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Howieite
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| 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 | ||||
| Counter: | This Image has been shown 12617 times | ||||
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