ERTH 114 Earth Materials

Quiz 3 Preparation

Give the chemical compositions of the following minerals:

garnet (Ca,Mg,Fe,Mn)₃Al₂Si₃O₁₂

grossular Ca₃Al₂Si₃O₁₂

pyrope Mg₃Al₂Si₃O₁₂

almandine Fe₃Al₂Si₃O₁₂

spessartine Mn₃Al₂Si₃O₁₂

forsterite (magnesian olivine) Mg₂SiO₄

fayalite (ferrous olivine) Fe₂SiO₄

zircon ZrSiO₄

sphene CaTiSiO₅ (TiSiO₄+CaO)