| Classification |
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| Species: | 'Tourmaline' (not an IMA approved species) |
| Formula: | AD3G6(T6O18)(BO3)3X3Z |
| Confirmation |
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| Validity: | Believed Valid |
| Data |
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| Mineral Data: | Click here to view Tourmaline data |
| Locality Data: | Click here to view Overbrook, Hestonville, Philadelphia County, Pennsylvania, USA |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 839746 |
| Long-form Identifier: | 1:3:839746:1 |
| GUID (UUID V4): | 0 |
| Nearest other occurrences of Tourmaline |
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| 0.4km (0.2 miles) | ⓘCampbell's Quarry, Hestonville, Philadelphia County, Pennsylvania, USA |
| 5.7km (3.5 miles) | ⓘRidge Avenue and School Lane Quarries, East Falls, Fairmount Park, Philadelphia, Philadelphia County, Pennsylvania, USA |
| 6.1km (3.8 miles) | ⓘFalls of Schuylkill, Fairmount Park, Philadelphia, Philadelphia County, Pennsylvania, USA |
| 8.4km (5.2 miles) | ⓘBroomall, Township of Marple, Delaware County, Pennsylvania, USA |
| 9.2km (5.7 miles) | ⓘWissahickon Valley, Philadelphia, Philadelphia County, Pennsylvania, USA |
| 10.7km (6.7 miles) | ⓘFowler's Quarry, Germantown, Philadelphia, Philadelphia County, Pennsylvania, USA |
| 11.0km (6.8 miles) | ⓘMcCrea's Quarry, Germantown, Philadelphia, Philadelphia County, Pennsylvania, USA |
| 12.0km (7.5 miles) | ⓘLeiper's Lower Avondale Quarry (Morrow Quarry; Facenda Quarry), Woodlyn (Avondale), Swarthmore (Borough of Swarthmore), Delaware County, Pennsylvania, USA |
| 13.7km (8.5 miles) | ⓘLeiper's Upper Avondale Quarry, Wallingford, Ridley Township, Delaware County, Pennsylvania, USA |
| 13.8km (8.6 miles) | ⓘJerry O'Neill's Quarry, Tacony Creek Valley, Philadelphia, Philadelphia County, Pennsylvania, USA |
| References |
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