8 Structures
Feldspar Group l Most abundant mineral in the crust 6 of 7 most common elements l Defined through 3 end- members F Albite (Na), Anorthite (Ca), Orthoclase.
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Mineral Structures
Minerlaogi II Average Composition of the Continental Crust Weight PercentVolume Percent Si O O Table 3.4.
Feldspar Group
