| Locality type: | Quarry |
| Classification |
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| Species: | Pyrrhotite |
| Formula: | Fe1-xS |
| Confirmation |
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| Validity: | Believed Valid |
| Associated Minerals Based on Photo Data: |
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| Calcite | 2 |
| Data |
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| Mineral Data: | Click here to view Pyrrhotite data |
| Locality Data: | Click here to view Brighton Dam Road Quarry (Howard-Montgomery Quarry), Howard County, Maryland, USA |
| Photo Gallery | View Gallery (2 photos) |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 9236 |
| Long-form Identifier: | 1:3:9236:4 |
| GUID (UUID V4): | 0 |
| Nearest other occurrences of Pyrrhotite |
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| 17.2km (10.7 miles) | ⓘFrost Quarry, Davis, Howard County, Maryland, USA |
| 21.0km (13.0 miles) | ⓘSouthern Pit, Hollofield Gabbro Quarries, Hollofield, Baltimore County, Maryland, USA |
| 22.3km (13.9 miles) | ⓘMarriottsville Quarry, Hernwood, Baltimore County, Maryland, USA |
| 24.5km (15.2 miles) | ⓘHunting Hill Quarry, Rockville, Montgomery County, Maryland, USA |
| 30.7km (19.1 miles) | ⓘMaryland Mine (Allen shaft), Potomac, Montgomery County, Maryland, USA |
| 32.8km (20.4 miles) | ⓘMcMahon Quarry (Greenspring Quarry), Pikesville, Baltimore County, Maryland, USA |
| 41.7km (25.9 miles) | ⓘMartin Marietta Texas Quarry, Cockeysville, Baltimore County, Maryland, USA |
| 75.8km (47.1 miles) | ⓘCabin Branch Mine (Dumfries Mine), Dumfries, Gold-Pyrite Belt, Prince William County, Virginia, USA |
| 86.4km (53.7 miles) | ⓘHavre De Grace Quarry, Harford County, Maryland, USA |
| 99.0km (61.5 miles) | ⓘCounty Line Quarry, Wrightsville, York County, Pennsylvania, USA |
| References |
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Brighton Dam Road Quarry, Howard County, Maryland, USA