Mineralogy Database

Pigeonite Mineral Data

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General Pigeonite Information

Help on Chemical Formula: Chemical Formula: (Mg,Fe++,Ca)(Mg,Fe++)Si2O6
Help on Composition: Composition: Molecular Weight = 219.70 gm
   Calcium     1.82 %  Ca    2.55 % CaO
   Magnesium  14.93 %  Mg   24.77 % MgO
   Iron       13.98 %  Fe   17.99 % FeO
   Silicon    25.57 %  Si   54.70 % SiO2
   Oxygen     43.69 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Mg1.35Fe2+0.55Ca0.1Si2O6
Help on Environment: Environment: Common in rapidly cooled siliceous volcanic rocks. Inverted varieties with exsolved augite are found in layered mafic intrusives. From metamorphosed iron formations.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1900
Help on Locality: Locality: Pigeon Point, Cook Co., Minnesota Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the locality.
Help on Name Pronunciation: Name Pronunciation: Pigeonite + Pronunciation Say PIGEONITE
Help on Synonym: Synonym: ICSD 15197
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