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

Locality type:Quarry
Classification
Species:Muscovite var: Phengite
Formula:KAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
Comments:Crystal layers from a few mm's to about 5 cm thick.
Habit:Small, platelike, comprising layers
Colour:Pale green
Confirmation
Validity:Believed Valid
References
References:Chesterman, C.W. (1966b), Mineralogy of the Laytonville quarry, Mendocino County, California, in: Geology of Northern California: California Division Mines & Geol. Bulletin 190: 503, 506; Pemberton, H. Earl (1983), Minerals of California: 426, 503.
Associated Minerals:
Associates:Pumpellyite-(Mg)
Data
Mineral Data:Click here to view Phengite data
Locality Data:Click here to view Laytonville Quarry (Longvale; Longvale Quarry), Laytonville, Coastal Range, Mendocino Co., California, USA
 
矿物 and/or 产地  
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