Laytonville Quarry, Laytonville, Coastal Range, Mendocino Co., California, USA

Latitude: 39°37'5"N
Longitude: 123°27'47"W

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A road metal quarry located in sec. 6, T20N, R14W (MD), about 5 miles S of Laytonville.

Specimens are commonly labeled as being from "Longvale" or "Longvale Quarry"

Mineralization is in blueschist metasediments of the Franciscan Formation.

References

Agrell, S.O. (1964), Deerite, howieite, and zussmanite, three new minerals from the Franciscan of the Laytonville district, Mendocino County, California (title only), American Mineralogist: 49: 1507.

Agrell, S.O., M.G. Brown & McKie (1965), Deerite, howieite and zussmanite, three new minerals from the Franciscan of the Laytonville district, Mendocino County, California: American Mineralogist: 50: 278.

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.

Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 70, 167, 220, 239, 353, 394, 493.

Rice, S.J. (1966) A new mineral locality. California Division of Mines and Geology Mineral Information Service: 19: 7.

Onucki, H. and Ernst, W.G. (1969) Coexisting sodic amphiboles and sodic pyroxenes from blueschist facies metamorphic rocks. Mineralogical Association of America Special Paper 2: 242, 245.

Pemberton, H. Earl (1983), Minerals of California: 72, 212, 221, 390-391, 392, 395, 403, 426, 432, 487, 492, 496.

Mineral List

23 entries listed. 18 valid minerals. 3 type localities (valid minerals).

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Current server date and time: 28th Sep 2011 00:54:40