Olivine Group

Calcic (Monticellite,Kirschteinite)

Ca(Mg,Fe)SiO₄

Non Calcic (Forsterite,Fayalite)

(Mg,Fe)₂SiO₄

Pyroxene Group

Clinopyroxenes (diposide,hedenbergite)

Ca(Mg,Fe)SiO₆

Orthopyroxenes (enstatite,ferrosilite)

(Mg,Fe)SiO₃

Amphibole Group

Calcic amphiboles

(tremolite, actinolite, ferroactinolite)

Ca₂(Mg,Fe)₅Si₈O₂₂(OH)₂

Non-Calcic Amphiboles

(orhtorhombic anthophylite/monoclinic cummingtonite and grunerite series)

(Mg,Fe)₇Si₈O₂₂(OH)₂

Mica Group

Dioctahedral Micas (muscovite)

KAl₂(AlSi₃O₁₀)(OH)₂

Trioctahedral Micas (Biotite Series)

K(Mg,Fe)₃(AlSi₃O₁₀)(OH)₂

Framwork Silicates

Feldspars

Plagioclase (Albite,Anorthite)

(Ca,Na)(Al,Si)AlSi₂O₈

Orthoclase 

(K,Na)AlSi₃O₈

Felspathoids

Nepheline - NaAlSiO₄

Leucite - NaAlSi₂O₆

Kalsilite - KAlSiO₄