| Locality type: | Quarry |
| Classification |
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| Species: | Topaz |
| Formula: | Al2(SiO4)(F,OH)2 |
| Comments: | First found in the mid-1950s and so often unrecognized in earlier collections, topaz occurs rarely as equant, rhombic cross-section crystals up to 1 cm in the cavities or more commonly up to 5.6 cm embedded in quartz-albite-muscovite matrix. Greasy, orange-brown crystals are partially or wholly altered to muscovite and were earlier mistaken for "pinite" pseudomorphs after spodumene. |
| Habit: | equant or flattened with multiple terminal forms |
| Colour: | colorless to pale blue, orange (altered) |
| Quality for species: | Good crystals or rich for species - important (!) |
| Abundance at site: | Rare |
| Confirmation |
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| Validity: | Believed Valid |
| Associated Minerals Based on Photo Data: |
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| Quartz | β4 photos of Topaz associated with Quartz at this locality. |
| Muscovite | β3 photos of Topaz associated with Muscovite at this locality. |
| Smoky Quartz | β2 photos of Topaz associated with Smoky Quartz at this locality. |
| Lepidolite | β1 photo of Topaz associated with Lepidolite at this locality. |
| Microcline | β1 photo of Topaz associated with Microcline at this locality. |
| Elbaite | β1 photo of Topaz associated with Elbaite at this locality. |
| Data |
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| Mineral Data: | Click here to view Topaz data |
| Locality Data: | Click here to view Gillette Quarry (J-J Mine; Haddam Neck Quarry), Haddam Neck, Haddam, Middlesex County, Connecticut, USA |
| Photo Gallery | View Gallery (8 photos) |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 36950 |
| Long-form Identifier: | 1:3:36950:5 |
| GUID (UUID V4): | ccf27d6f-496c-408f-b3bc-ed3f51c0d2bb |
| Nearest other occurrences of Topaz |
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| 4.4km (2.7 miles) | βHewitt Gem Quarry (Herb's Gem Quarry; Sawmill Quarry), Haddam, Middlesex County, Connecticut, USA |
| 4.6km (2.9 miles) | βLong Hill prospects (Turkey Hill prospects), Haddam, Middlesex County, Connecticut, USA |
| 9.4km (5.8 miles) | βTollgate Quarry (Tollgate Mine; Bidwell Quarry; China-stone Quarry), Middletown, Middlesex County, Connecticut, USA |
| 10.1km (6.3 miles) | βWhite Rocks Quarry (Consolidated Quarry), White Rock Mining District, Middletown, Middlesex County, Connecticut, USA |
| 13.0km (8.1 miles) | βStrickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA |
| 15.7km (9.8 miles) | βWalden Gem Quarry, Portland, Middlesex County, Connecticut, USA |
| 34.6km (21.5 miles) | βWillimantic, Windham, Windham County, Connecticut, USA |
| 60.8km (37.8 miles) | βMonroe, Fairfield County, Connecticut, USA |
| 62.7km (38.9 miles) | βPorter Hill Road roadcut, Long Hill, Trumbull, Fairfield County, Connecticut, USA |
| 63.5km (39.5 miles) | βCorporate Drive road cut, Long Hill, Trumbull, Fairfield County, Connecticut, USA |
| References |
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Gillette Quarry, Haddam Neck, Haddam, Middlesex County, Connecticut, USA