| Classification |
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| Species: | Opal var: Opal-AN |
| Formula: | SiO2 · nH2O |
| Confirmation |
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| Validity: | Confirmed |
| Confirmation Methods: | Visually Identified |
| Data |
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| Mineral Data: | Click here to view Opal-AN data |
| Locality Data: | Click here to view Lead Mine Brook, Harwinton, Litchfield County, Connecticut, USA |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 780299 |
| Long-form Identifier: | 1:3:780299:7 |
| GUID (UUID V4): | 0 |
| Nearest other occurrences of Opal-AN |
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| 2.8km (1.7 miles) | ⓘThomaston Dam railroad cut, Thomaston Dam, Thomaston, Litchfield County, Connecticut, USA |
| 6.3km (3.9 miles) | ⓘState Routes 8 and 118 interchange, Harwinton, Litchfield County, Connecticut, USA |
| 13.8km (8.6 miles) | ⓘBlue Stone Quarry, Waterbury, New Haven County, Connecticut, USA |
| 20.9km (13.0 miles) | ⓘNonnewaug River Industrial Park, Woodbury, Litchfield County, Connecticut, USA |
| 29.1km (18.1 miles) | ⓘRoxbury Iron Mine, Mine Hill, Roxbury, Litchfield County, Connecticut, USA |
| 29.1km (18.1 miles) | ⓘMine Mountain graphite prospect, Cornwall, Litchfield County, Connecticut, USA |
| 29.3km (18.2 miles) | ⓘ2368-2384 Berlin Turnpike (Former Hartford Drive-In), Newington, Hartford County, Connecticut, USA |
| 31.8km (19.7 miles) | ⓘCurtis Quarry, Southford, Southbury, New Haven County, Connecticut, USA |
| 32.2km (20.0 miles) | ⓘRoebling Quarry, Upper Merryall, New Milford, Litchfield County, Connecticut, USA |
| 35.2km (21.9 miles) | ⓘRocky Hill Quarry, Rocky Hill, Hartford County, Connecticut, USA |
| References |
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