Abbott
California
Unconfirmed Mercury
Historical mapped workings available
Opal — reported minerals
Reported mineral means the material appears in source datasets associated with a locality. It does not mean it was the primary mined commodity.
- Mines with this mineral reported
- 95
Related mined commodities
Use commodity pages for production-oriented discovery. Mineral pages stay factual about reported occurrences.
Catalog records
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B & B
Nevada
Unconfirmed Mercury
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B and B Mine
Nevada
Unconfirmed Mercury
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Buckskin National Mine
Nevada
Unconfirmed Gold
Documented adit evidence
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Buckskin National Mine
Nevada
Unconfirmed Gold
Documented adit evidence
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Buckskin National Mine
Nevada
Unconfirmed Gold
Documented adit evidence
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Buckskin National Project
Nevada
Unconfirmed Gold
Documented adit evidence
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Buckskin Peak Mine
Nevada
Unconfirmed Mercury
Historical mapped workings available
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Butte Quicksilver Mine
Nevada
Unconfirmed Mercury
Historical mapped workings available
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California Kieselguhr Co.
California
Unconfirmed Diatomite
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Cato Sells Monument Mine
Arizona
Unconfirmed Uranium
Historical mapped workings available
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Centurion Mine
Arizona
Unconfirmed Copper
Documented shaft evidence
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Cherry Hill Deposit
California
Unconfirmed Mercury
Historical mapped workings available
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Cordero Mine
Nevada
Unconfirmed Mercury
Documented shaft evidence
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Cordero Mine
Nevada
Unconfirmed Mercury
Documented shaft evidence
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Corona
California
Unconfirmed Mercury
Documented adit evidence
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Darius Mine
Arizona
Unconfirmed Manganese
Historical mapped workings available
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Darius Mine
Arizona
Unconfirmed Manganese
Historical mapped workings available
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Disaster Peak Property
Nevada
Unconfirmed Mercury
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Dixie Comstock Mine
Nevada
Unconfirmed Gold
Documented shaft/adit evidence
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Elgin
California
Unconfirmed Mercury
Documented adit evidence
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Elgin
California
Unconfirmed Mercury
Documented adit evidence
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Empire Mine
Arizona
Unconfirmed Lead
Documented shaft evidence
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Empire Mine
Arizona
Unconfirmed Lead
Documented shaft evidence
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Estrella Mine
California
Unconfirmed Chromium
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Estrella Mine
California
Unconfirmed Chromium
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Estrella Mine
California
Unconfirmed Chromium
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Fat Jack Mine
Arizona
Unconfirmed Gold
Documented adit evidence
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Florida Canyon Gold Mine
Nevada
Unconfirmed Gold
Historical mapped workings available
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Gilliam Mine
California
Unconfirmed Chromium
Historical mapped workings available
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Governor Mine
Nevada
Unconfirmed Mercury
Documented adit evidence
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Grand Central Mine
Arizona
Unconfirmed Gold
Historical mapped workings available
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Great Western
California
Unconfirmed Mercury
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Grey Eagle Mine
California
Unconfirmed Chromium
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Harvey Mine
Nevada
Unconfirmed Mercury
Historical mapped workings available
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Helen
California
Unconfirmed Mercury
Documented adit evidence
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Horseshoe Claim
California
Unconfirmed Iron
Historical mapped workings available
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Hudson Bay Qtz
California
Unconfirmed Gold
Historical mapped workings available
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Indian Springs
Nevada
Unconfirmed Tungsten
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Kellett
California
Unconfirmed Mercury
Documented adit evidence