Mineralogy Database

Rossmanite Mineral Data

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General Rossmanite Information

Help on Chemical  Formula: Chemical Formula: [ ]LiAl2Al6(Si6O18)(BO3)3(OH)4
Help on Composition: Composition: Molecular Weight = 923.75 gm
   Lithium    0.75 %  Li    1.62 % Li2O
   Aluminum  23.37 %  Al   44.15 % Al2O3
   Silicon   18.24 %  Si   39.03 % SiO2
   Boron      3.51 %  B    11.30 % B2O3
   Hydrogen   0.44 %  H     3.90 % H2O
   Oxygen    53.69 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: LiAl8Si6O18(BO3)3(OH)4
Help on Environment: Environment: Granitic pegmatite hosted by biotite and hornblende gneiss.
Help on IMA Status: IMA Status: Approved IMA 1998 (Dana # Added)
Help on Locality: Locality: Found in the Hradisko quarry, in the Rozn� lepidolite subtype of granitic pegmatite, northeastern part of the Str�zek Moldanubicum, Czech Republic. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after George R. Rossman (1945-), California Institute of Technology, Pasadena, CA, USA, in recognition for his work on the spectroscopy of the tourmaline minerals.
Help on Name Pronunciation: Name Pronunciation: Rossmanite + Pronunciation Say ROSSMANITE
Help on Synonym: Synonym: ICSD 85557
  IMA1996-018
  PDF (76-1951)