| Locality type: | Mine |
| Classification |
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| Species: | 'Hornblende Root Name Group' (not an IMA approved species) |
| Formula: | ◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2 |
| Confirmation |
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|
| Validity: | Believed Valid |
| Data |
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| Mineral Data: | Click here to view Hornblende Root Name Group data |
| Locality Data: | Click here to view Great Dowgas Mine (St Stephen Tin and Copper Mines), Downderry, St Stephen-in-Brannel, Cornwall, England, UK |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 785110 |
| Long-form Identifier: | 1:3:785110:0 |
| GUID (UUID V4): | 0d7b5932-fdf2-4e1d-ab06-968c7b66d1e8 |
| Nearest other occurrences of Hornblende Root Name Group |
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| 3.0km (1.9 miles) | ⓘSouth Terras Mine (Resugga & Tolgarrick Mine; Union Mine; Uranium Mine), St Stephen-in-Brannel, Cornwall, England, UK |
| 17.4km (10.8 miles) | ⓘGreat Retallack Mine, Perran Iron Lode (Great Perran Iron Lode), Perranzabuloe, Cornwall, England, UK |
| 23.9km (14.8 miles) | ⓘLower Treluswell, St Gluvias, Cornwall, England, UK |
| 26.6km (16.5 miles) | ⓘTresavean Mine, Lanner, Lanner, Cornwall, England, UK |
| 28.7km (17.8 miles) | ⓘNew Tolgus Shaft, Tarewaste, Redruth, Cornwall, England, UK |
| 31.0km (19.3 miles) | ⓘNorth Wheal Crofty, Pool, Carn Brea, Cornwall, England, UK |
| 31.5km (19.6 miles) | ⓘWheal Crofty (Old Wheal Crofty; incl. Wheal Knight; Wheal Vernon), North Roskear, Camborne, Cornwall, England, UK |
| 31.7km (19.7 miles) | ⓘDolcoath Mine, Camborne, Cornwall, England, UK |
| 31.9km (19.8 miles) | ⓘNew Roskear Shaft, Dolcoath Mine, Camborne, Cornwall, England, UK |
| 32.3km (20.0 miles) | ⓘPorthallow (Porthalla), St Keverne, Cornwall, England, UK |
| References |
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