Chemical Formula: [ ]Ca2[Fe++4(Al,Fe+++)]Si7AlO22(OH)2
Help on Composition: Composition: Molecular Weight = 947.32 g
 
Hydrogen 0.21 % H 1.90 % H2O 0.00 %
Oxygen 40.53 % O 0.00 % 0.00 %
Aluminum 4.98 % Al 9.42 % Al2O3 0.00 %
Silicon 20.75 % Si 44.40 % SiO2 0.00 %
Calcium 8.46 % Ca 11.84 % CaO 0.00 %
Iron 25.05 % Fe 30.34 % FeO 2.11 % Fe2O3



99.98 % 97.90 % 2.11 %
 
Help on Empirical Formula: Empirical Formula: Ca2Fe2+4Al0.75Fe3+0.25(Si7AlO22)(OH)2
Help on Environment: Environment:
Help on Locality: Locality: Link to MinDat.org Location Data.
Help on Name Origin: Name Origin:
Help on Synonym: Synonym: Hornblende
Oxyhornblende
Barkevicite