| Locality type: | Quarry |
| Classification |
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| Species: | Prehnite |
| Formula: | Ca2Al2Si3O10(OH)2 |
| Confirmation |
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| Validity: | Believed Valid |
| Associated Minerals Based on Photo Data: |
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| Calcite | 7 |
| Fluorapophyllite-(K) | 5 |
| Apophyllite Group | 3 |
| Babingtonite | 2 |
| Datolite | 2 |
| Data |
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| Mineral Data: | Click here to view Prehnite data |
| Locality Data: | Click here to view Mount Tom Quarry, Mount Tom, Holyoke, Hampden County, Massachusetts, USA |
| Photo Gallery | View Gallery (5 photos) |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 99757 |
| Long-form Identifier: | 1:3:99757:5 |
| GUID (UUID V4): | 0 |
| Nearest other occurrences of Prehnite |
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| 10.3km (6.4 miles) | ⓘNotch Quarry (Lane Quarry; Amherst Quarry; Round Mountain Quarry), Amherst, Hampshire County, Massachusetts, USA |
| 14.2km (8.8 miles) | ⓘHampden quarry, West Springfield, Hampden County, Massachusetts, USA |
| 15.5km (9.7 miles) | ⓘLane & Son traprock quarries (Lane's Quarry), Westfield, Hampden County, Massachusetts, USA |
| 22.0km (13.7 miles) | ⓘPelham Granite quarry (Ward Quarry; Valley Quarry), Pelham, Hampshire County, Massachusetts, USA |
| 29.0km (18.0 miles) | ⓘMonson quarries (Flynt quarries), Monson, Hampden County, Massachusetts, USA |
| 34.9km (21.7 miles) | ⓘCheapside Quarry (East Deerfield Quarry; Trew Corp. Quarry), Deerfield, Franklin County, Massachusetts, USA |
| 35.2km (21.9 miles) | ⓘState Route 20 road cut, East Granby, Hartford County, Connecticut, USA |
| 36.1km (22.5 miles) | ⓘRoncari Quarry, East Granby, Hartford County, Connecticut, USA |
| 40.4km (25.1 miles) | ⓘTariffville Gorge, Bloomfield, Hartford County, Connecticut, USA |
| 41.6km (25.9 miles) | ⓘQuabbin Aqueduct shaft No. 10 locality, Hardwick, Worcester County, Massachusetts, USA |
| References |
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Mount Tom Quarry, Mount Tom, Holyoke, Hampden County, Massachusetts, USA