Howieite Image
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Howieite
Mineral:
Howieite
:
Na(Fe++,Mn++)10(Fe,Al)2Si12O31(OH)13
Comments:
Black vitreous radiating crystalline howieite.
Location:
Longvale Quarry, Mendocino County, California, USA.
Scale:
See Photo.
Copyright:
©
Jeff Weissman / Photographic Guide to Mineral Species
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