Formula: Na.74 K.02 Ca1.27 Mn1.005 Mg4.51 Fe.07 Ti.01 Al.985 Si7.08 O24 H2
Name: Parvo-mangano-edenite
Unit cell: 9.826 18.0487 5.284 90.0 104.55 90.0 , V=907.05
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: 1103, Note: A and B occupancies invented to match formula