Silicate Structural Types

Group Structure Composition

• Olivine Isolated Fe and Mg

• Pyroxene Single Chain Ca, Fe, and Mg

• Amphibole Double Chains Ca, Fe, Mg (OH)

• Mica Sheet Silicates K, Na rich (OH)

• Plagioclase Tectosilicates Ca and Na rich

• Alkali Tectosilicates Na and K rich Feldspar

• Quartz Tectosilicates Si

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