| Classification |
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|
| Species: | Opal |
| Formula: | SiO2 · nH2O |
| Comments: | colorless, gelatinous coatings on the pegmatite |
| Habit: | encrustations |
| Colour: | colorless |
| Luminescent properties: | bright green |
| Quality for species: | Good crystals or rich for species - important (!) |
| Abundance at site: | Common |
| Confirmation |
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|
| Validity: | Confirmed |
| Confirmation Methods: | Visually Identified |
| Data |
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| Mineral Data: | Click here to view Opal data |
| Locality Data: | Click here to view Haddam Volunteer Fire Station, Higganum, Haddam, Middlesex County, Connecticut, USA |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 1012665 |
| Long-form Identifier: | 1:3:1012665:3 |
| GUID (UUID V4): | 1c6497ad-6ed4-4d9b-a49a-9d77fdf4688d |
| Nearest other occurrences of Opal |
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|
|
| 0.8km (0.5 miles) | ⓘForest Ridge Road, Higganum, Haddam, Middlesex County, Connecticut, USA |
| 2.3km (1.4 miles) | ⓘRock Landing Quarry (Capt. Rohrback Quarry), Haddam Neck, Haddam, Middlesex County, Connecticut, USA |
| 2.9km (1.8 miles) | ⓘAnderson No. 1 Mica Mine (Swanson Mine; Swanson Lithia Mine; Old Lithia Mine; Chatham Lithia Mine), East Hampton (Chatham), Middlesex County, Connecticut, USA |
| 3.9km (2.4 miles) | ⓘWorth and Selden Quarries (Victoria Quarry), East Hampton (Chatham), Middlesex County, Connecticut, USA |
| 4.1km (2.5 miles) | ⓘJail Hill Road locality (Jail Hill Quarry), Haddam, Middlesex County, Connecticut, USA |
| 5.4km (3.4 miles) | ⓘJohn Salak Quarry, Haddam, Middlesex County, Connecticut, USA |
| 5.8km (3.6 miles) | ⓘHewitt Gem Quarry (Herb's Gem Quarry; Sawmill Quarry), Haddam, Middlesex County, Connecticut, USA |
| 7.4km (4.6 miles) | ⓘSlocum prospect, East Hampton (Chatham), Middlesex County, Connecticut, USA |
| 7.7km (4.8 miles) | ⓘWhite Rocks Quarry (Consolidated Quarry), White Rock Mining District, Middletown, Middlesex County, Connecticut, USA |
| 8.2km (5.1 miles) | ⓘRiverside Quarry (Western Quarry), White Rock Mining District, Middletown, Middlesex County, Connecticut, USA |
| References |
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Haddam Volunteer Fire Station, Higganum, Haddam, Middlesex County, Connecticut, USA