| Locality type: | Mine |
| 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 |
| Data |
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| Mineral Data: | Click here to view Hornblende Root Name Group data |
| Locality Data: | Click here to view Boyd Mine, Riley Mountains, Llano County, Texas, USA |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 199985 |
| Long-form Identifier: | 1:3:199985:3 |
| GUID (UUID V4): | 0 |
| Nearest other occurrences of Hornblende Root Name Group |
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| 15.7km (9.7 miles) | ⓘKingsland Granite Company Quarry (Petrick Quarry), Llano County, Texas, USA |
| 17.7km (11.0 miles) | ⓘOlive Mine, Llano County, Texas, USA |
| 23.0km (14.3 miles) | ⓘReed prospect, Burnet County, Texas, USA |
| 24.6km (15.3 miles) | ⓘSheridan Copper prospect [includes Rainbow prospect], Burnet County, Texas, USA |
| 28.8km (17.9 miles) | ⓘPavitte Copper prospect, Burnet County, Texas, USA |
| 29.8km (18.5 miles) | ⓘSpring Creek prospect, Burnet County, Texas, USA |
| 32.1km (20.0 miles) | ⓘThomas Ranch, Spring Creek, Burnet County, Texas, USA |
| 56.3km (35.0 miles) | ⓘHaynie mine, Mason County, Texas, USA |
| References |
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