Howieite Image

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Mineral News was founded some twenty years ago and has developed a following of
avid mineral collectors seeking timely information about new finds and other items
of interest to the collector community. Articles are solicited from collector and scientific authors.

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:

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