| Locality type: | Quarry |
| Classification |
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| Species: | 'Hornblende Root Name Group' (not an IMA approved species) |
| Formula: | ◻Ca2(C42+C3+)(AlSi7O22)W2 |
| Confirmation |
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| Validity: | Believed Valid |
| Data |
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| Mineral Data: | Click here to view Hornblende Root Name Group data |
| Locality Data: | Click here to view Valhalla, Mount Pleasant, Westchester County, New York, USA |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 81507 |
| Long-form Identifier: | 1:3:81507:7 |
| GUID (UUID V4): | 0 |
| Nearest other occurrences of Hornblende Root Name Group |
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| 4.3km (2.7 miles) | ⓘWhite Plains, Westchester County, New York, USA |
| 11.6km (7.2 miles) | ⓘVoorhis Quarry, Greenwich, Fairfield County, Connecticut, USA |
| 12.1km (7.5 miles) | ⓘHarrison, Westchester County, New York, USA |
| 16.1km (10.0 miles) | ⓘLarchmont, Mamaroneck, Westchester County, New York, USA |
| 17.3km (10.8 miles) | ⓘBedford, Westchester County, New York, USA |
| 18.0km (11.2 miles) | ⓘNew Rochelle, Westchester County, New York, USA |
| 27.9km (17.4 miles) | ⓘFort George (192nd Street & Audubon Avenue), Washington Heights, Manhattan (New York County), New York City, New York, USA |
| 34.2km (21.2 miles) | ⓘFillow Quarry, Branchville, Redding, Fairfield County, Connecticut, USA |
| 34.3km (21.3 miles) | ⓘOre loading dock, Fort Montgomery, Town of Highlands, Orange County, New York, USA |
| 35.6km (22.1 miles) | ⓘCroft Mine, Oscawana Corners, Town of Putnam Valley, Putnam County, New York, USA |
| References |
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