Gold Districts of California
Bulletin 193 California Division of Mines and Geology 1976
Table of Contents
The Sweet Oil "diggings" in southwestern Plumas County about eight miles north of La Pone were mined by hydraulicking years ago. The gravel deposits are believed to be located on a branch of the Tertiary La Porte channel. Bedrock is slate, and to the south the gravels are capped by andesite and basalt.
Turner, H.W., 1898, Bidwell Bar folio: U.S. Geol. Survey Geol. Atlas of the U.S., folio 43, 6 pp.
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