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Howieite - RRUFF Database: Raman, X-ray, Infrared, and Chemistry

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 view
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 view