| Locality type: | Road Cutting |
| Classification |
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| Species: | Sillimanite |
| Formula: | Al2(SiO4)O |
| Quality for species: | Rock forming mineral/non-crystalline/little interest for collectors.(##) |
| Confirmation |
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| Validity: | Believed Valid |
| Data |
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| Mineral Data: | Click here to view Sillimanite data |
| Locality Data: | Click here to view Cordierite locality (Bigelow Pond), Union, Tolland County, Connecticut, USA |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 772855 |
| Long-form Identifier: | 1:3:772855:6 |
| GUID (UUID V4): | 2212beb2-ee6f-458f-a8c7-e55afa310606 |
| Nearest other occurrences of Sillimanite |
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| 7.3km (4.5 miles) | ⓘSturbridge Graphite Mine (Tantiusques Mine; Winthrop Lead Mine), Sturbridge, Worcester County, Massachusetts, USA |
| 31.8km (19.8 miles) | ⓘWillimantic, Windham, Windham County, Connecticut, USA |
| 31.9km (19.8 miles) | ⓘUS Route 6 Willimantic Bypass expressway road cuts, Coventry, Tolland County, Connecticut, USA |
| 49.6km (30.8 miles) | ⓘSunset Quartzite Quarry, East Glastonbury, Glastonbury, Hartford County, Connecticut, USA |
| 51.1km (31.7 miles) | ⓘFalls of the Yantic River, Norwich, New London County, Connecticut, USA |
| 54.2km (33.7 miles) | ⓘWestchester, Colchester, New London County, Connecticut, USA |
| 54.6km (33.9 miles) | ⓘLinkpot cut, Airline Railroad, East Hampton (Chatham), Middlesex County, Connecticut, USA |
| 57.6km (35.8 miles) | ⓘGreat Hill cobalt mines, Cobalt, East Hampton (Chatham), Middlesex County, Connecticut, USA |
| 58.9km (36.6 miles) | ⓘUnnamed building stone quarry, Collins Hill, Portland, Middlesex County, Connecticut, USA |
| 61.9km (38.5 miles) | ⓘAnderson No. 1 Mica Mine (Swanson Mine; Swanson Lithia Mine; Old Lithia Mine; Chatham Lithia Mine), East Hampton (Chatham), Middlesex County, Connecticut, USA |
| References |
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