Lost California Treasure

Original Sixteen-to-One Mine

One of the most famous and longest-operating gold mines in California. Discovered in 1896, it is legendary for its extremely high-grade gold-in-quartz specimen ore. Focuses on locating 'pockets' where gold occurred in massive, solid concentrations. In 1993, the mine yielded a single pocket containing 1,500 ounces of gold.

Record typelost mine
LocationAlleghany, Sierra County (on Pliocene Ridge)
Probability indexHigh
Land statusPrivate Property (Strictly Restricted; active mining claim/patented ground)
Research coordinates39.4656, -120.8439
SourceCalifornia Division of Mines and Geology Bulletin 193 (Alleghany District) / Mindat Locality #10411

Field Research Notes

The mine is located on active patented mining ground owned by the Sixteen to One company. Trespassing on the property or attempting to enter the portals is highly dangerous and illegal. Visitors can view the historic town of Alleghany and learn about the mine's history at the local museum.

Recommended Gear

Historical map booklet, Camera, Sturdy boots

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