| 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 North Mine (East Wheal Friendship), Devon United Mines, Peter Tavy, West Devon, Devon, England, UK |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 625734 |
| Long-form Identifier: | 1:3:625734:7 |
| GUID (UUID V4): | ce81519c-696d-4b8e-be24-c5b1e82127c8 |
| Nearest other occurrences of Chalcedony |
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| 9.2km (5.7 miles) | ⓘWalkham and Poldice Mine (Wheal Walkham), Buckland Monachorum, West Devon, Devon, England, UK |
| 12.5km (7.8 miles) | ⓘGunnislake Clitters Mine, Clitters United Mines, Gunnislake, Calstock, Cornwall, England, UK |
| 16.4km (10.2 miles) | ⓘNorth Hooe Mine, Tamar Consols (Tamar Mines), Bere Alston Mines, Bere Ferrers, West Devon, Devon, England, UK |
| 25.1km (15.6 miles) | ⓘHaytor Mine, Ilsington, Teignbridge, Devon, England, UK |
| 28.2km (17.5 miles) | ⓘWheal Trelawny (incl. Wheal Honey), Menheniot, Cornwall, England, UK |
| 28.3km (17.6 miles) | ⓘWheal Mary Ann, Menheniot, Cornwall, England, UK |
| 29.1km (18.1 miles) | ⓘWest Wheal Mary Ann (West Mary Ann Mine), Roseland, Menheniot, Cornwall, England, UK |
| 36.2km (22.5 miles) | ⓘBuller's Hill quarry, Haldon Forrest, Kenn, Teignbridge, Devon, England, UK |
| 46.0km (28.6 miles) | ⓘRestormel Royal Iron Mine (Trinity Mine), Lostwithiel, Cornwall, England, UK |
| 46.9km (29.1 miles) | ⓘWheal Maudlin (Wheal Mawdlin; Wheal Magdalen), Lostwithiel, Cornwall, England, UK |
| References |
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