| Classification |
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| Species: | Opal |
| Formula: | SiO2 · nH2O |
| Confirmation |
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| Validity: | Believed Valid |
| Data |
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| Mineral Data: | Click here to view Opal data |
| Locality Data: | Click here to view State Routes 8 and 118 interchange, Harwinton, Litchfield County, Connecticut, USA |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 1010417 |
| Long-form Identifier: | 1:3:1010417:4 |
| GUID (UUID V4): | 0 |
| Nearest other occurrences of Opal |
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| 6.3km (3.9 miles) | ⓘLead Mine Brook, Harwinton, Litchfield County, Connecticut, USA |
| 7.6km (4.7 miles) | ⓘTorringford, Torrington, Litchfield County, Connecticut, USA |
| 7.7km (4.8 miles) | ⓘThomaston Dam railroad cut, Thomaston Dam, Thomaston, Litchfield County, Connecticut, USA |
| 11.9km (7.4 miles) | ⓘReynolds Bridge, Thomaston, Litchfield County, Connecticut, USA |
| 18.6km (11.6 miles) | ⓘBlue Stone Quarry, Waterbury, New Haven County, Connecticut, USA |
| 22.6km (14.0 miles) | ⓘNonnewaug River Industrial Park, Woodbury, Litchfield County, Connecticut, USA |
| 23.0km (14.3 miles) | ⓘMine Mountain graphite prospect, Cornwall, Litchfield County, Connecticut, USA |
| 28.1km (17.5 miles) | ⓘRoxbury Iron Mine, Mine Hill, Roxbury, Litchfield County, Connecticut, USA |
| 28.8km (17.9 miles) | ⓘRoebling Quarry, Upper Merryall, New Milford, Litchfield County, Connecticut, USA |
| 34.6km (21.5 miles) | ⓘCurtis Quarry, Southford, Southbury, New Haven County, Connecticut, USA |
| References |
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