Mineralogy Database

Apjohnite Mineral Data

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General Apjohnite Information

Help on Chemical  Formula: Chemical Formula: MnAl2(SO4)4•22(H2O)
Help on Composition: Composition: Molecular Weight = 889.49 gm
   Manganese   6.18 %  Mn    7.98 % MnO
   Aluminum    6.07 %  Al   11.46 % Al2O3
   Hydrogen    4.99 %  H    44.56 % H2O
   Sulfur     14.42 %  S    36.00 % SO3
   Oxygen     68.35 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Mn2+Al2(SO4)4•22(H2O)
Help on Environment: Environment: Found as efflorescences.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1838
Help on Locality: Locality: Maputo (Delagoa) Bay, near Maputo (Louren�co Marques), Mozambique. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for James Apjohn (1796-1886), Professor of Chemistry and Mineralogy, Trinity College, Dublin, Ireland.
Help on Name Pronunciation: Name Pronunciation: Apjohnite + Pronunciation Say APJOHNITE
Help on Synonym: Synonym: ICSD 14038
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