| Locality type: | Prospect |
| Classification |
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| Species: | Quartz var: Chalcedony |
| Formula: | SiO2 |
| Confirmation |
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| Validity: | Believed Valid |
| Data |
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| Mineral Data: | Click here to view Chalcedony data |
| Locality Data: | Click here to view Clark prospect, Marathon, Brewster County, Texas, USA |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 202048 |
| Long-form Identifier: | 1:3:202048:8 |
| GUID (UUID V4): | 0 |
| Nearest other occurrences of Chalcedony |
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| 23.6km (14.6 miles) | ⓘUnnamed manganese occurrence, Roberts Ranch, Marathon, Brewster County, Texas, USA |
| 34.8km (21.6 miles) | ⓘWoodward Ranch, Alpine, Brewster County, Texas, USA |
| 40.7km (25.3 miles) | ⓘCathedral Mountain quadrangle, Davis Mountains, Brewster County, Texas, USA |
| 58.4km (36.3 miles) | ⓘKokernot o6 Ranch, Jeff Davis County, Texas, USA |
| 76.9km (47.8 miles) | ⓘMarfa, Presidio County, Texas, USA |
| 81.0km (50.3 miles) | ⓘSingleton Ranch, Presidio County, Texas, USA |
| 81.6km (50.7 miles) | ⓘChristmas Mountain deposit (Piedra Azul), Christmas Mountains, Brewster County, Texas, USA |
| 82.0km (51.0 miles) | ⓘAgua Fria Ranch, Brewster County, Texas, USA |
| 95.5km (59.4 miles) | ⓘUnnamed prospect (EM-PR-U24-6), Solitario, Brewster County, Texas, USA |
| References |
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