Mineralogy Database

Fairfieldite Mineral Data

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General Fairfieldite Information

Help on Chemical Formula: Chemical Formula: Ca2(Mn,Fe++)(PO4)2•2(H2O)
Help on Composition: Composition: Molecular Weight = 361.29 gm
   Calcium     22.19 %  Ca   31.04 % CaO
   Manganese   11.40 %  Mn   14.73 % MnO
   Iron         3.86 %  Fe    4.97 % FeO
   Phosphorus  17.15 %  P    39.29 % P2O5
   Hydrogen     1.12 %  H     9.97 % H2O
   Oxygen      44.28 %  O
              ______        ______ 
              100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca2Mn2+0.75Fe2+0.25(PO4)2•2(H2O)
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1879
Help on Locality: Locality: Branchville, Redding, Fairfield County, Connecticut, USA Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the locality.
Help on Name Pronunciation: Name Pronunciation: Fairfieldite + Pronunciation Say FAIRFIELDITE
Help on Synonym: Synonym: ICSD 16017
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