| Locality type: | Quarry |
| Classification |
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| Species: | Epidote |
| Formula: | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Confirmation |
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| Validity: | Believed Valid |
| Data |
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| Mineral Data: | Click here to view Epidote data |
| Locality Data: | Click here to view Shaker Quarry, Groton, Middlesex County, Massachusetts, USA |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 562844 |
| Long-form Identifier: | 1:3:562844:5 |
| GUID (UUID V4): | 0 |
| Nearest other occurrences of Epidote |
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| 2.9km (1.8 miles) | ⓘAggregate Industries Quarry (San-Val Quarry), Littleton, Middlesex County, Massachusetts, USA |
| 4.6km (2.8 miles) | ⓘPalmer Quarries, Snake Meadow Hill, Westford, Middlesex County, Massachusetts, USA |
| 10.3km (6.4 miles) | ⓘOak Hill Quarry, Westford, Middlesex County, Massachusetts, USA |
| 10.3km (6.4 miles) | ⓘHarris Quarry, Acton, Middlesex County, Massachusetts, USA |
| 10.7km (6.6 miles) | ⓘMcCarthy Quarry, Acton, Middlesex County, Massachusetts, USA |
| 15.8km (9.8 miles) | ⓘBolton Lime Quarries (Bolton Quarry; Whitcomb Quarry; Hildreth Quarry), Bolton, Worcester County, Massachusetts, USA |
| 21.1km (13.1 miles) | ⓘRoute 62 locality (Potash Hill), Hudson, Middlesex County, Massachusetts, USA |
| 21.3km (13.3 miles) | ⓘPJ Keating Quarry (Dracut Quarry; Condon Quarry; Essex Bituminous), Dracut, Middlesex County, Massachusetts, USA |
| 24.0km (14.9 miles) | ⓘRollstone Hill Quarries, Fitchburg, Worcester County, Massachusetts, USA |
| 25.5km (15.9 miles) | ⓘIndian Head Hill, Marlborough, Middlesex County, Massachusetts, USA |
| References |
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