Mineralogy Database

Humberstonite Mineral Data

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General Humberstonite Information

Help on Chemical Formula: Chemical Formula: K3Na7Mg2(SO4)6(NO3)2•6(H2O)
Help on Composition: Composition: Molecular Weight = 1,135.32 gm
   Potassium  10.33 %  K    12.45 % K2O
   Sodium     14.17 %  Na   19.11 % Na2O
   Magnesium   4.28 %  Mg    7.10 % MgO
   Hydrogen    1.07 %  H     9.52 % H2O
   Sulfur     16.95 %  S    42.31 % SO3
   Nitrogen    2.47 %  N     9.51 % N2O5
   Oxygen     50.73 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: K3Na7Mg2(SO4)6(NO3)2•6(H2O)
Help on Environment: Environment: Formed by repeated natural leaching of nitrate ore with reprecipitation in irregular pods above the local regolith.
Help on IMA Status: IMA Status: Approved IMA 1970
Help on Locality: Locality: Oficina Alemania and ten km west of Oficina Mar�ia Elena; an ore in the Taltal nitrate district, Antofagasta; locally abundant in near-surface nitrate layers throughout the Atacama Des Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for James Thomas Humberstone (1850-1939), industrial chemist whose contributions permit economical extraction of nitrate from the Chilean deposits.
Help on Name Pronunciation: Name Pronunciation: Humberstonite + Pronunciation Say HUMBERSTONITE
Help on Synonym: Synonym: ICSD 79142
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