Mineralogy Database

Stavelotite-(La) Mineral Data

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General Stavelotite-(La) Information

Help on Chemical Formula: Chemical Formula: La3Mn++3Cu++(Mn+++,Fe+++,Mn++++)26(Si2O7)6O30
Help on Composition: Composition: Molecular Weight = 3,438.35 gm
   Calcium     0.24 %  Ca    0.34 % CaO
   Lanthanum   7.38 %  La    8.66 % La2O3
   Cerium      0.39 %  Ce    0.45 % Ce2O3
   Magnesium   0.66 %  Mg    1.09 % MgO
   Scandium    0.99 %  Sc    1.52 % Sc2O3
   Titanium    0.27 %  Ti    0.45 % TiO2
   Manganese  30.70 %  Mn   32.67 % Mn2O3 /  4.98 % MnO2
   Aluminum    1.80 %  Al    3.41 % Al2O3
   Iron        9.44 %  Fe   13.50 % Fe2O3
   Cobalt      0.15 %  Co    0.19 % CoO
   Copper      1.74 %  Cu    2.18 % CuO
   Silicon     9.73 %  Si   20.82 % SiO2
   Neodymium   3.00 %  Nd    3.50 % Nd2O3
   Oxygen     33.50 %  O
             ______        ______ 
             100.00 %       99.93 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: La1.82Nd0.71Ce0.09Ca0.2Sc0.15Mn2+2.99Cu0.94Mn3+0.05Mn3+14.18Fe3+5.81Al2.29 Mn4+1.97Mg0.93Sc0.6Ti0.19Co0.08Si11.91O72
Help on Environment: Environment: Minor accessory mineral in a quartz vein cross-cutting deep purple, highly oxidized manganiferous Ordovician phyllites.
Help on IMA Status: IMA Status: Approved IMA 2004 (Dana # Added)
Help on Locality: Locality: Stavelot Massif at Le Coreux, 1 km north of Salmch�teau along the western flanks of the Salm river valley, Ardennes, Belgium. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the Stavelot Massif in the Belgian Ardennes Mountains, and Stavelot, which is a historical town in eastern Belgium.
Help on Synonym: Synonym: IMA2004-014