The Hart or Castle Mountain mining district is in northeastern San Bernardino County about 15 miles east of Ivanpah near the Nevada border. Gold was discovered here in 1907, and the area flourished for a few years. For a time it was served by the Santa Fe Railroad's branch to Searchlight, Nevada. There was some activity again during the 1930s. The principal sources of gold were the Oro Belle, Valley View, and Hart Consolidated mines. The ore deposits consist of breccia zones along which the wall rock is silicified. The deposits contain pyrite and native gold in small grains and wires. Country rock consists of rhyolite flows, tuff, and breccia of late Tertiary age.
Hart-Castle Mountain District, Calif. Mine Locations
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Quick Facts
- Located in California.
- 760 claims are active
- 2 claims are closed
- 2 mines are Prospects
- 7 mines are Producers
California's Hart-Castle Mountain Mining District includes 762 nearby claims—760 active and 2 closed—and 9 nearby mines—2 prospects and 7 producers.
Claims Summary
in Hart-Castle Mountain Mining District, California
- 760 Active
- 2 Closed
Mines Summary
in Hart-Castle Mountain Mining District, California
- 2 Prospects
- 7 Producers
Mining Claim News From The Diggings™
Learn more about the Bureau of Land Management, Public Land Survey System, and mining claims.
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Understanding Claim Ownership
We receive lots of emails from people who find their name or a relative’s name on our site and want to know if this means they have some right to the land listed under that name.
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Understanding BLM Administrative Areas
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Understanding Location Data
Mine handled by the Bureau of Land Management are not mapped by latitude and longitude, instead, these mines harken back to the Public Land Survey System.
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Understanding Townships
A “township” can refer to two different things. Both are part of the PLSS measurement system but have different uses.
