| Locality type: | Quarry |
| Classification |
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|
| Species: | Columbite-(Fe) |
| Formula: | Fe2+Nb2O6 |
| Habit: | tabular |
| Colour: | black with blue iridescence |
| Confirmation |
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|
| Validity: | Confirmed |
| Confirmation Methods: | Visually Identified |
| Associated Minerals Based on Photo Data: |
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|
| Ishikawaite | β1 photo of Columbite-(Fe) associated with Ishikawaite at this locality. |
| Microcline | β1 photo of Columbite-(Fe) associated with Microcline at this locality. |
| Quartz | β1 photo of Columbite-(Fe) associated with Quartz at this locality. |
| Data |
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|
| Mineral Data: | Click here to view Columbite-(Fe) data |
| Locality Data: | Click here to view Penfield Quarry (Oak Leaf Quarry), Portland, Middlesex County, Connecticut, USA |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 107378 |
| Long-form Identifier: | 1:3:107378:2 |
| GUID (UUID V4): | 5b3e77e3-5237-40c5-9604-a51339c536f2 |
| Nearest other occurrences of Columbite-(Fe) |
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|
|
| 1.4km (0.9 miles) | βStrickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA |
| 2.9km (1.8 miles) | βState Forest Quarry No. 1 (State Forest #1 Quarry; Clark Hill Quarry), East Hampton (Chatham), Middlesex County, Connecticut, USA |
| 3.0km (1.8 miles) | βNathan Hall Quarry (Clark Hill Quarry), East Hampton (Chatham), Middlesex County, Connecticut, USA |
| 3.0km (1.9 miles) | βWalden Gem Quarry, Portland, Middlesex County, Connecticut, USA |
| 3.1km (2.0 miles) | βState Forest Quarry No. 2 (State Forest #2 Mica Mine; Carini Quarry), Cobalt, East Hampton (Chatham), Middlesex County, Connecticut, USA |
| 3.2km (2.0 miles) | βCase Quarries, Portland, Middlesex County, Connecticut, USA |
| 3.3km (2.1 miles) | βBordonaro Quarry, Portland, Middlesex County, Connecticut, USA |
| 4.1km (2.5 miles) | βHale Quarry (Andrews Quarry; Glastonbury Quarry), Portland, Middlesex County, Connecticut, USA |
| 4.3km (2.7 miles) | βAndrews Quarry (old Hale Quarry; Grandfather Andrews Quarry), Portland, Middlesex County, Connecticut, USA |
| 4.9km (3.0 miles) | βRiverside Quarry (Western Quarry), White Rock Mining District, Middletown, Middlesex County, Connecticut, USA |
| References |
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|
Hanson, S., Jarnot, B. M., Falster, A. U., Simmons, W. B., and Nizamoff, J. W., 2003, Nb-Ta-Ti Oxide Minerals from Two Pegmatites of the Middletown Area, Connecticut, Program with Abstracts, v.30, p. 11. |
