Latitude: 38°32'20"N
Longitude: 123°5'44"W
An occurrence in the NE¼ sec. 17, T8N, R11W, MDM, on Ward Creek about 1.2 km WNW of Cazadero.
NOTE: Coordinates provided are approximate to the center of sec. 17.
References
Borg, Iris Y. (1956), Glaucophane schists and eclogite near Healdsburg, California: Geological Society of America Bulletin 67: 1563-1584.
Coleman, R.G. & D.E. Lee (1963), Glaucophane-bearing metamorphic rocks of the Cazadero area, California: Journal of Petrology: 4: 260.
Lee, Donald Edward, Coleman, R.G., Bastron, H., and Smith, V.C. (1966) A two amphibole glaucophane schist in the Franciscan formation, Cazadero area, California. USGS Professional Paper 550-C: 148, 149, 153, 154.
Essene, E.J. and W.S. Fyfe (1967) Omphacite in California metamorphic rocks. Contributions to Mineralogy and Petrology: 15, 23 pp.: 4.
Coleman, R.G. & J.J. Papike (1968), Alkali amphiboles from the blueshchists of Cazadero, California: Jour. Petr.: 9: 109, 111, 113-118.
Himmelberg, G.R. and Papike, J.J. (1969) Coexisting amphiboles from blueschist facies metamorphic rock. Journal of Petrology: 10: 104-113.
Klein, C. (1969) Two-amphibole assemblages in the system actinolite-hornblende-glaucophane. American Mineralogist: 54: 221, 225.
Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 171, 394, 399, 402, 404, 476, 484.
Oh, C. W., Liou, J. G. and Maruyanma, S. (1991). Low-temperature eclogites and eclogitic schists in Mn-rich metabasites in Ward Creek, California; Mn and Fe effects on transition between blueschist and eclogites. Journal of Petrology: 32: 275-301.
[www.minsocam.org/msa/Handbook/Winchite.PDF.]
Mineral List
13 entries listed. 11 valid minerals.
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