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Howieite Image

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 Howieite

Large Howieite Image

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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