| 一般式 XZ4O8 〔X=Ba,Ca,K,Na,NH4,Sr；Z=Al,B,Si〕 で表わせる単斜、三斜、斜方晶系の珪酸塩鉱物。 | |
| albite | NaAlSi3O8 |
| anorthite | CaAl2Si2O8 |
| anorthoclase | (Na,K)AlSi3O8 |
| banalsite | BaNa2Al4Si4O16 |
| buddingtonite | (NH4)AlSi3O8 |
| celsian | BaAl2Si2O8 |
| dmisteinbergite | CaAl2Si2O8 |
| hyalophane | (K,Ba)Al(Si,Al)3O8 |
| microcline | KAlSi3O8 |
| orthoclase | KAlSi3O8 |
| paracelsian | BaAl2Si2O8 |
| reedmergnerite | NaBSi3O8 |
| sanidine | 単斜晶系のK-Na長石 |
| slawsonite | (Sr,Ca)Al2Si2O8 |
| stronalsite | SrNa2Al4Si4O16 |
| svyatoslavite | CaAl2Si2O8 |