| Locality type: | Prospect |
| Classification |
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| Species: | 'Columbite-(Fe)-Columbite-(Mn) Series' (not an IMA approved species) |
| Comments: | Typically small prisms less than 3 cm. Species is unconfirmed by analyses but most black columbite-tantalite in the district is opaque and black. |
| Habit: | prismatic |
| Colour: | black with iridescence |
| Abundance at site: | Rare |
| Confirmation |
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|
| Validity: | Confirmed |
| Confirmation Methods: | Visually Identified |
| Associated Minerals Based on Photo Data: |
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| Albite | β2 photos of Columbite-(Fe)-Columbite-(Mn) Series associated with Albite at this locality. |
| Cleavelandite | β2 photos of Columbite-(Fe)-Columbite-(Mn) Series associated with Cleavelandite at this locality. |
| Quartz | β2 photos of Columbite-(Fe)-Columbite-(Mn) Series associated with Quartz at this locality. |
| Muscovite | β1 photo of Columbite-(Fe)-Columbite-(Mn) Series associated with Muscovite 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 Hollister prospects, South Glastonbury, Glastonbury, Hartford County, Connecticut, USA |
| Photo Gallery | View Gallery (8 photos) |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 763637 |
| Long-form Identifier: | 1:3:763637:0 |
| GUID (UUID V4): | a211ef3f-437f-40db-8e2c-51b466b248e3 |
| Nearest other occurrences of Columbite-(Fe)-Columbite-(Mn) Series |
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| 0.6km (0.4 miles) | βHusband Quarries, South Glastonbury, Glastonbury, Hartford County, Connecticut, USA |
| 0.6km (0.4 miles) | βSimpson Quarry (Wiarda Quarry), South Glastonbury, Glastonbury, Hartford County, Connecticut, USA |
| 0.6km (0.4 miles) | βGriswold Quarry, South Glastonbury, Glastonbury, Hartford County, Connecticut, USA |
| 0.9km (0.5 miles) | βUnnamed pegmatite prospects, South Glastonbury, Glastonbury, Hartford County, Connecticut, USA |
| 1.0km (0.6 miles) | βEureka Quarries, South Glastonbury, Glastonbury, Hartford County, Connecticut, USA |
| 2.8km (1.7 miles) | βWalden Gem Quarry, Portland, Middlesex County, Connecticut, USA |
| 4.2km (2.6 miles) | βKnob Hill Quarry, Glastonbury, Hartford County, Connecticut, USA |
| 4.8km (3.0 miles) | βPelton's Quarry, Portland, Middlesex County, Connecticut, USA |
| 6.4km (4.0 miles) | βBrack Gem prospect (Brack prospect), East Glastonbury, Glastonbury, Hartford County, Connecticut, USA |
| 6.5km (4.0 miles) | βHale-Walker prospects, Collins Hill, Portland, Middlesex County, Connecticut, USA |
| References |
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Hollister prospects, South Glastonbury, Glastonbury, Hartford County, Connecticut, USA