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| ANORTHITE (Bytownite) | CaAl2Si2O8 |
| Locality: Roadside boulder, Two Mile Road, East Hanover, NH | |
| Specimen Size: 3 cm specimen. Anorthite crystal cross-section embedded in diabase matrix. | |
| Environment: Diabase dike | |
| Field collected: Tom Mortimer (2010) | |