Mineralogy Database

Mayenite Mineral Data

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General Mayenite Information

Help on Chemical  Formula: Chemical Formula: Ca12Al14O33
Help on Composition: Composition: Molecular Weight = 1,386.66 gm
   Calcium   34.68 %  Ca   48.53 % CaO
   Aluminum  27.24 %  Al   51.47 % Al2O3
   Oxygen    38.08 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca12Al14O33
Help on Environment: Environment: Thermally metaborphosed inclusions of marly limestone in effusive volcanic rocks. Common component of portland cement clinker.
Help on IMA Status: IMA Status: Approved IMA 1964
Help on Locality: Locality: Ettringer, Bellerberg, Mayen, Eifel, Rhineland-Pfalz, Germany Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after the locality
Help on Name Pronunciation: Name Pronunciation: Mayenite Say MAYENITE
Help on Synonym: Synonym: Achtarandite - pseudomorph, probably after mayenite.
  ICSD 6287
  PDF 9-413