Formulation
Calculations outline:
**Correction factor = (# of oxygens in ideal formula) / (sum of oxygen props.) *Remember to check for electroneutrality
Formulation example:
Mineral: Olivine - ideal formula (Fe,Mg)
**Correction factor = (# of oxygens in ideal formula) / (sum of oxygen props.)
- e.g., for olivine: # of oxygen in ideal formula = 4
- in the table above, the sum of the oxygen proportions for all of the oxides came
to 2.3535
Then the correction factor would be (4) / (2.3535) = 1.699 The composition of the above olivine would then be:
- (Mg
_{1.14}Fe_{0.87}Mn_{0.01})Si_{0.99}O_{4}
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