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| SAMUELSONITE | (Ca,Ba)Ca8Fe2+2Mn2+2Al2[(OH)2|(PO4)10] |
| Locality: Palermo Mine, N. Groton, NH | |
| Specimen Size: 2.5 mm clear prismatic samuelsonite crystal with matridite coated childrenite. | |
| Environment: Phosphate pegmatite | |
| Field collected: Clayton Ford. A gift from Gordon Jackson. Ex. Vince Valade specimen. | |