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Dana Classification System

Cyclosilicates

Mineral Formula Classification
59.  -  Three-membered rings
59.1.1/ - Benitoite group
Wadeite K2ZrSi3O9 59.1.1.4
 
Paraumbite K3Zr2HSi6O18 · nH2O 59.2.1.2
59.2.2/ - Benitoite group, catapleiite subgroup
Catapleiite (Na,Ca)2ZrSi3O9 · 2H2O 59.2.2.1
Gaidonnayite (Na,K)2ZrSi3O9 · 2H2O 59.2.2.3
Bobtraillite Na15Sr12Zr14Si42B6O138 · 12 H2O 59.2.2.6
Hilairite Na2ZrSi3O9 · 3H2O 59.2.3.1
Calciohilairite CaZrSi3O9 · 3H2O 59.2.3.2
 
Sazykinaite-(Y) Na5YZrSi6O18 · 6H2O 59.2.3.3
60.  -  Four-membered rings
60.1.1a/ - Joaquinite group, joaquinite subgroup
Joaquinite-(Ce) NaFe2+Ba2Ce2(Ti,Nb)2(Si4O12)2
     (OH,F) · H2O
60.1.1a.1
60.1.1b/ - Joaquinite group, orthojoaquinite subgroup
Ortho-joaquinite-(Ce) NaFe2+Ba2Ce2Ti2(Si4O12)2O2
     (OH) · H2O
60.1.1b.1
 
Nenadkevichite (Na,K,Ca,Ba,Mn)(Nb,Ti)(Si2O6)
     (O,OH) · 2H2O
60.1.3.1
Labuntsovite-Mn (K,Ba,Na)8(Ti,Nb)9(SiO3)16(O,OH)10 ·
     xH2O
60.1.3.2
Korobitsynite Na3(Ti,Nb)2[Si4O12](OH,O)2 · 3-4H2O 60.1.3.3
Tsepinite-Na (Na,H3O,K,Sr,Ba)2(Ti,Nb)2[Si4O12](OH,O) · 3H2O 60.1.3b.2
Kainosite-(Y) Ca2(Y,Ce)2Si4O12(CO3) · H2O 60.2.1.1
61.  -  Six-membered rings
61.1.1/ - Beryl group
Beryl Be3Al2Si6O18 61.1.1.1
61.1.2a/ - Lovozerite group
Lovozerite Na2Ca(Zr,Ti)Si6(O,OH)18 61.1.2a.1
Kapustinite Na5.5Mn0.25ZrSi6O16(OH)2 61.1.2a.6
61.1.2b/ - Lovozerite group, related structures
Petarasite Na5Zr2Si6O18(Cl,OH) · 2H2O 61.1.2b.3
Litvinskite Na2([ ],Na,Mn)ZrSi6O12(OH,O)6 61.1.2b.4
61.2.1/ - Beryl - cordierite group
Cordierite (Mg,Fe2+)2Al3(AlSi5O18) · H2O 61.2.1.1
 
Phosinaite-(Ce) Na13Ca2Ce(Si4O12)(PO4)4 61.2.2.1
61.3.1/ - Tourmaline group, sodic tourmaline subgroup
Dravite NaMg3Al6(BO3)3Si6O18(OH)4 61.3.1.9
Schorl NaFe32+Al6(BO3)3Si6O18(OH)4 61.3.1.10
 
Abenakiite-(Ce) Na26REE6(SiO3)6(PO4)6(CO3)6
     (S4+O2)O
61.4.1.1
Steenstrupine-(Ce) Na14Ce6Mn2+Mn3+Fe22+(Zr,Th)(OH)2
     (PO4)7(Si6O18)2 · 3H2O
61.4.2.1
63.  -  Condensed rings
 
Steacyite K0.6-0.8(Ca,Na)2ThSi8O20 63.1.1.1
63.2.1a/ - Milarite group
Poudretteite KNa2B3Si12O30 63.2.1a.8
Sugilite KNa2(Fe3+,Fe2+,Mn2+,Al)2Li3
     Si12O30 · nH2O
63.2.1a.9
Milarite K2Ca4Al2Be4Si24O60 · H2O 63.2.1a.11
64.  -  Rings with other anions and insular silicate groups
 
Eudialyte Na4(Ca,Ce)2(Fe2+,Mn,Y)ZrSi8O22
     (OH,Cl)2
64.1.1.1
Kentbrooksite (Na,REE)15(Ca,REE)6Mn3Zr3
     NbSi25O74F2 · 2H2O
64.1.1.3
Khomyakovite Na12Sr3Ca6Fe3Zr3W(Si25O73)
     (O,OH,H2O)3(OH,Cl)2
64.1.1.4
Manganokhomyakovite Na12Sr3Ca6Mn3Zr3W(Si25O73)
     (O,OH,H2O)3(OH,Cl)2
64.1.1.5
Oneillite Na15Ca3Mn3Fe3Zr3Nb(Si25O73)
     (O,OH,H2O)3(OH,Cl)2
64.1.1.6
Ferrokentbrooksite Na15Ca6(Fe,Mn)3Zr3NbSi25O73
     (O,OH,H2O)3(Cl,F,OH)2
64.1.1.7
Zirsilite-(Ce) (Na,[ ])12(Ce, Na)3Ca6Mn3Zr3Nb(Si25O73)(OH)3(CO3) · H2O 64.1.1.13



Dana System Classes

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