This arrangement of mineral species is based on Dana's New Mineralogy by Richard V. Gaines, H. Catherine Skinner, Eugene E. Foord, Brian Mason, and Abraham Rosenzweig, with sections by Vandall T. King, Illustrations by Eric Dowty, (ISBN: 047119310-0) Copyright © 1997, John Wiley & Sons, Inc.". This material is used by permission of John Wiley & Sons, Inc. Follow this link for a short discussion on the Dana Classification Number.
55 Sorosilicate Minerals 55.00 Sorosilicate Minerals Without Dana Classification Numbers 55.00.00 Silicate, Unclassified 55.00.00.00 IMA2009-011 Ba3Na(Fe++,Mn)8Ti4(Si2O7)4O4(OH,F)7 C1 1 55.01 Sorosilicates Sorosilicate Si2O7 Groups, Generally with No Additional Anions with cations in [4] and higher coordination 55.01.01 55.01.01.01 Barylite BaBe2Si2O7 Pn21a mm2 55.01.02 55.01.02.01 Clinobarylite! BaBe2Si2O7 Pmn2 2/m 2/m 2/m 55.02 Sorosilicates Sorosilicate Si2O7 Groups, Generally with No Additional Anions with cations in [6] coordination 55.02.01a Thortveitite group 55.02.01a.01 Gittinsite CaZrSi2O7 C 2/m 2/m 55.02.01a.02 Keiviite-(Y) (Y,Yb)2Si2O7 C 2/m 2/m 55.02.01a.03 Keiviite-(Yb) (Yb,Y)2Si2O7 C 2/m 2/m 55.02.01a.04 Thortveitite (Sc,Y)2Si2O7 C 2/m 2/m 55.02.01b Thortveitite related species 55.02.01b.01 Rowlandite-(Y) Y4Fe++Si4O14F2 (?) None 55.02.01b.02 Thalenite-(Y) Y3Si3O10(OH) P 21/n 2/m 55.02.01b.03 Yttrialite-(Y) (Y,Th)2Si2O7 P 21/m 2/m 55.02.01b.04 Fluorthalenite-(Y)! Y3Si3O10F P 21/m 2/m 55.02.02 Keldyshite group 55.02.02.01 Keldyshite Na2-xHxZrSi2O7•n(H2O) P1 1 55.02.02.02 Khibinskite K2ZrSi2O7 B2/m 2/m 55.02.02.03 Parakeldyshite Na2ZrSi2O7 P1 1 55.02.03 55.02.03.01 Barysilite Pb8Mn(Si2O7)3 R 3c 3 2/m 55.02.04 55.02.04.01 Percleveite-(Ce)! (Ce,La,Nd)2Si2O7 P 41 4 55.03 Sorosilicates Sorosilicate Si2O7 Groups, Generally with No Additional Anions with cations in [7] coordination 55.03.01 55.03.01.01 Rankinite Ca3Si2O7 P 21/a 2/m 55.03.02 55.03.02.01 Jaffeite Ca4(Si3O7)(OH)6 P 3 3 55.04 Sorosilicates Sorosilicate Si2O7 Groups, Generally with No Additional Anions with cations in [8] and lower coordination 55.04.01 Melilite group 55.04.01.01 Akermanite Ca2MgSi2O7 P 421m 4 2m 55.04.01.02 Gehlenite Ca2Al(AlSi)O7 P 421m 4 2m 55.04.01.03 Melilite (Ca,Na)2(Al,Mg,Fe++)(Si,Al)2O7 P 421m 4 2m 55.04.01.04 Okayamalite! Ca2B2SiO7 P 421m 4 2m 55.04.01.05 Alumoakermanite! (Ca,Na)2(Al,Mg,Fe++)(Si2O7) P 421m 4 2m 55.04.02 Fresnoite group 55.04.02.01 Fresnoite Ba2TiSi2O8 P 4bm 4mm 55.04.02.02 Hardystonite Ca2ZnSi2O7 P 421m 4 2m 55.04.02.03 Jeffreyite (Ca,Na)2(Be,Al)Si2(O,OH)7 C 2221 2 2 2 55.04.02.04 Leucophanite (Na,Ca)2BeSi2(O,OH,F)7 P1 1 55.04.02.05 Meliphanite (Ca,Na)2Be[(Si,Al)2O6(F,OH)] I 4 4 55.04.02.06 Gugiaite Ca2BeSi2O7 P 421m 4 2m 55.04.03 55.04.03.01 Belkovite! Ba3(Nb,Ti)6(Si2O7)2O12 P 62m 6 m2 55.04.04 55.04.04.01 Stavelotite-(La)! La3Mn++3Cu++(Mn+++,Fe+++,Mn++++)26(Si2O7)6O30 P 31 3 55.04.05 55.04.05.01 Batisivite! (Ti,V,Cr)14Ba[Si2O7]O22 P1 1 55.05 Sorosilicates Sorosilicate Si2O7 Groups, Generally with No Additional Anions with dimeric cations 55.05.01 55.05.01.01 Edgarbaileyite Hg+6Si2O7 C 2/m 2/m
55.00 Sorosilicate Minerals Without Dana Classification Numbers 55.00.00 Silicate, Unclassified 55.00.00.00 IMA2009-011 Ba3Na(Fe++,Mn)8Ti4(Si2O7)4O4(OH,F)7 C1 1
55.00.00 Silicate, Unclassified 55.00.00.00 IMA2009-011 Ba3Na(Fe++,Mn)8Ti4(Si2O7)4O4(OH,F)7 C1 1
55.01 Sorosilicates Sorosilicate Si2O7 Groups, Generally with No Additional Anions with cations in [4] and higher coordination 55.01.01 55.01.01.01 Barylite BaBe2Si2O7 Pn21a mm2 55.01.02 55.01.02.01 Clinobarylite! BaBe2Si2O7 Pmn2 2/m 2/m 2/m
55.01.01 55.01.01.01 Barylite BaBe2Si2O7 Pn21a mm2
55.01.02 55.01.02.01 Clinobarylite! BaBe2Si2O7 Pmn2 2/m 2/m 2/m
55.02 Sorosilicates Sorosilicate Si2O7 Groups, Generally with No Additional Anions with cations in [6] coordination 55.02.01a Thortveitite group 55.02.01a.01 Gittinsite CaZrSi2O7 C 2/m 2/m 55.02.01a.02 Keiviite-(Y) (Y,Yb)2Si2O7 C 2/m 2/m 55.02.01a.03 Keiviite-(Yb) (Yb,Y)2Si2O7 C 2/m 2/m 55.02.01a.04 Thortveitite (Sc,Y)2Si2O7 C 2/m 2/m 55.02.01b Thortveitite related species 55.02.01b.01 Rowlandite-(Y) Y4Fe++Si4O14F2 (?) None 55.02.01b.02 Thalenite-(Y) Y3Si3O10(OH) P 21/n 2/m 55.02.01b.03 Yttrialite-(Y) (Y,Th)2Si2O7 P 21/m 2/m 55.02.01b.04 Fluorthalenite-(Y)! Y3Si3O10F P 21/m 2/m 55.02.02 Keldyshite group 55.02.02.01 Keldyshite Na2-xHxZrSi2O7•n(H2O) P1 1 55.02.02.02 Khibinskite K2ZrSi2O7 B2/m 2/m 55.02.02.03 Parakeldyshite Na2ZrSi2O7 P1 1 55.02.03 55.02.03.01 Barysilite Pb8Mn(Si2O7)3 R 3c 3 2/m 55.02.04 55.02.04.01 Percleveite-(Ce)! (Ce,La,Nd)2Si2O7 P 41 4
55.02.01a Thortveitite group 55.02.01a.01 Gittinsite CaZrSi2O7 C 2/m 2/m 55.02.01a.02 Keiviite-(Y) (Y,Yb)2Si2O7 C 2/m 2/m 55.02.01a.03 Keiviite-(Yb) (Yb,Y)2Si2O7 C 2/m 2/m 55.02.01a.04 Thortveitite (Sc,Y)2Si2O7 C 2/m 2/m
55.02.01b Thortveitite related species 55.02.01b.01 Rowlandite-(Y) Y4Fe++Si4O14F2 (?) None 55.02.01b.02 Thalenite-(Y) Y3Si3O10(OH) P 21/n 2/m 55.02.01b.03 Yttrialite-(Y) (Y,Th)2Si2O7 P 21/m 2/m 55.02.01b.04 Fluorthalenite-(Y)! Y3Si3O10F P 21/m 2/m
55.02.02 Keldyshite group 55.02.02.01 Keldyshite Na2-xHxZrSi2O7•n(H2O) P1 1 55.02.02.02 Khibinskite K2ZrSi2O7 B2/m 2/m 55.02.02.03 Parakeldyshite Na2ZrSi2O7 P1 1
55.02.03 55.02.03.01 Barysilite Pb8Mn(Si2O7)3 R 3c 3 2/m
55.02.04 55.02.04.01 Percleveite-(Ce)! (Ce,La,Nd)2Si2O7 P 41 4
55.03 Sorosilicates Sorosilicate Si2O7 Groups, Generally with No Additional Anions with cations in [7] coordination 55.03.01 55.03.01.01 Rankinite Ca3Si2O7 P 21/a 2/m 55.03.02 55.03.02.01 Jaffeite Ca4(Si3O7)(OH)6 P 3 3
55.03.01 55.03.01.01 Rankinite Ca3Si2O7 P 21/a 2/m
55.03.02 55.03.02.01 Jaffeite Ca4(Si3O7)(OH)6 P 3 3
55.04 Sorosilicates Sorosilicate Si2O7 Groups, Generally with No Additional Anions with cations in [8] and lower coordination 55.04.01 Melilite group 55.04.01.01 Akermanite Ca2MgSi2O7 P 421m 4 2m 55.04.01.02 Gehlenite Ca2Al(AlSi)O7 P 421m 4 2m 55.04.01.03 Melilite (Ca,Na)2(Al,Mg,Fe++)(Si,Al)2O7 P 421m 4 2m 55.04.01.04 Okayamalite! Ca2B2SiO7 P 421m 4 2m 55.04.01.05 Alumoakermanite! (Ca,Na)2(Al,Mg,Fe++)(Si2O7) P 421m 4 2m 55.04.02 Fresnoite group 55.04.02.01 Fresnoite Ba2TiSi2O8 P 4bm 4mm 55.04.02.02 Hardystonite Ca2ZnSi2O7 P 421m 4 2m 55.04.02.03 Jeffreyite (Ca,Na)2(Be,Al)Si2(O,OH)7 C 2221 2 2 2 55.04.02.04 Leucophanite (Na,Ca)2BeSi2(O,OH,F)7 P1 1 55.04.02.05 Meliphanite (Ca,Na)2Be[(Si,Al)2O6(F,OH)] I 4 4 55.04.02.06 Gugiaite Ca2BeSi2O7 P 421m 4 2m 55.04.03 55.04.03.01 Belkovite! Ba3(Nb,Ti)6(Si2O7)2O12 P 62m 6 m2 55.04.04 55.04.04.01 Stavelotite-(La)! La3Mn++3Cu++(Mn+++,Fe+++,Mn++++)26(Si2O7)6O30 P 31 3 55.04.05 55.04.05.01 Batisivite! (Ti,V,Cr)14Ba[Si2O7]O22 P1 1
55.04.01 Melilite group 55.04.01.01 Akermanite Ca2MgSi2O7 P 421m 4 2m 55.04.01.02 Gehlenite Ca2Al(AlSi)O7 P 421m 4 2m 55.04.01.03 Melilite (Ca,Na)2(Al,Mg,Fe++)(Si,Al)2O7 P 421m 4 2m 55.04.01.04 Okayamalite! Ca2B2SiO7 P 421m 4 2m 55.04.01.05 Alumoakermanite! (Ca,Na)2(Al,Mg,Fe++)(Si2O7) P 421m 4 2m
55.04.02 Fresnoite group 55.04.02.01 Fresnoite Ba2TiSi2O8 P 4bm 4mm 55.04.02.02 Hardystonite Ca2ZnSi2O7 P 421m 4 2m 55.04.02.03 Jeffreyite (Ca,Na)2(Be,Al)Si2(O,OH)7 C 2221 2 2 2 55.04.02.04 Leucophanite (Na,Ca)2BeSi2(O,OH,F)7 P1 1 55.04.02.05 Meliphanite (Ca,Na)2Be[(Si,Al)2O6(F,OH)] I 4 4 55.04.02.06 Gugiaite Ca2BeSi2O7 P 421m 4 2m
55.04.03 55.04.03.01 Belkovite! Ba3(Nb,Ti)6(Si2O7)2O12 P 62m 6 m2
55.04.04 55.04.04.01 Stavelotite-(La)! La3Mn++3Cu++(Mn+++,Fe+++,Mn++++)26(Si2O7)6O30 P 31 3
55.04.05 55.04.05.01 Batisivite! (Ti,V,Cr)14Ba[Si2O7]O22 P1 1
55.05 Sorosilicates Sorosilicate Si2O7 Groups, Generally with No Additional Anions with dimeric cations 55.05.01 55.05.01.01 Edgarbaileyite Hg+6Si2O7 C 2/m 2/m
55.05.01 55.05.01.01 Edgarbaileyite Hg+6Si2O7 C 2/m 2/m