| Locality type: | Quarry |
| Classification |
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| Species: | Bertrandite |
| Formula: | Be4(Si2O7)(OH)2 |
| Confirmation |
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| Validity: | Believed Valid |
| References |
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| References: | Ryerson, Kathleen H. (1972) Rockhouns Guide to Connecticut |
| Data |
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| Mineral Data: | Click here to view Bertrandite data |
| Locality Data: | Click here to view Curtis Quarry (Southford Quarry; Southford pegmatite; Southbury rose quartz quarry; Bridgeport Woodfinishing Co. Quarry; Hulls Hill), Southford, Southbury, New Haven Co., Connecticut, USA |
| Nearest other occurrences of Bertrandite |
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| 14.6km (9.0 miles) | | ⓘWoodbury pegmatite quarry, Woodbury, Litchfield Co., Connecticut, USA |
| 16.5km (10.3 miles) | | ⓘCaptain Cook's Quarry (Purdy Station Quarry), Newtown, Fairfield County, Connecticut, USA |
| 18.1km (11.2 miles) | | ⓘBiermann Quarries (Bethel quarries) and tourmaline ledge, Bethel, Fairfield County, Connecticut, USA |
| 18.3km (11.4 miles) | | ⓘU. S. Route 7 Expressway (Danbury line to Iron Works District), Brookfield, Fairfield County, Connecticut, USA |
| 19.8km (12.3 miles) | | ⓘBrookfield, Fairfield County, Connecticut, USA |
| 21.3km (13.3 miles) | | ⓘState Route 25 road cuts, Trumbull, Fairfield County, Connecticut, USA |
| 23.1km (14.4 miles) | | ⓘTrumbull, Fairfield County, Connecticut, USA |
| 25.1km (15.6 miles) | | ⓘMorris Dam Quarry (East Morris Dam), Morris, Litchfield Co., Connecticut, USA |
| 29.9km (18.6 miles) | | ⓘFillow Quarry (Branchville Quarry; Branchville Mica Mine; Smith Mine), Branchville, Redding (Reading), Fairfield County, Connecticut, USA |
| 31.5km (19.6 miles) | | ⓘNew England Mining Company Quarry (Roebling Mine; Hewitt's Mine), Upper Merryall, New Milford, Litchfield Co., Connecticut, USA |