Elements & minerals common to various magmas

Ultramafic magmas

Olivine - Mg2SiO4 to Fe2SiO4

Pyroxene - Ca(Mg,Fe,Al)(Al,Si)2O6

Mafic (basaltic) magmas

Olivine - Mg2SiO4 to Fe2SiO4

Pyroxene - Ca(Mg,Fe,Al)(Al,Si)2O6

Plagioclase - CaAlSi3O8 to NaAlSi3O8

Intermediate magmas

Plagioclase - CaAlSi3O8 to NaAlSi3O8

Amphibole - NaCa2(Mg,Fe,Al)5(Si,Al)8O22(OH)2

Muscovite/Biotite - KAl2(Si3Al)O10(OH)2

Quartz - SiO2

Felsic (granitic) magmas

Potash Feldspar - KAlSi3O8

Quartz - SiO2

Muscovite/Biotite - KAl2(Si3Al)O10(OH)2

Amphibole - NaCa2(Mg,Fe,Al)5(Si,Al)8O22(OH)2