| Locality type: | Quarry |
| Classification |
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| Species: | 'Columbite-(Fe)-Columbite-(Mn) Series' (not an IMA approved species) |
| Comments: | Typically as small crystals. |
| Colour: | black |
| Quality for species: | Poor for species, only of interest for locality collectors. (#) |
| Confirmation |
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| Validity: | Believed Valid |
| Associated Minerals Based on Photo Data: |
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| Albite | β9 photos of Columbite-(Fe)-Columbite-(Mn) Series associated with Albite at this locality. |
| Quartz | β8 photos of Columbite-(Fe)-Columbite-(Mn) Series associated with Quartz at this locality. |
| Spessartine | β3 photos of Columbite-(Fe)-Columbite-(Mn) Series associated with Spessartine at this locality. |
| Microcline | β3 photos of Columbite-(Fe)-Columbite-(Mn) Series associated with Microcline at this locality. |
| Lepidolite | β2 photos of Columbite-(Fe)-Columbite-(Mn) Series associated with Lepidolite at this locality. |
| Muscovite | β2 photos of Columbite-(Fe)-Columbite-(Mn) Series associated with Muscovite at this locality. |
| Zircon | β1 photo of Columbite-(Fe)-Columbite-(Mn) Series associated with Zircon at this locality. |
| Smoky Quartz | β1 photo of Columbite-(Fe)-Columbite-(Mn) Series associated with Smoky Quartz at this locality. |
| Calciomicrolite | β1 photo of Columbite-(Fe)-Columbite-(Mn) Series associated with Calciomicrolite at this locality. |
| Fluorapatite | β1 photo of Columbite-(Fe)-Columbite-(Mn) Series associated with Fluorapatite at this locality. |
| Data |
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| Mineral Data: | Click here to view Columbite-(Fe)-Columbite-(Mn) Series data |
| Locality Data: | Click here to view Hewitt Gem Quarry (Herb's Gem Quarry; Sawmill Quarry), Haddam, Middlesex County, Connecticut, USA |
| Photo Gallery | View Gallery (11 photos) |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 662099 |
| Long-form Identifier: | 1:3:662099:8 |
| GUID (UUID V4): | 534c8b56-9314-4e01-a487-c9489b78ec0b |
| Nearest other occurrences of Columbite-(Fe)-Columbite-(Mn) Series |
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| 1.1km (0.7 miles) | βArnold Quarry, Haddam, Middlesex County, Connecticut, USA |
| 1.5km (0.9 miles) | βState Route 9 Interchange 13 - Beaver Meadow Road, Haddam, Middlesex County, Connecticut, USA |
| 2.0km (1.3 miles) | βJail Hill Road locality (Jail Hill Quarry), Haddam, Middlesex County, Connecticut, USA |
| 3.1km (1.9 miles) | βNathaniel Cook house, Haddam, Middlesex County, Connecticut, USA |
| 4.1km (2.5 miles) | βQuarry Hill (Brainerd Quarries; Shailor Quarries), Haddam Neck, Haddam, Middlesex County, Connecticut, USA |
| 5.4km (3.3 miles) | βMt. Tom prospects, Moodus, East Haddam, Middlesex County, Connecticut, USA |
| 7.1km (4.4 miles) | βAnderson No. 1 Mica Mine (Swanson Mine; Swanson Lithia Mine; Old Lithia Mine; Chatham Lithia Mine), East Hampton (Chatham), Middlesex County, Connecticut, USA |
| 8.1km (5.0 miles) | βHurd State Park quarries, East Hampton (Chatham), Middlesex County, Connecticut, USA |
| 8.7km (5.4 miles) | βWorth and Selden Quarries (Victoria Quarry), East Hampton (Chatham), Middlesex County, Connecticut, USA |
| 8.8km (5.4 miles) | βHalberg Quarries (Eureka Quarry; Cook Quarry; Gem Stone Quarry), East Hampton (Chatham), Middlesex County, Connecticut, USA |
| References |
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Hewitt Gem Quarry, Haddam, Middlesex County, Connecticut, USA