| Locality type: | Mine |
| Classification |
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| Species: | Opal |
| Formula: | SiO2 · nH2O |
| Confirmation |
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| Validity: | Believed Valid |
| Data |
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| Mineral Data: | Click here to view Opal data |
| Locality Data: | Click here to view Good Hope Mine (Mammoth Good Hope Mine; Mammoth-Good Hope Mine; Mammoth Chimney Mine), Vulcan, Vulcan Mining District (Cebolla Mining District; Domingo Mining District), Gunnison County, Colorado, USA |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 490258 |
| Long-form Identifier: | 1:3:490258:4 |
| GUID (UUID V4): | 0 |
| Nearest other occurrences of Opal |
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| 13.1km (8.1 miles) | ⓘAlexite Manganese Mine, White Earth Mining District (Powderhorn Mining District), Gunnison County, Colorado, USA |
| 41.5km (25.8 miles) | ⓘGunnison River Gorge, Gunnison County, Colorado, USA |
| 44.8km (27.8 miles) | ⓘSlumgullion Earthflow (Slumgullion mud flow), Hinsdale County, Colorado, USA |
| 51.9km (32.3 miles) | ⓘCreede Formation, Creede Mining District, Mineral County, Colorado, USA |
| 61.7km (38.4 miles) | ⓘLa Garita Creek, Saguache County, Colorado, USA |
| 79.7km (49.5 miles) | ⓘTrout Creek Sulfur Deposit, Mineral County, Colorado, USA |
| 81.1km (50.4 miles) | ⓘDel Norte Thunder Egg beds, Saguache County, Colorado, USA |
| 82.8km (51.4 miles) | ⓘPoncha Hot Springs, Poncha Pass Area, Chaffee County, Colorado, USA |
| 84.4km (52.4 miles) | ⓘHortense Hot Spring, Chalk Creek District, Chaffee County, Colorado, USA |
| 85.3km (53.0 miles) | ⓘMount Princeton Hot Spring, Chalk Creek District, Chaffee County, Colorado, USA |
| References |
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