Latitude: 38°10'11"N
Longitude: 122°40'49"W
A jade mine located in the NW¼SW¼ sec. 19, T5N, R7W MDM, on the E side of Massa Hill, on the Vonson Ranch, about 1 mile SW of Union and 8.0 km (5 miles) SSW of Petaluma (Sonoma County).
References
California Journal of Mines and Geology (1955): 51(3) (July): 259, 280, Pl. 4.
Chesterman, C.W. (1951), Nephrite in Marin County, California: (abstract) Geological Society of America Bulletin: 62: 1517; …California Division Mines Special Report 10-B.
Yoder, Hatten S., Jr. & Charles W. Chesterman (1951), Jadeite of San Benito County, California. California Division of Mines, Special Report 10-C.
Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 66, 309.
Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 390, 397.
Mineral List
3 entries listed. 1 valid mineral.
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