Home > Dana System



Dana Classification System

Sorosilicates

Mineral Formula Classification
55.  -  Si2O7 groups, generally with no additional anions
 
Barylite BaBe2Si2O7 55.1.1.1
Parakeldyshite Na2ZrSi2O7 55.2.2.3
Leucophanite CaNaBe(Si2O6F) 55.4.2.4
56.  -  Si2O7 with additional O, OH, F and H2O
 
Hemimorphite Zn4Si2O7(OH)2 · H2O 56.1.2.1
56.2.4/ - Cuspidine - wöhlerite group
Låvenite (Na,Ca)2(Mn,Fe2+)(Zr,Ti)Si2O7(O,OH,F)2 56.2.4.4
Wöhlerite NaCa2(Zr,Nb)Si2O7(O,OH,F)2 56.2.4.5
Hiortdahlite (Ca,Na)3(Zr,Ti,Y)Si2O7(O,OH,F)2 56.2.4.7
Rosenbuschite (Ca,Na)3(Zr,Ti,Nb)Si2O8F 56.2.4.8
 
Rinkite (mosandrite) (Na,Ca)3(Ca,Ce,Nd)4Ti[(F,O)2|Si2O7]2 56.2.5.1
Götzenite (Ca,Na)3(Ti,Al)Si2O7(F,OH)2 56.2.5.4
56.2.6a/ - Cuspidine group
Normandite NaCa(Mn,Fe)(Ti,Nb,Zr)Si2O7OF 56.2.6a.2
56.2.6c/ - Lamprophyllite group
Barytolamprophyllite Ba2Na3(Fe3+, Ti4+)3(Si2O7)2(O,OH,F)4 56.2.6c.1
Lamprophyllite Sr2Na3Ti3(Si2O7)2(O,OH,F)4 56.2.6c.4
 
Epistolite Na2(Nb,Ti)2Si2O9 · 9H2O 56.2.7.1
Vuonnemite Na5Nb2Ti3+(Si2O7)2O2F2 · 2Na3PO4 56.4.3.1
58.  -  Insular, mixed, single, and larger tetrahedral groups
58.2.1/ - Epidote group
Allanite-(Ce) (Ce,Y,Ca)2(Fe2+,Fe3+)Al2(SiO4)(Si2O7) 58.2.1a.1
Epidote Ca2(Fe3+,Al)3(SiO4)(Si2O7)(O,OH)2 58.2.1a.7
 
Vesuvianite Ca10Mg2Al4(SiO4)5(Si2O7)2(OH)7 58.2.4.1



Dana System Classes

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40
41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60
61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 U W