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An analysis of the common silicate minerals Orthoclase or K-feldspar is given in the table...

An analysis of the common silicate minerals Orthoclase or K-feldspar is given in the table below: calculate the atomic proportions and ratio, indicate formula of this mineral and from the ratio, what is the nature?
Oxide Weight% Atomic Weight Atomic Proportion Atomic Ratio
SiO2 64.66 60.08.
Al2O3 19.72 101.96.
CaO 0.34 56.08.
Na2O 3.42 61.98
K2O 11.72 94.20?

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