Formula: Na.64 K.02 Ca Mn1.27 Mg4.56 Fe.04 Al.76 Ti.01 Si7.36 O24 H2
Name: Parvo-mangano-edenite
Unit cell: 9.795 18.047 5.2869 90.0 104.28 90.0 , V=905.69
Space group: C12/M1 (12)

Oberti R , Camara F , Della Ventura G , Iezzi G , Benimoff A I , American Mineralogist , 91 (2006) p.526-532, Parvo-mangano-edenite, parvo-manganotremolite, and the solid solution, between Ca and Mn2+ at the M4 site in amphiboles, Locality: Grenville marble, Arnold open pit, St Lawrence Co, New York, USA, Sample: 1079, Note: A and B occupancies invented to match formula