| 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 McMahon Quarry (Greenspring Quarry), Pikesville, Baltimore County, Maryland, USA |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 97070 |
| Long-form Identifier: | 1:3:97070:9 |
| GUID (UUID V4): | 0 |
| Nearest other occurrences of Pyrrhotite |
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| 9.9km (6.2 miles) | ⓘMartin Marietta Texas Quarry, Cockeysville, Baltimore County, Maryland, USA |
| 11.9km (7.4 miles) | ⓘSouthern Pit, Hollofield Gabbro Quarries, Hollofield, Baltimore County, Maryland, USA |
| 15.2km (9.4 miles) | ⓘMarriottsville Quarry, Hernwood, Baltimore County, Maryland, USA |
| 16.2km (10.1 miles) | ⓘFrost Quarry, Davis, Howard County, Maryland, USA |
| 32.8km (20.4 miles) | ⓘBrighton Dam Road Quarry (Howard-Montgomery Quarry), Howard County, Maryland, USA |
| 54.4km (33.8 miles) | ⓘHavre De Grace Quarry, Harford County, Maryland, USA |
| 57.2km (35.5 miles) | ⓘHunting Hill Quarry, Rockville, Montgomery County, Maryland, USA |
| 63.4km (39.4 miles) | ⓘMaryland Mine (Allen shaft), Potomac, Montgomery County, Maryland, USA |
| 71.4km (44.4 miles) | ⓘCounty Line Quarry, Wrightsville, York County, Pennsylvania, USA |
| 72.8km (45.2 miles) | ⓘQuarryville Lime and Stone Company Quarry, Quarryville, Lancaster County, Pennsylvania, USA |
| References |
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McMahon Quarry, Pikesville, Baltimore County, Maryland, USA