| Locality type: | Mine |
| Classification |
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| Species: | Opal |
| Formula: | SiO2 · nH2O |
| Confirmation |
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| Validity: | Confirmed |
| Confirmation Methods: | Visually Identified |
| Data |
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| Mineral Data: | Click here to view Opal data |
| Locality Data: | Click here to view Last Chance Mine (1907 Mine), Casey Hill, Courtland, Turquoise Mining District (Courtland-Gleeson Mining District), Cochise County, Arizona, USA |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 907237 |
| Long-form Identifier: | 1:3:907237:4 |
| GUID (UUID V4): | 5aee83d0-6587-44ad-a544-51a96f3efb86 |
| Nearest other occurrences of Opal |
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|
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| 0.5km (0.3 miles) | ⓘMaid of Sunshine Mine, Turquoise Mining District (Courtland-Gleeson Mining District), Cochise County, Arizona, USA |
| 15.6km (9.7 miles) | ⓘFesterling Mine (Elsicor Mine; Cora Mine), Black Diamond Peak, Middle Pass Mining District, Cochise County, Arizona, USA |
| 19.9km (12.4 miles) | ⓘSan Juan Mine (San Juan group; Gordon Mine; Mann adit; Sulphide adit; Silver adit), Gordon Camp, Middle Pass Mining District, Cochise County, Arizona, USA |
| 21.2km (13.2 miles) | ⓘUnnamed Cu-Ag prospect, Middle Pass Mining District, Cochise County, Arizona, USA |
| 24.5km (15.2 miles) | ⓘEmpire Mine, Tombstone Mining District, Cochise County, Arizona, USA |
| 24.7km (15.4 miles) | ⓘGrand Central Mine, Contention-Grand Central Mine group, Tombstone Mining District, Cochise County, Arizona, USA |
| 25.9km (16.1 miles) | ⓘLucky Cuss Mine, Tombstone Mining District, Cochise County, Arizona, USA |
| 30.0km (18.6 miles) | ⓘMontezuma Mine, Tombstone Mining District, Cochise County, Arizona, USA |
| 34.7km (21.5 miles) | ⓘGallagher Vanadium & Rare Minerals Corp Mine, Tombstone Mining District, Cochise County, Arizona, USA |
| 37.8km (23.5 miles) | ⓘCenturion Mine, Centurion, Cochise Mining District, Cochise County, Arizona, USA |
| References |
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Last Chance Mine, Casey Hill, Courtland, Turquoise Mining District, Cochise County, Arizona, USA