| 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 Last Chance Mine (Lower Adit; Kramer Mine; Adit No. 1; Adit No. 2), Browns Canyon Mining District, Chaffee County, Colorado, USA |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 372383 |
| Long-form Identifier: | 1:3:372383:8 |
| GUID (UUID V4): | 8c262aaf-0914-4fba-a867-353b09ad70e7 |
| Nearest other occurrences of Opal |
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| 0.7km (0.5 miles) | ⓘPuzzle mine, Poncha Springs, Browns Canyon Mining District, Chaffee County, Colorado, USA |
| 0.9km (0.5 miles) | ⓘBlue Stone Deposit, Browns Canyon Mining District, Chaffee County, Colorado, USA |
| 1.0km (0.6 miles) | ⓘWhite King Deposit, Browns Canyon Mining District, Chaffee County, Colorado, USA |
| 1.4km (0.9 miles) | ⓘChimney Hill Mine (Morgan Ranch Deposits; Manganese Hill), Browns Canyon Mining District, Chaffee County, Colorado, USA |
| 1.7km (1.1 miles) | ⓘSnowflake Deposit, Browns Canyon Mining District, Chaffee County, Colorado, USA |
| 2.2km (1.3 miles) | ⓘColorado - American Mine (West Vein; Trefone Adit; East Vein; American Shaft; Mill Adit; Branch or Collins Vein), Browns Canyon Mining District, Chaffee County, Colorado, USA |
| 3.0km (1.8 miles) | ⓘAlderman deposit, Browns Canyon Mining District, Chaffee County, Colorado, USA |
| 5.8km (3.6 miles) | ⓘAce High - Jackpot Prospect, Turret Mining District, Chaffee County, Colorado, USA |
| 6.0km (3.7 miles) | ⓘAmerican Flag Mine (Anaconda Mine; Ethel Consolidation Mine; Crete Mine; Holdredge Mine), Turret Mining District, Chaffee County, Colorado, USA |
| 6.2km (3.9 miles) | ⓘSedalia Mine (Sedalia Copper Mine), Sedalia Mining District, Chaffee County, Colorado, USA |
| References |
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