Mineralogy Database

Creedite Mineral Data

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General Creedite Information

Help on Chemical Formula: Chemical Formula: Ca3Al2(SO4)(F,OH)10•2(H2O)
Help on Composition: Composition: Molecular Weight = 491.30 gm
   Calcium   24.47 %  Ca   34.24 % CaO
   Aluminum  10.98 %  Al   20.75 % Al2O3
   Hydrogen   1.33 %  H    11.92 % H2O
   Sulfur     6.53 %  S    16.30 % SO3
   Oxygen    27.68 %  O
   Fluorine  29.00 %  F    29.00 % F
               -   %   F   -12.21 % -O=F2    
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca3Al2(SO4)F7.5(OH)2.5•2(H2O)
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1916
Help on Locality: Locality: Wagon Wheel Gap, Creed Quadrangle, Colorado, USA. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after its locality.
Help on Name Pronunciation: Name Pronunciation: Creedite Say CREEDITE
Help on Synonym: Synonym: ICSD 31248
  PDF Aug-72