Locality type: Prospect Classification Species: Beryl Formula: Be3 Al2 (Si6 O18 ) Formation: Primary Comments: Subhedral crystals are found in the wall and border zones of the pegmatite, increasing in size but decreasing in abundance in these zones, respectively. Small, elongated crystals to a few cm pointing away from the contact with the host gneiss, associated with similarly-oriented schorl and almandine crystals, are common in the finer-grained wall zone. They may reach 12 cm in the border zone. Habit: elongated, tapered prismatic Colour: colorless, yellow-green, pale to deep green, pale to deep blue Quality for species: Good crystals or rich for species - important (!) Abundance at site: Common Confirmation Validity: Believed Valid Associated Minerals Based on Photo Data: Quartz 5 Albite 4 Muscovite 3 Microcline 2 Schorl 1 Data Mineral Data: Click here to view Beryl data Locality Data: Click here to view Case Quarry No. 3, Case Quarries, Portland, Middlesex County, Connecticut, USA Photo Gallery View Gallery (7 photos) Data Identifiers Mindat Occurrence Record ID: 1690574 Long-form Identifier: 1:3:1690574:2 GUID (UUID V4 ): 0 Nearest other occurrences of Beryl
0.1km (0.1 miles) ⓘ Case Prospect No. 4, Case Quarries, Portland, Middlesex County, Connecticut, USA 0.1km (0.1 miles) ⓘ Case Quarry No. 1, Case Quarries, Portland, Middlesex County, Connecticut, USA 0.1km (0.1 miles) ⓘ Case Quarries, Portland, Middlesex County, Connecticut, USA 0.2km (0.1 miles) ⓘ Case Quarry No. 2, Case Quarries, Portland, Middlesex County, Connecticut, USA 0.8km (0.5 miles) ⓘ Appletree Lane, Portland, Middlesex County, Connecticut, USA 1.4km (0.9 miles) ⓘ Gotta-Walden Prospect, Portland, Middlesex County, Connecticut, USA 1.5km (0.9 miles) ⓘ Bordonaro Quarry, Portland, Middlesex County, Connecticut, USA 1.5km (0.9 miles) ⓘ Hale Quarry (Andrews Quarry; Glastonbury Quarry), Portland, Middlesex County, Connecticut, USA 1.6km (1.0 miles) ⓘ Walden Gem Quarry, Portland, Middlesex County, Connecticut, USA 1.8km (1.1 miles) ⓘ Andrews Quarry (old Hale Quarry; Grandfather Andrews Quarry), Portland, Middlesex 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 Beryl Case Quarry No. 3, Case Quarries, Portland, Middlesex County, Connecticut, USA
Case Quarry No. 3, Case Quarries, Portland, Middlesex County, Connecticut, USA