Mineralogy Database

Holdawayite Mineral Data

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General Holdawayite Information

Help on Chemical Formula: Chemical Formula: Mn++6(CO3)2(OH)7(Cl,OH)
Help on Composition: Composition: Molecular Weight = 599.54 gm
   Manganese  54.98 %  Mn   70.99 % MnO
   Hydrogen    1.22 %  H    10.89 % H2O
   Carbon      4.01 %  C    14.68 % CO2
   Chlorine    4.43 %  Cl    4.43 % Cl
                -   %   Cl   -1.00 % -O=Cl2   
   Oxygen     35.36 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Mn2+6(CO3)2(OH)7.25Cl0.75
Help on IMA Status: IMA Status: Approved IMA 1988
Help on Locality: Locality: 11 level of the Asis West sector of the Kombat mine, located 37 km east of Otavi and 49 km south of Tsumeb in the north-central part of Namibia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Michael J. Holdaway of Southern Methodist University.
Help on Name Pronunciation: Name Pronunciation: Holdawayite + Pronunciation Say HOLDAWAYITE
Help on Synonym: Synonym: ICSD 202600
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