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| Howieite |
R060031 |
Na(Fe2+,Fe3+,Al,Mg)12(Si6O17)2(O,OH)10 |
University of Arizona Mineral Museum 5923 |
Laytonville quarry, near Longvale, California, USA |
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|
| Howieite |
R061009 |
Na(Fe2+,Fe3+,Al,Mg)12(Si6O17)2(O,OH)10 |
Michael Scott S101047 |
Quarry on north side of U.S. 101, 5 miles south of Laytonville, Mendocino County, California, USA |
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