Allanite-(Ce) : (CaCe)(AlAlFe2+)O[Si2O7][SiO4](OH)
Aegirine-augite : (NaaCabFe2+cMgd)(Fe3+eAlfFe2+gMgh)Si2O6
Quartz : SiO2
Albite : Na(AlSi3O8)
As recorded:
Flatrock Quarry, Waterford, New London County, Connecticut, USA
3cm x 2.5cm x 2cm
weight: 14g
Photo added to mindat.org
“Black, tabular allanite-(Ce) crystals in gneiss matrix (aegirine-augite, quartz, albite). Former Ed Force collection.”
Harold Moritz - 12th January 2019
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