| aenigmatite | Na2Fe5TiSi6O20 |
| dorrite | Ca2Mg2Fe4Al4Si2O20 |
| hogtuvaite | (Ca,Na)2(Fe2+,Fe3+,Ti,Mg,Mn,Sn)6(Si,Be,Al)6O20 |
| krinovite | Na2Mg4Cr2Si6O20 |
| makarochkinite | (Ca,Na)2(Fe2+,Fe3+,Ti,Mg)6(Si,Al,Be)6O20 |
| rhoenite | Ca2(Mg,Fe2+,Fe3+,Ti)6(Si,Al)6O20 |
| serendibite | Ca2(Mg,Al)6(Si,Al,B)6O20 |
| welshite | Ca2SbMg4FeSi4Be2O20 |
| wilkinsonite | Na2Fe4Fe2Si6O20 |