Chemical Formula: (K,Na)2(Mn,Al,Mg)8(Si,Al)40O96(OH)16·21(H2O)
Help on Composition: Composition: Molecular Weight = 3746.75 g
 
Hydrogen 1.56 % H 0.00 % 0.00 %
Oxygen 56.79 % O 0.00 % 0.00 %
Sodium 0.61 % Na 0.00 % 0.00 %
Magnesium 0.78 % Mg 0.00 % 0.00 %
Aluminum 4.18 % Al 0.00 % 0.00 %
Silicon 26.24 % Si 0.00 % 0.00 %
Potassium 1.04 % K 0.00 % 0.00 %
Manganese 8.80 % Mn 0.00 % 0.00 %

100.00 %
 
Help on Empirical Formula: Empirical Formula: KNaMn2+6Mg1.2Si35Al5.8O96(OH)16·21(H2O)
Help on Environment: Environment: Metamorphosed manganese deposit
Help on Locality: Locality: Harstig mine, Pajsberg, near Persberg, Vermland, Sweden.. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: From the Greek for "luster" and "leaf" for the high luster on cleavage planes
Help on Synonym: Synonym: