| Locality type: | Quarry |
| Classification |
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| Species: | 'Hornblende Root Name Group' (not an IMA approved species) |
| Formula: | ◻Ca2(C42+C3+)(AlSi7O22)W2 |
| Confirmation |
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| Validity: | Believed Valid |
| Associated Minerals Based on Photo Data: |
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| K Feldspar | 1 |
| Siderite | 1 |
| Plagioclase | 1 |
| Data |
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| Mineral Data: | Click here to view Hornblende Root Name Group data |
| Locality Data: | Click here to view La Roche Quarry, Calanhel, Guingamp, Côtes-d'Armor, Brittany, France |
| Photo Gallery | View Gallery (5 photos) |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 81973 |
| Long-form Identifier: | 1:3:81973:6 |
| GUID (UUID V4): | 0 |
| Nearest other occurrences of Hornblende Root Name Group |
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| 42.4km (26.3 miles) | ⓘMadec Quarry, La Clarté, Perros-Guirec, Lannion, Côtes-d'Armor, Brittany, France |
| 80.4km (49.9 miles) | ⓘGuélet ar C'hoat, Plouguin, Brest, Finistère, Brittany, France |
| 91.3km (56.7 miles) | ⓘPointe des Chats, Primiture, Groix, Lorient, Morbihan, Brittany, France |
| References |
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La Roche Quarry, Calanhel, Guingamp, Côtes-d'Armor, Brittany, France