Locality type: Quarry Classification Species: Schorl Formula: NaFe3 2+ Al6 (Si6 O18 )(BO3 )3 (OH)3 (OH) Comments: Usually as elongated subhedral prisms, poorly terminated, to a few cms. Typically found in the fine-grained wall zones and like the beryls oriented with their long axis sub-perpendicular to the contact with the host gneiss. Habit: elongated prisms Colour: black Abundance at site: Common Confirmation Validity: Believed Valid Associated Minerals Based on Photo Data: Quartz 4 Albite 4 Beryl 3 Microcline 3 Data Mineral Data: Click here to view Schorl data Locality Data: Click here to view Case Quarries, Portland, Middlesex County, Connecticut, USA Photo Gallery View Gallery (2 photos) Data Identifiers Mindat Occurrence Record ID: 38352 Long-form Identifier: 1:3:38352:3 GUID (UUID V4 ): 0 Localities for Schorl in this Region Case Quarry No. 2, Case Quarries, Portland, Middlesex County, Connecticut, USA Case Quarry No. 3, Case Quarries, Portland, Middlesex County, Connecticut, USA Nearest other occurrences of Schorl
0.0km (0.0 miles) ⓘ Case Quarry No. 2, Case Quarries, Portland, Middlesex County, Connecticut, USA 0.1km (0.1 miles) ⓘ Case Quarry No. 3, Case Quarries, Portland, Middlesex County, Connecticut, USA 1.3km (0.8 miles) ⓘ Gotta-Walden Prospect, Portland, Middlesex County, Connecticut, USA 1.3km (0.8 miles) ⓘ Gotta-Wannerstrom Quarry, Portland, Middlesex County, Connecticut, USA 1.4km (0.9 miles) ⓘ Bordonaro Quarry, Portland, Middlesex County, Connecticut, USA 1.5km (0.9 miles) ⓘ Walden Gem Quarry, Portland, Middlesex County, Connecticut, USA 1.5km (0.9 miles) ⓘ Hale Quarry (Andrews Quarry; Glastonbury Quarry), Portland, Middlesex County, Connecticut, USA 1.8km (1.1 miles) ⓘ Andrews Quarry (old Hale Quarry; Grandfather Andrews Quarry), Portland, Middlesex County, Connecticut, USA 2.1km (1.3 miles) ⓘ Nike prospect, Portland, Middlesex County, Connecticut, USA 2.1km (1.3 miles) ⓘ Simpson Quarry (Wiarda Quarry), South Glastonbury, Glastonbury, Hartford County, Connecticut, USA References Cameron, Eugene N., Larrabee, David M., McNair, Andrew H., Page, James J., Stewart, Glen W., Shainin, Vincent E. (1954) Pegmatite Investigations, 1942-45, in New England. Geological Survey Professional Paper 255. US Geological Survey doi:10.3133/pp255 Search for references including Schorl Case Quarries, Portland, Middlesex County, Connecticut, USA
Case Quarries, Portland, Middlesex County, Connecticut, USA