| Locality type: | Road Cutting |
| Classification |
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| Species: | Chalcopyrite |
| Formula: | CuFeS2 |
| Comments: | Microcrystals in Alpine cleft. |
| Habit: | crude tetragonal scalenohedral |
| Colour: | golden metallic |
| Abundance at site: | Rare |
| Confirmation |
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|
| Validity: | Believed Valid |
| Associated Minerals Based on Photo Data: |
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| Datolite | 2 |
| Quartz | 2 |
| K Feldspar | 1 |
| - var Adularia | 1 |
| Data |
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| Mineral Data: | Click here to view Chalcopyrite data |
| Locality Data: | Click here to view U. S. Route 7 Expressway (Danbury line to Iron Works District), Brookfield, Fairfield County, Connecticut, USA |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 810502 |
| Long-form Identifier: | 1:3:810502:8 |
| GUID (UUID V4): | 0 |
| Nearest other occurrences of Chalcopyrite |
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| 3.0km (1.8 miles) | ⓘAgstone Company Limestone Quarry, Danbury, Fairfield County, Connecticut, USA |
| 4.0km (2.5 miles) | ⓘSky Ridge railroad cut, Hawleyville, Newtown, Fairfield County, Connecticut, USA |
| 6.7km (4.2 miles) | ⓘNorth Street mall, Danbury, Fairfield County, Connecticut, USA |
| 9.9km (6.1 miles) | ⓘGreen's Farm locality (Roxbury garnet mine; Roxbury Falls garnet mine; Garnet Hill), Roxbury, Litchfield County, Connecticut, USA |
| 10.4km (6.4 miles) | ⓘWestern Connecticut State University, Danbury, Fairfield County, Connecticut, USA |
| 13.9km (8.6 miles) | ⓘRoxbury Iron Mine, Mine Hill, Roxbury, Litchfield County, Connecticut, USA |
| 14.1km (8.8 miles) | ⓘRockside Quarry, Mine Hill, Roxbury, Litchfield County, Connecticut, USA |
| 18.2km (11.3 miles) | ⓘCopper mine, Woodbury, Litchfield County, Connecticut, USA |
| 18.3km (11.4 miles) | ⓘCurtis Quarry, Southford, Southbury, New Haven County, Connecticut, USA |
| 19.0km (11.8 miles) | ⓘTuckahoe and Patterson Marble Company Quarry, Town of Patterson, Putnam County, New York, USA |
| References |
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U. S. Route 7 Expressway, Brookfield, Fairfield County, Connecticut, USA