bsidian [...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]

IV.
a. Beryl [...Be][...Si]^{2} + [...Al=][...Si]^{2}
b. Diallage ([.Ca][.Mg][.Fe])^{3}([...Si][...Al=])^{2}
Hypersthene ([.Mg][.Fe])^{3}[...Si]^{2} |
c. Fuchsite ([.K]^{5}[...Si])^{2} +
9([...Al=][...Cr=])^{6}[...Si]^{6}
V.
a. Leucite [.K]^{3}[...Si]^{2} + [...Al=][...Si]^{2}
b. Chondrodite ([.Mg],[.Mg]F)^{4}([...Si]SiF^{3})
Olivine ([.Mg][.Fe][.Ca])^{2}[...Si]
c. Andalusite ([...Al=]Fe)^{3}[...Si]^{2}
Chrysoberyl [...Be] + [...Al=]
Kaynite [...Al=]^{3}[...Si]^{2}
Pycnite 6[...Al=]^{3}[...Si]^{2} + (3[...Al=]F^{3} +
2[...Si]F^{3})
Topaz 6[...Al=]^{3}[...Si]^{2} + (3[...Al=]F^{3} +
2[...Si]F^{3})
Zircon [...Zr=][...Si]
Staurolite ([...Al=]Fe)^{2}[...Si]
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Hydrous Silicates.
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Fus. alone and with NaC.

Mineral. Formula.
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I.
a. Analcime [.Na]^{3}[...Si]^{2} + 3[...Al=][...Si]^{2}
+ 6[.H] Int.
Apophyllite ([.K], KF)([...Si], SiF^{3}) + 6[.Ca][...Si] +
15[.H] Int.
Brewsterite ([.Sr][.Ba])[...Si] + [...Al=][...Si]^{3} + 5[.H] Int.
Chabasite ([.Ca],[.Na],[.K])^{3}[...Si] +
3[...Al=][...Si]^{2} + 18[.H] Int.
Lapis Lazuli [...Si],[...S],[...Al=], Fe, [.Ca], [.Na], [.H]
Laumonite [.Ca]^{3}[...Si]^{2} + 3[...Al=][...Si]^{2}
+ 12[.H] Int.
Mesotype ([.Na][.Ca])[...Si] + [...Al=][...Si] + 3[.H] Int.
Natrolite [.Na][...Si] + [...Al=][...Si] +