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Hoelzel Classification

9 SILICATES

9.C Cyclosilicates

9.CG ~[Si3O9]6-- + ~[Si9O27]18--Rings Eudialyte-Group

9.CG.1 Eudialyte-Group - c=30, Fe- Series
Eudialyte Na15Ca6(Fe2+,Mn2+)3Zr3[(Cl,OH)|Si(O,OH,H2O)2|Si3O9|Si9O27]2 trigonal R3m 3m 9.CG.100
Davinciite Na12K3Ca6Fe2+3Zr3(Si26O73OH)Cl2 trigonal R3m 3m 9.CG.105
Fengchengite Na12☐3(Ca,Sr)6Fe3+3Zr3Si(Si25O73)(H2O,OH)3(OH,Cl)2 trigonal R3m 3m 9.CG.105
Feklichevite Na11Ca9(Fe3+,Fe2+)2Zr3Nb(Si25O73)(OH,H2O,Cl,O)5 trigonal R3m 3m 9.CG.110
Golyshevite (Na,Ca)10Ca9Fe2Zr3NbSi25O72(OH)3CO3·H2O trigonal R3m 3m 9.CG.115
Mogovidite Na9(Ca,Na)6Ca6Fe2Zr3☐Si25O72(CO3)(OH)4 trigonal R3m 3m 9.CG.117
Ferrokentbrooksite Na15Ca6Fe2+3Zr3Nb(Si25O73)(O,OH,H2O)3(F,Cl)2 trigonal R3m 3m 9.CG.120
Raslakite Na15Ca3Fe3(Na,Zr)3Zr3Nb<0.5[(Cl,OH)|(Si3O9)2|(Si9O27)2·SiO]·3(OH,H2O) trigonal R3 3 9.CG.130
Georgbarsanovite Na12(Mn,Sr,REE)3Ca6Fe2+3Zr3NbSi25O76Cl2·H2O trigonal R3m 3m 9.CG.140
Ikranite (Na,H3O)15(Ca,Mn)6Fe23+Zr3-4[Cl|{Si3O6(O,OH)3}2|(Si9O27)2·0-1 SiO] ·2-3 H2O trigonal R3m 3m 9.CG.150
Taseqite Na12Sr3Ca6Fe3Zr3NbSi25O73(O,OH,H2O)3Cl2 trigonal R3m 3m 9.CG.160
Khomyakovite Na12Sr3Ca6(Fe2+Mn2+)3Zr3(W,Nb)[(OH,Cl)|Si0.5(O,OH)2|Si3O9|Si9O27]2 trigonal R3m 3m 9.CG.170
Aqualite (H3O)8(Na, K, Sr)5Ca6Zr3Si26O66(OH)9Cl trigonal R3 3 9.CG.190

9.CG.2 Eudialyte-Subgroup - c=30, Mn- Series
Oneillite Na15Ca3Mn3Fe3Zr3Nb(Si25O73)(O,OH,H2O)3(OH,Cl)2 trigonal R3 3 9.CG.200
Voronkovite Na15(Na,Ca,Ce)3(Mn,Ca)3Fe3Zr3Si26O72(OH,O)4Cl·H2O trigonal R3 3 9.CG.205
Kentbrooksite Na15(Ca,Ce,La)6(Mn2+,Fe2+)3Zr3Nb[O|(F,Cl,OH)|Si3O9|Si9O27]2·2H2O trigonal R3m 3m 9.CG.230
Manganokhomyakovite Na12Sr3Ca6(Mn2+,Fe2+)3Zr3(W,Nb)[(OH,Cl)|Si0.5(O,OH)2|Si3O9|Si9O27]2 trigonal R3m 3m 9.CG.250
Johnsenite-(Ce) Na12(Ce,REE,Sr)3Ca6Mn3Zr3W(Si25O73)(OH)3(CO3)·H2O trigonal R3m 3m 9.CG.255
Carbokentbrooksite Na11-12(Na,Ce)3Ca6Mn3Zr3Nb[(OH)3|CO3|(Si3O9)2|(Si9O27)2·SiO]·H2O trigonal R3m 3m 9.CG.260
Andrianovite Na12(K,Sr,Ce)3Ca6Mn3Zr3NbSi25O73(O,H2O,OH)5 trigonal R3m 3m 9.CG.265
Zirsilite-(Ce) (Na,☐)12(Ce,Na)3Ca6Mn3Zr3NbSi25O73(OH)3(CO3)·H2O trigonal R3m 3m 9.CG.270
Manganoeudialyte Na14Ca6Mn3Zr3[Si26O72(OH)2](H2O,Cl,O,OH)6 trigonal R3m 3m 9.CG.280

9.CG.3 Eudialyte-Subgroup - c=60 Series
Alluaivite Na19(Ca,Mn2+)6(Ti,Nb)3(Si3O9)2(Si10O28)2Cl·2H2O trigonal R3m 3m 9.CG.300
Rastsvetaevite Na27K8Ca12Fe3Zr6Si52O144(OH,O)6Cl2 trigonal R3m 3m 9.CG.330
Labyrinthite (Na,K,Sr)35Ca12Fe3Zr6TiSi51O144(O,OH,H2O)9Cl13 trigonal R3 3 9.CG.335
Dualite Na30(Ca,Na,Ce,Sr)12(Na,Mn,Fe,Ti)6Zr3Ti3MnSi51O144(OH,H2O,Cl)9 trigonal R3m 3m 9.CG.350



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