| Locality type: | Quarry |
| Classification |
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| Species: | Stilpnomelane |
| Formula: | (K,Ca,Na)(Fe,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O |
| Formation: | Secondary |
| Comments: | As tiny botryoidal aggregates on other minerals in fractures. |
| Habit: | botryoidal aggregates |
| Colour: | bronze |
| Quality for species: | Poor for species, only of interest for locality collectors. (#) |
| Abundance at site: | Very Rare |
| Confirmation |
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| Validity: | Confirmed |
| Confirmation Methods: | Visually Identified |
| Associated Minerals Based on Photo Data: |
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| Quartz | ⓘ5 photos of Stilpnomelane associated with Quartz at this locality. |
| Hematite | ⓘ4 photos of Stilpnomelane associated with Hematite at this locality. |
| Calcite | ⓘ3 photos of Stilpnomelane associated with Calcite at this locality. |
| Data |
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| Mineral Data: | Click here to view Stilpnomelane data |
| Locality Data: | Click here to view Reed's Gap Quarry (New Haven Trap Rock quarry; Tilcon Durham quarry), Durham, Middlesex County, Connecticut, USA |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 1521604 |
| Long-form Identifier: | 1:3:1521604:9 |
| GUID (UUID V4): | 1e0d4210-0e7f-4d3f-9b61-8fbc77f7ec0f |
| Nearest other occurrences of Stilpnomelane |
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| 15.1km (9.4 miles) | ⓘNorth Branford Quarry, North Branford, New Haven County, Connecticut, USA |
| 37.8km (23.5 miles) | ⓘThomaston Dam railroad cut, Thomaston Dam, Thomaston, Litchfield County, Connecticut, USA |
| 40.6km (25.3 miles) | ⓘO & G Southbury Quarry (Silliman Quarry; O & G No. 2 Quarry), Orenaug Hills, Woodbury, Litchfield County, Connecticut, USA |
| 41.3km (25.7 miles) | ⓘTalcott Mountain (King Phillip's Cave), Simsbury, Hartford County, Connecticut, USA |
| 48.2km (30.0 miles) | ⓘState Route 189 road cut, Tariffville Gorge, Bloomfield, Hartford County, Connecticut, USA |
| 52.2km (32.4 miles) | ⓘRoncari Quarry, East Granby, Hartford County, Connecticut, USA |
| 53.1km (33.0 miles) | ⓘState Route 20 road cut, East Granby, Hartford County, Connecticut, USA |
| 72.6km (45.1 miles) | ⓘLane & Son traprock quarries (Lane's Quarry), Westfield, Hampden County, Massachusetts, USA |
| 94.3km (58.6 miles) | ⓘNotch Quarry (Lane Quarry; Amherst Quarry; Round Mountain Quarry), Amherst, Hampshire County, Massachusetts, USA |
| References |
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Reed's Gap Quarry, Durham, Middlesex County, Connecticut, USA