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Howieite from
Laytonville Quarry (Longvale; Longvale Quarry), Laytonville, Coastal Range, Mendocino Co., California, USA

Locality type:Quarry
Classification
Species:Howieite
Formula:Na(Fe,Mn)10(Fe,Al)2Si12O31(OH)13
Confirmation
Validity:Valid - Type Locality
References
References:Agrell, S.O. (1964), Deerite, howieite, and zussmanite, three new minerals from the Franciscan of the Laytonville district, Mendocino County, California (title only), Am.Min.: 49; CM 28 (1990), 855; HB2/1 (1995); Wood, R. W. (1979) The iron-rich blueschist facies minerals: 2. Howieite. Mineralogical Magazine 43:363-370.; Robert Muir Wood (1982) The Laytonville Quarry (Mendocino County California) Exotic Block: Iron-rich Blueschist-Facies Subduction-Zone Metamorphism. Mineralogical Magazine 45:87-99.
Associated Minerals Based on Photo Data:
Zussmanite2 photos of Howieite associated with Zussmanite at this locality.
Pumpellyite-(Mg)1 photo of Howieite associated with Pumpellyite-(Mg) at this locality.
Data
Mineral Data:Click here to view Howieite data
Locality Data:Click here to view Laytonville Quarry (Longvale; Longvale Quarry), Laytonville, Coastal Range, Mendocino Co., California, USA
Photo GalleryView Gallery (9 photos)
Nearest other occurrences of Howieite
0.7km (0.4 miles) Unnamed Howieite-Deerite-Zussmanite occurrence [1], Longvale, Coastal Range, Mendocino Co., California, USA
26.8km (16.7 miles) Covelo, Round Valley, Coastal Range, Mendocino Co., California, USA
 
矿物 and/or 产地  
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