| 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 Sturbridge Graphite Mine (Tantiusques Mine; Winthrop Lead Mine), Sturbridge, Worcester County, Massachusetts, USA |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 97219 |
| Long-form Identifier: | 1:3:97219:6 |
| GUID (UUID V4): | 0 |
| Nearest other occurrences of Hornblende Root Name Group |
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| 34.5km (21.4 miles) | ⓘMansfield Hollow Dam, Windham, Windham County, Connecticut, USA |
| 35.3km (21.9 miles) | ⓘBallard Quarry, Worcester, Worcester County, Massachusetts, USA |
| 38.6km (24.0 miles) | ⓘQuabbin Aqueduct Shaft #6 locality, Rutland, Worcester County, Massachusetts, USA |
| 38.8km (24.1 miles) | ⓘUS Route 6 Willimantic Bypass expressway road cuts, Coventry, Tolland County, Connecticut, USA |
| 41.5km (25.8 miles) | ⓘQuabbin Aqueduct Shaft #4 locality, Holden, Worcester County, Massachusetts, USA |
| 42.8km (26.6 miles) | ⓘPelham asbestos mine, Pelham, Hampshire County, Massachusetts, USA |
| 58.0km (36.1 miles) | ⓘRoute 62 locality (Potash Hill), Hudson, Middlesex County, Massachusetts, USA |
| 58.4km (36.3 miles) | ⓘCenterdale, North Providence, Providence County, Rhode Island, USA |
| 58.9km (36.6 miles) | ⓘGrants Mills, Cumberland, Providence County, Rhode Island, USA |
| 60.8km (37.8 miles) | ⓘCase Quarries, Portland, Middlesex County, Connecticut, USA |
| References |
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