pass, Santa Clara County, California, USA
Photo GalleryView Gallery (2 photos)
Data Identifiers
Mindat Occurrence Record ID:644262
Long-form Identifier:1:3:644262:0
GUID (UUID V4):0
References
Essene, E. J. (1967) An occurrence of cymrite in the Franciscan formation, California. American Mineralogist, 52 (11-12) 1885-1889
Pemberton, H. Earl (1983) Minerals of California. Van Nostrand Reinhold Company Inc.
Dunning G.E., Walstrom R.E., Lechner W. (2018) Barium Silicate Mineralogy of the Western Margin, North American Continent, Part 1: Geology, Origin, Paragenesis and Mineral Distribution from Baja California Norte Mexico, Western Canada and Alaska U.S.A. Bay Area Mineralogists Bulletin: 19(5), 70 pages.
 
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