| Classification |
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| Species: | Opal var: Opal-AN |
| Formula: | SiO2 · nH2O |
| 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 State Routes 8 and 118 interchange, Harwinton, Litchfield County, Connecticut, USA |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 860440 |
| Long-form Identifier: | 1:3:860440:8 |
| GUID (UUID V4): | b5df971a-1b58-4c32-9080-f52b067f0a0b |
| Nearest other occurrences of Opal-AN |
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| 6.3km (3.9 miles) | ⓘLead Mine Brook, Harwinton, Litchfield County, Connecticut, USA |
| 7.7km (4.8 miles) | ⓘThomaston Dam railroad cut, Thomaston Dam, 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 (Shepaug Iron Company Mine; Shepaug Spathic Iron and Steel Company Mine), Mine Hill (Ore Hill), Roxbury, Litchfield County, Connecticut, USA |
| 28.8km (17.9 miles) | ⓘNew England Mining Company Quarry (Roebling Mine; Hewitt's Mine), Upper Merryall, New Milford, Litchfield County, Connecticut, USA |
| 31.6km (19.7 miles) | ⓘSouthbury, New Haven County, Connecticut, USA |
| 34.6km (21.5 miles) | ⓘCurtis Quarry (Southford Quarry; Southford pegmatite; Southbury rose quartz quarry; Bridgeport Woodfinishing Co. Quarry; Hulls Hill), Southford, Southbury, New Haven County, Connecticut, USA |
| 34.8km (21.6 miles) | ⓘ2368-2384 Berlin Turnpike (Former Hartford Drive-In), Newington, Hartford County, Connecticut, USA |
| References |
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