| Classification |
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| Species: | Opal |
| Formula: | SiO2 · nH2O |
| Comments: | Occurs in a 6 inch (15 cm) vein in andesite and rhyolite. |
| Colour: | Amber-brown, yellowish-brown |
| Confirmation |
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| Validity: | Believed Valid |
| Associated Minerals: |
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| Associates: | Chalcedony
Opal-AN
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| Data |
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| Mineral Data: | Click here to view Opal data |
| Locality Data: | Click here to view Southwest of Salero, Grosvenor Hills, Salero area, Tyndall Mining District, Santa Cruz County, Arizona, USA |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 274998 |
| Long-form Identifier: | 1:3:274998:3 |
| GUID (UUID V4): | 7647b2e5-3a6e-4c5e-a83d-9e5afac99af3 |
| References |
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| Reference Search (possible matching items) |
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 | | Report (volume) | | DEPARTMENT OF THE INTERIOR UNITED STATES GEOLOGICAL SURVEY GEORGE OTIS SMITH, DiRECTOtt BTJI/LETIN...BTJI/LETIN 582 MINERAL DEPOSITS OF THE SANTA RITA AND PATAGONIA MOUNTAINS ARIZONA BY FRANK C. SCHRADER WITH...________________ Location and means of approach ____________ Settlements and means of communication-__________________...17 Climate and vegetation. 18 _._ History of mining and present conditions___________________ 20...__ ______-_____________ Mountains _ __________ _ Santa Rita and Patagonia ranges ______ _ Empire Mountains |
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