| Locality type: | Quarry |
| Classification |
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| Species: | Opal |
| Formula: | SiO2 · nH2O |
| Comments: | Usually not noticeable until a specimen is illuminated by UV light. The coatings are thin and colorless but may give a waxy appearance to the surface. |
| Habit: | massive coatings |
| Colour: | colorless |
| Luminescent properties: | green |
| Confirmation |
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| Validity: | Confirmed |
| Confirmation Methods: | Visual (Fluorescence) |
| Data |
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| Mineral Data: | Click here to view Opal data |
| Locality Data: | Click here to view Riverside Quarry (Western Quarry), White Rock Mining District, Middletown, Middlesex County, Connecticut, USA |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 1004166 |
| Long-form Identifier: | 1:3:1004166:2 |
| GUID (UUID V4): | 0 |
| Nearest other occurrences of Opal |
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| 0.5km (0.3 miles) | ⓘWhite Rocks Quarry (Consolidated Quarry), White Rock Mining District, Middletown, Middlesex County, Connecticut, USA |
| 3.3km (2.1 miles) | ⓘHale-Walker prospects, Collins Hill, Portland, Middlesex County, Connecticut, USA |
| 4.0km (2.5 miles) | ⓘStrickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA |
| 5.0km (3.1 miles) | ⓘGreat Hill cobalt mines, Cobalt, East Hampton, Middlesex County, Connecticut, USA |
| 5.3km (3.3 miles) | ⓘPelton's Quarry, Portland, Middlesex County, Connecticut, USA |
| 6.6km (4.1 miles) | ⓘNathan Hall Quarry, East Hampton, Middlesex County, Connecticut, USA |
| 6.8km (4.2 miles) | ⓘWalden Gem Quarry, Portland, Middlesex County, Connecticut, USA |
| 6.9km (4.3 miles) | ⓘGotta-Walden Prospect, Portland, Middlesex County, Connecticut, USA |
| 7.0km (4.3 miles) | ⓘWorth and Selden Quarries (Victoria Quarry), East Hampton, Middlesex County, Connecticut, USA |
| 7.7km (4.8 miles) | ⓘJohn Salak Quarry, Haddam, Middlesex County, Connecticut, USA |
| References |
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