Locality type: | Quarry |
Classification |
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Species: | Opal |
Formula: | SiO2 · nH2O |
Comments: | As coatings only readily visible when fluorescing under SW UV light. |
Habit: | encrustations |
Colour: | colorless |
Luminescent properties: | green under SW |
Abundance at site: | Common |
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 Hewitt Gem Quarry (Herb's Gem Quarry; Sawmill Quarry), Haddam, Middlesex County, Connecticut, USA |
Data Identifiers |
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Mindat Occurrence Record ID: | 1012719 |
Long-form Identifier: | 1:3:1012719:3 |
GUID (UUID V4): | 6ff5cf71-695f-4c2b-847f-2bb28bec83e9 |
Nearest other occurrences of Opal |
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2.0km (1.3 miles) | ⓘJail Hill Road locality (Jail Hill Quarry), Haddam, Middlesex County, Connecticut, USA |
5.0km (3.1 miles) | ⓘForest Ridge Road, Higganum, Haddam, Middlesex County, Connecticut, USA |
5.8km (3.6 miles) | ⓘHaddam Volunteer Fire Station, Higganum, Haddam, Middlesex County, Connecticut, USA |
6.2km (3.9 miles) | ⓘRock Landing Quarry (Capt. Rohrback Quarry), Haddam Neck, Haddam, Middlesex County, Connecticut, USA |
7.1km (4.4 miles) | ⓘAnderson No. 1 Mica Mine (Swanson Mine; Swanson Lithia Mine; Old Lithia Mine; Chatham Lithia Mine), East Hampton (Chatham), Middlesex County, Connecticut, USA |
8.7km (5.4 miles) | ⓘWorth and Selden Quarries (Victoria Quarry), East Hampton (Chatham), Middlesex County, Connecticut, USA |
9.3km (5.8 miles) | ⓘJohn Salak Quarry, Haddam, Middlesex County, Connecticut, USA |
9.4km (5.9 miles) | ⓘSlocum prospect, East Hampton (Chatham), Middlesex County, Connecticut, USA |
13.5km (8.4 miles) | ⓘWhite Rocks Quarry (Consolidated Quarry), White Rock Mining District, Middletown, Middlesex County, Connecticut, USA |
14.0km (8.7 miles) | ⓘRiverside Quarry (Western Quarry), White Rock Mining District, Middletown, Middlesex County, Connecticut, USA |
References |
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Hewitt Gem Quarry, Haddam, Middlesex County, Connecticut, USA