| Locality type: | Quarry |
| Classification |
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|
| Species: | Beryl var: Heliodor |
| Formula: | Be3Al2(Si6O18) |
| Comments: | Much less common than the green and blue varieties. |
| Habit: | elongated to short hexagonal prisms |
| Colour: | yellow |
| Abundance at site: | Rare |
| Confirmation |
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|
| Validity: | Confirmed |
| Confirmation Methods: | Visually Identified |
| Data |
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|
| Mineral Data: | Click here to view Heliodor data |
| Locality Data: | Click here to view Case Quarries, Portland, Middlesex County, Connecticut, USA |
| Data Identifiers |
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|
| Mindat Occurrence Record ID: | 164540 |
| Long-form Identifier: | 1:3:164540:8 |
| GUID (UUID V4): | 0 |
| Nearest other occurrences of Heliodor |
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|
|
| 1.5km (0.9 miles) | ⓘWalden Gem Quarry, Portland, Middlesex County, Connecticut, USA |
| 2.1km (1.3 miles) | ⓘSimpson Quarry (Wiarda Quarry), South Glastonbury, Glastonbury, Hartford County, Connecticut, USA |
| 3.7km (2.3 miles) | ⓘSchoonmaker Mine, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA |
| 3.8km (2.3 miles) | ⓘStrickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA |
| 4.5km (2.8 miles) | ⓘPegmatite prospects, Collins Hill, Portland, Middlesex County, Connecticut, USA |
| 11.0km (6.8 miles) | ⓘBecker Quarry, East Hampton, Middlesex County, Connecticut, USA |
| 13.0km (8.1 miles) | ⓘAnderson No. 1 Mica Mine, East Hampton, Middlesex County, Connecticut, USA |
| 13.7km (8.5 miles) | ⓘSlocum prospect, East Hampton, Middlesex County, Connecticut, USA |
| 19.4km (12.1 miles) | ⓘCivilian Conservation Corps prospect (CCC prospect; Cook columbite prospect), Haddam, Middlesex County, Connecticut, USA |
| 20.0km (12.4 miles) | ⓘHewitt Gem Quarry (Herb's Gem Quarry; Sawmill Quarry), Haddam, Middlesex County, Connecticut, USA |
| References |
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|
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 |
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