Mineral. Formula. ________________________________________________________________________ I. a. Axinite ([.Ca][.Mg])^{3}([...B][...Si])^{3} + ([...Al=][...Fe=][...Mn=])^{2}([...Si][...B]) Int. Elaolite ([.K][.Na])^{3}[...Si] + 3[...Al=][...Si] Int. Garnet [.R]^{3}[...Si] + [.R=][...Si] Oligoclase [.Na][...Si] + [...Al=][...Si]^{2} Scapolite ([.Ca][.Na])^{3}[...Si]^{2} + 2[...Al=][...Si] Int. Spodumene ([.Li][.Na])^{3}[...Si]^{2} + 4[...Al=][...Si]^{2}Int. b. Asbestos As Hornblende to II. Augite ([.Ca][.Mg][.Fe][.Mn])^{3}[...Si]^{2} Int. some var. Epidote ([.Ca]Fe)^{3}[...Si] + Int. to III. 2([...Al][...Fe][...Mn])[...Si] Hornblende ([.Ca][.Mg][.Fe])^{4} + ([...Si][...Al=])^{3} Int. some var. Sodalite [.Na]^{3}[...Si] + 3[...Al=][...Si] + NaCl Int. to III. Vesuvian 3([.Ca][.Mg])^{3}[...Si] + 2([...Al=][...Fe=])[...Si] Int. c. Biaxial Mica [.K][...Si] + 4([...Al=][...Fe=])[...Si] to III. Hauyne ([.K][.Na])^{3}[...Si] + 3[...Al=][...Si] + [.Na][...Si] Tourmaline ([.R][...R=][...B])^{4}[...Si]^{3} Int. to V. II. a. Labradorite ([.Ca][.Na][.K])[...Si] + ([...Al=][...Fe=])[...Si] Lepidolite (KNaL)F + ([...Al=][...Fe=])[...Si]^{2}? Ryacolite [.K][...Si] + [...Al=][...Si]^{2} Albite [.Na][...Si] + [...Al=][...Si]^{3} b. Augite [.R]^{3}[...Si]^{2} some var. Actinolite ([.Ca][.Mg][.Fe])^{4}[...Si]^{3} Int. Diopside ([.Ca][.Mg])^{3}[...Si]^{2} | Humboltilite 2([.Ca][.Mg][.Na][.K])[...Si] + ([...Al=][...Fe=])[...Si] Sahlite As Augite Tremolite ([.Ca][.Mg])^{4}[...Si]^{3} c. Pyrope ([.Ca][.Mg][.Fe])^{3}[...Si] + Al[...Si] + m[...Cr]? III. a. Anorthite ([.Ca][.Mg][.Na][.K])^{3}[...Si] + 3([...Al=][...Fe=])[...Si] Nepheline ([.Na][.K][.Ca])^{2}[...Si] + 2[...Al=][...Si] Obsidian [...Si],[...Al=],[...Fe=],[.Fe],[.Ca][.Na][.K] Int. Orthoclase ([.K][.Na])[...Si] + [...Al=][...Si]^{3} Petalite ([.Li][.Na])^{3}[...Si]^{4} + 4[...Al=][...Si]^{4} Pumice [...Si],[...Al=],[.Ca],[.K],[.Na],[.H] Int. b. Gadolinite ([.Y][.Ce][.La][.Fe][.Ca])^{3}[...Si] to V. Nephrite ([.Ca][.Mg][.Fe])^{4}[...Si]^{3}? Int. Wollastonite [.Ca]^{3}[...Si]^{2} | c. Iolite ([.Mg][.Fe])^{3}[...Si]^{2} + 3[...Al=][...Si]