| 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 Unnamed prospects near Girvin Tank (PR-PR-T21-1), Presidio County, Texas, USA |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 202557 |
| Long-form Identifier: | 1:3:202557:5 |
| GUID (UUID V4): | 0 |
| Nearest other occurrences of Chalcedony |
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| 46.2km (28.7 miles) | ⓘUnnamed prospect (EM-PR-U24-6), Solitario, Brewster County, Texas, USA |
| 48.4km (30.1 miles) | ⓘFresno mine (Buena Suerte), Presidio County, Texas, USA |
| 50.7km (31.5 miles) | ⓘSingleton Ranch, Presidio County, Texas, USA |
| 52.2km (32.4 miles) | ⓘAgua Fria Ranch, Brewster County, Texas, USA |
| 62.5km (38.8 miles) | ⓘLittle 38 Mine, Brewster County, Texas, USA |
| 69.7km (43.3 miles) | ⓘNeedle Peak (Sierra Aguja), Brewster County, Texas, USA |
| 75.8km (47.1 miles) | ⓘChristmas Mountain deposit (Piedra Azul), Christmas Mountains, Brewster County, Texas, USA |
| 79.2km (49.2 miles) | ⓘMarfa, Presidio County, Texas, USA |
| 81.7km (50.8 miles) | ⓘCathedral Mountain quadrangle, Davis Mountains, Brewster County, Texas, USA |
| 83.8km (52.0 miles) | ⓘWoodward Ranch, Alpine, Brewster County, Texas, USA |
| References |
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