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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Howieite from
Laytonville Quarry, Laytonville, Coastal Range, California, USA


06685130017271923871275.jpg
Howieite

Laytonville Quarry, Laytonville, Coastal Range, California, USA
07870620017272011194785.jpg
Howieite

Laytonville Quarry, Laytonville, Coastal Range, California, USA
02238260017272011219711.jpg
Howieite

Laytonville Quarry, Laytonville, Coastal Range, California, USA
02394290017272011229839.jpg
Howieite

Laytonville Quarry, Laytonville, Coastal Range, California, USA
06685130017271923871275.jpg
Howieite

Laytonville Quarry, Laytonville, Coastal Range, California, USA
08936310017363922214894.jpg
Howieite

Laytonville Quarry, Laytonville, Coastal Range, California, USA
02238260017272011219711.jpg
Howieite

Laytonville Quarry, Laytonville, Coastal Range, California, USA
01900380017363922228037.jpg
Howieite

Laytonville Quarry, Laytonville, Coastal Range, California, USA
06685130017271923871275.jpg
Howieite

Laytonville Quarry, Laytonville, Coastal Range, California, USA
07870620017272011194785.jpg
Howieite

Laytonville Quarry, Laytonville, Coastal Range, California, USA
02238260017272011219711.jpg
Howieite

Laytonville Quarry, Laytonville, Coastal Range, California, USA
00633530017363922232845.jpg
Howieite

Laytonville Quarry, Laytonville, Coastal Range, California, USA
Locality type:Quarry
Classification
Species:Howieite
Formula:Na(Fe2+,Fe3+,Al,Mg)12(Si6O17)2(O,OH)10
Confirmation
Validity:Valid - Type Locality
Associated Minerals Based on Photo Data:
Zussmanite2
Riebeckite1
Stilpnomelane1
Pyrite1
Pumpellyite-(Mg)1
Spessartine1
Data
Mineral Data:Click here to view Howieite data
Locality Data:Click here to view Laytonville Quarry, Laytonville, Coastal Range, California, USA
Photo GalleryView Gallery (16 photos)
Data Identifiers
Mindat Occurrence Record ID:58476
Long-form Identifier:1:3:58476:0
GUID (UUID V4):0
Nearest other occurrences of Howieite
26.8km (16.7 miles) ⓘCovelo, Round Valley, Coastal Range, California, USA
References
 
and/or  
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