| Locality type: | Construction Site |
| Classification |
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| Species: | Opal var: Opal-AN |
| Formula: | SiO2 · nH2O |
| Abundance at site: | Rare |
| Confirmation |
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| Validity: | Believed Valid |
| Data |
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| Mineral Data: | Click here to view Opal-AN data |
| Locality Data: | Click here to view Blackburn Circle locality, Gloucester, Essex County, Massachusetts, USA |
| Photo Gallery | View Gallery (2 photos) |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 624176 |
| Long-form Identifier: | 1:3:624176:6 |
| GUID (UUID V4): | 0 |
| Nearest other occurrences of Opal-AN |
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| 1.4km (0.9 miles) | ⓘRailcut Hill, Gloucester, Essex County, Massachusetts, USA |
| 24.2km (15.0 miles) | ⓘDevil's Basin, Newbury, Essex County, Massachusetts, USA |
| 34.4km (21.4 miles) | ⓘRoute 114 calc-silicate locality, North Andover, Essex County, Massachusetts, USA |
| 42.3km (26.3 miles) | ⓘBlueberry Mountain Quarry (Blueberry Hill), Woburn, Middlesex County, Massachusetts, USA |
| 47.2km (29.3 miles) | ⓘFoster Corners, Salem, Rockingham County, New Hampshire, USA |
| 53.8km (33.4 miles) | ⓘPJ Keating Quarry (Dracut Quarry; Condon Quarry; Essex Bituminous), Dracut, Middlesex County, Massachusetts, USA |
| 56.9km (35.4 miles) | ⓘWest Roxbury Crushed Stone Quarry (West Roxbury Trap Rock Co. Quarry; Grove St. Quarry), West Roxbury, Boston, Suffolk County, Massachusetts, USA |
| 57.3km (35.6 miles) | ⓘLedge Road, Windham, Rockingham County, New Hampshire, USA |
| 57.6km (35.8 miles) | ⓘMassachusetts Broken Stone Co. quarries (Weston Quarry; Stony Brook Quarry), Weston, Middlesex County, Massachusetts, USA |
| 75.2km (46.7 miles) | ⓘRoute 101A construction site, Merrimack, Hillsborough County, New Hampshire, USA |
| References |
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Blackburn Circle locality, Gloucester, Essex County, Massachusetts, USA