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FOTO ATLAS
SYSTEMATIK


MINERAL CLASSIFICATION / SYSTEMATIK der MINERALE

           based on E.H. Nickel & M.C. Nichols (2009), H. Strunz & E.H. Nickel (2001),
           revised by Thomas Witzke (2022)



9. SILICATES
(Silicates, Germanates)


9.A: Nesosilicates


9.AA. Nesosilicates without aditional anions; cations in tetrahedral [4] coordination
 
9.AA.05. Phenakite group
 
Eucryptite LiAlSiO4 trig., R-3 G
Phenakite Be2SiO4 trig., R-3 G
Willemite Zn2SiO4 trig., R-3 FOTO G


 
9.AA.10. Liberite
 
Liberite Li2BeSiO4 mon., Pn A



 
 
9.AB. Nesosilicates without aditional anions; cations in [4] and greater coordination
 
9.AB.05. Trimerite
 
Trimerite CaMn2Be3(SiO4)3 mon., P21/n G


 
9.AB.10. Larsenite
 
Larsenite PbZnSiO4 orth., Pna21 G


 
9.AB.15. Esperite
 
Esperite PbCa2Zn3(SiO4)3 mon., P21/n IMA 1964-027


 
9.AB.20. Rondorfite
 
Rondorfite Ca8Mg(SiO4)4Cl2 cub., Fd-3 IMA 1997-013



 
 
9.AC. Nesosilicates without aditional anions; cations in octahedral [6] coordination
 
9.AC.05. Olivine group
 
Forsterite Mg2(SiO4) orth., Pbnm FOTO G
Fayalite Fe2(SiO4) orth., Pbnm G
Tephroite Mn2(SiO4) orth., Pbnm FOTO G
Liebenbergite Ni2(SiO4) orth., Pbnm IMA 1972-033
Monticellite CaMg(SiO4) orth., Pbnm G
Glaucochroite CaMn(SiO4) orth., Pbnm G
Kirschsteinite CaFe(SiO4) orth., Pbnm G
Laihunite Fe2+Fe3+2(SiO4)2 mon., P21/a FOTO A (1988-?)


 
9.AC.10. Chesnokovite
 
Chesnokovite Na2(SiO2(OH)2)·8H2O orth., Ibca IMA 2006-007



 
 
9.AD. Nesosilicates without aditional anions; cations in [6] and/or greater coordination
 
9.AD.05. Larnite
 
Larnite Ca2(SiO4) mon., P21/n G


 
9.AD.10. Calcio-olivine
 
Calcio-olivine Ca2(SiO4) orth., Pnma Rd


 
9.AD.15. Flamite
 
Flamite Ca8-x(Na,K)x(SiO4)4-x(PO4)x orth., Pnm21 IMA 2013-122

Flamite is a derivative of the hexagonal α-Ca2SiO4 structure.


 
9.AD.20. Nagelschmidtite
 
Nagelschmidtite Ca7(SiO4)2(PO4)2 hex., P61 A

Nagelschmidtite is a derivative of the hexagonal α-Ca2SiO4 structure.


 
9.AD.25. Merwinite
 
Merwinite Ca3Mg(SiO4)2 mon., P21/a G


 
9.AD.30. Bredigite
 
Bredigite Ca7Mg(SiO4)4 orth., P2nn G


 
9.AD.35. Garnet group [Garnet supergroup]
 
Pyrope Mg3Al2(SiO4)3 cub., Ia-3d G
Knorringite Mg3Cr3+2(SiO4)3 cub., Ia-3d IMA 1968-010
Majorite Mg3SiMg(SiO4)3 cub., Ia-3d IMA 1969-018
Spessartine Mn2+3Al2(SiO4)3 cub., Ia-3d G
Momoiite Mn2+3V3+2(SiO4)3 cub., Ia-3d IMA 2009-026
Calderite Mn2+3Fe3+2(SiO4)3 cub., Ia-3d G
Almandine Fe2+3Al2(SiO4)3 cub., Ia-3d FOTO G
Grossular Ca3Al2(SiO4)3 cub., Ia-3d A
Eringaite Ca3Sc2(SiO4)3 cub., Ia-3d IMA 2009-054
Rubinite Ca3Ti3+2(SiO4)3 cub., Ia-3d IMA 2016-110
Goldmanite Ca3V3+2(SiO4)3 cub., Ia-3d IMA 1963-003
Uvarovite Ca3Cr3+2(SiO4)3 cub., Ia-3d A
Andradite Ca3Fe3+2(SiO4)3 cub., Ia-3d G
Morimotoite Ca3TiFe2+(SiO4)3 cub., Ia-3d IMA 1992-017
Menzerite-(Y) (Y2Ca)Mg2(SiO4)3 cub., Ia-3d IMA 2009-050


 
9.AD.40. Schorlomite group [Garnet supergroup]
 
Hutcheonite Ca3Ti2(SiO4)(AlO4)2 cub., Ia-3d IMA 2013-029
Kimzeyite Ca3Zr2(SiO4)(AlO4)2 cub., Ia-3d A
Irinarassite Ca3Sn2(SiO4)(AlO4)2 cub., Ia-3d IMA 2010-073
Schorlomite Ca3Ti2(SiO4)(Fe3+O4)2 cub., Ia-3d G
Kerimasite Ca3Zr2(SiO4)(Fe3+O4)2 cub., Ia-3d IMA 2009-029
Toturite Ca3Sn2(SiO4)(Fe3+O4)2 cub., Ia-3d IMA 2009-033


 
9.AD.45. Henritermierite group [Garnet supergroup]
 
Holtstamite Ca3Al2(SiO4)2(OH)4 tetr., I41/acd IMA 2003-047
Henritermierite Ca3Mn2(SiO4)2(OH)4 tetr., I41/acd IMA 1968-029, Rn


 
9.AD.50. Nikmelnikovite [Garnet supergroup]
 
Nikmelnikovite Ca12Fe2+Fe3+3Al3(SiO4)6(OH)20 trig., R-3 IMA 2018-043


 
9.AD.55. Jeffbenite
 
Jeffbenite Mg3Al2(SiO4)3 tetr., I-42d IMA 2014-097


 
9.AD.60. Wadalite group
 
Wadalite (Ca,Mg)6(Al,Fe)4((Si,Al)O4)3O4Cl3 cub., I-43d IMA 1987-045
Adrianite Ca12(Al4Mg3Si7)O32Cl6 cub., I-43d IMA 2014-028
Eltyubyuite Ca12(Fe3+10Si4)O32Cl6 cub., I-43d IMA 2011-022


 
9.AD.65. Zircon group
 
Zircon Zr(SiO4) tetr., I44/amd G
Hafnon Hf(SiO4) tetr., I44/amd IMA 1974-018
Stetindite-(Ce) Ce(SiO4) tetr., I44/amd IMA 2008-035
Thorite Th(SiO4) tetr., I44/amd G
Coffinite U(SiO4)·n H2O tetr., I44/amd G


 
9.AD.70. Atelisite-(Y)
 
Atelisite-(Y) Y4Si3O8(OH)8 tetr., I-42d IMA 2010-065


 
9.AD.75. Huttonite
 
Huttonite Th(SiO4) mon., P21/n G


 
9.AD.80. Reidite
 
Reidite Zr(SiO4) tetr., I41/a IMA 2001-013


 
9.AD.85. Eulytine
 
Eulytine Bi4(SiO4)3 cub., I-43d FOTO G



 
 
9.AE. Nesosilicates with additional anions (O,OH,F,H2O); cations in tetrahedral [4] coordination
 
9.AE.05. Sphaerobertrandite
 
Sphaerobertrandite Be3(SiO4)(OH)2 mon., P21/c Rd


 
9.AE.10. Beryllite
 
Beryllite Be3(SiO4)(OH)2·H2O orth. G


 
9.AE.15. Euclase
 
Euclase BeAl(SiO4)(OH) mon., P21/c G


 
9.AE.20. Sverigeite
 
Sverigeite NaMnMgSnBe2(SiO4)3(OH) orth., Imma IMA 1983-066


 
9.AE.25. Hodgkinsonite
 
Hodgkinsonite MnZn2(SiO4)(OH)2 mon., P21/a G


 
9.AE.30. Gerstmannite
 
Gerstmannite MnMgZn(SiO4)(OH)2 orth., Bbcm IMA 1975-030


 
9.AE.35. Clinohedrite
 
Clinohedrite CaZn(SiO4)·H2O mon., Cc G


 
9.AE.40. Stringhamite
 
Stringhamite CaCu(SiO4)·H2O mon., P21/c IMA 1974-007


 
9.AE.45. Katoptrite
 
Katoptrite (Mn2+,Mg)13(Al,Fe3+)4Sb5+2(SiO4)2O20 mon., C2/m G


 
9.AE.50. Yeatmanite
 
Yeatmanite Zn6Mn2+9Sb5+2(SiO4)4O12 tric., P-1 G



 
 
9.AF. Nesosilicates with additional anions; cations in [4], [5] and/or only [6] coordination
 
9.AF.05. Sillimanite
 
Sillimanite Al2(SiO4)O orth., Pbnm G


 
9.AF.07. Andalusite group
 
Andalusite Al2(SiO4)O orth., Pnnm G
Kanonaite MnAl(SiO4)O orth., Pnnm IMA 1976-047


 
9.AF.10. Kyanite
 
Kyanite Al2(SiO4)O tric., P-1 FOTO A


 
9.AF.12. Mullite
 
Mullite Al4+2XSi2-2XO10-X orth., Pbam FOTO G


 
9.AF.15. Boromullite
 
Boromullite Al9BSi2O19 orth., Cmc21 IMA 2007-021


 
9.AF.17. Yoderite
 
Yoderite Mg(Al,Fe)3(SiO4)2O(OH) mon., P21/m A


 
9.AF.20. Staurolite group
 
Magnesiostaurolite Mg(Mg,Li)3(Al,Mg)18Si8O44(OH)4 mon., C2/m IMA 1992-035
Staurolite Fe2Al9Si4O23(OH) mon., C2/m G
Zincostaurolite Zn2Al9Si4O23(OH) mon., C2/m IMA 1992-036


 
9.AF.22. Topaz group
 
Topaz Al2(SiO4)F2 orth., Pbnm FOTO G
Krieselite Al2(GeO4)F2 orth., Pbnm IMA 2000-043a


 
9.AF.25. Norbergite
 
Norbergite Mg3(SiO4)F2 orth., Pnam G


 
9.AF.27. Chondrodite group
 
Chondrodite Mg5(SiO4)2F2 mon., P21/b G
Hydroxylchondrodite Mg5(SiO4)2(OH)2 mon., P21/b IMA 2010-019
Alleghanyite Mn5(SiO4)2(OH)2 mon., P21/b G
Kumtyubeite Ca5(SiO4)2F2 mon., P21/b IMA 2008-045
Reinhardbraunsite Ca5(SiO4)2(OH)2 mon., P21/b IMA 1980-032


 
9.AF.30. Humite group
 
Humite Mg7(SiO4)3(F,OH)2 orth., Pnma G
Manganhumite Mn7(SiO4)3(OH)2 orth., Pbnm IMA 1969-021
Chegemite Ca7(SiO4)3(OH)2 orth., Pbnm IMA 2008-038
Fluorchegemite Ca7(SiO4)3F2 orth., Pbnm IMA 2011-112


 
9.AF.32. Clinohumite group
 
Hydroxylclinohumite Mg9(SiO4)4(OH)2 mon., P21/a IMA 1998-065
Clinohumite Mg9(SiO4)4F2 mon., P21/a G
Sonolite Mn9(SiO4)4(OH)2 mon., P21/a A
Hydroxyledgrewite Ca9(SiO4)4(OH)2 mon., P21/b IMA 2011-113
Edgrewite Ca9(SiO4)4F2 mon., P21/b IMA 2011-058


 
9.AF.35. Ribbeite
 
Ribbeite Mn5(SiO4)2(OH)2 orth., Pnam IMA 1985-045


 
9.AF.37. Leucophoenicite
 
Leucophoenicite Mn7(SiO4)3(OH)2 mon., P21/a G


 
9.AF.40. Jerrygibbsite
 
Jerrygibbsite Mn9(SiO4)4(OH)2 orth., Pbn21 IMA 1981-059


 
9.AF.42. Welinite group
 
Franciscanite Mn2+6(V5+)2(SiO4)2O3(OH)3 trig., P3 IMA 1985-038
Örebroite Mn2+6(Sb5+Fe3+)2(SiO4)2O6 trig., P3 IMA 1985-039
Scorticoite Mn2+6(Sb5+)2(SiO4)2O3(OH)3 trig., P3 IMA 2018-159
Welinite Mn2+6(W6+)2(SiO4)2O4(OH)2 trig., P3 IMA 1966-002
Barwoodite Mn2+6Nb5+(SiO4)2O3(OH)3 trig., P3 IMA 2017-046


 
9.AF.45. Ellenbergerite
 
Ellenbergerite Mg6(Mg,Ti,Zr,)2(Al,Mg)6Si8O28(OH)10 hex., P63 IMA 1984-066


 
9.AF.47. Chloritoid group
 
Magnesiochloritoid MgAl2O(SiO4)(OH)2 mon., C2/c Rn
Chloritoid FeAl2O(SiO4)(OH)2 mon., C2/c G
Ottrélite MnAl2O(SiO4)(OH)2 mon., C2/c G
Carboirite Fe2+Al2O(GeO4)(OH)2 tric., C-1 IMA 1980-066

Chloritoid polytypes: -2M (mon., C2/c), -1A (tric.,C-1).


 
9.AF.50. Poldervaartite group
 
Poldervaartite Ca(Ca,Mn)(SiO3OH)(OH) IMA 1992-012
Olmiite CaMn(SiO3OH)(OH) IMA 2006-026


 
9.AF.52. Paqueite group
 
Paqueite Ca3TiSi2(Al2Ti)O14 trig., P321 IMA 2013-053
Queltite Ca3TiSi2(Fe3+2Si)O14 trig., P321 IMA 2021-032

Paqueite belongs, as the minerals of the Dugganite group, to the Ca3Ga2Ge4O14 structure type.


 
9.AF.55. Ivanyukite group [Pharmacosiderite supergroup]
 
Ivanyukite-Na Na2[Ti4O2(OH)2(SiO4)3]·6H2O cub. IMA 2007-041
Ivanyukite-Cu Cu[Ti4O2(OH)2(SiO4)3]·7H2O cub. IMA 2007-043
Ivanyukite-K K2[Ti4O2(OH)2(SiO4)3]·9H2O cub. IMA 2007-042


 
9.AF.57. Greenwoodite
 
Greenwoodite Ba2-x(V3+OH)xV3+9(Fe3+,Fe2+)2Si2O22 trig., P-3m1 IMA 2010-007



 
 
9.AG. Nesosilicates with additional anions; cations in >[6] +/- [6] coordination
 
9.AG.05. Braunite group
 
Neltnerite CaMn3+6O8(SiO4) IMA 1979-059
Braunite Mn2+Mn3+6O8(SiO4) G
Abswurmbachite Cu2+Mn3+6O8(SiO4) IMA 1990-007
Gatedalite ZrMn2+2Mn3+4O8(SiO4) tetr. IMA 2013-091


 
9.AG.07. Långbanite
 
Långbanite Mn2+4Mn3+9Sb5+O16(SiO4)2 A


 
9.AG.10. Titanite group
 
Titanite CaTiO(SiO4) A
Natrotitanite (Na0.5Y0.5)TiO(SiO4) IMA 2011-033
Vanadomalayaite CaVO(SiO4) IMA 1993-032
Malayaite CaSnO(SiO4) IMA 1964-024
Żabińskiite Ca[Al0.5(Ta,Nb)0.5]O(SiO4) IMA 2015-033


 
9.AG.12. Cerite group
 
Aluminocerite-(Ce) (Ce,REE,Ca)9(Al,Fe3+)(SiO4)3(SiO3OH)4(OH)3 IMA 2007-060
Cerite-(Ce) (Ce,La,Ca)9(Mg,Fe3+)(SiO4)3(SiO3OH)4(OH)3 A
Cerite-(La) (La,Ce,Ca)9(Fe3+,Ca,Mg)(SiO4)3(SiO3OH)4(OH)3 IMA 2001-042
Taipingite-(Ce) Ce7Ca2Mg(SiO4)3(SiO3OH)4F3 trig., R3c IMA 2018-123a


 
9.AG.15. Ulfanderssonite-(Ce)
 
Ulfanderssonite-(Ce) (Ce15Ca)Mg2(SiO4)10(SiO3OH)(OH,F)5Cl3 mon., Cm IMA 2016-107


 
9.AG.17. Trimounsite
 
Trimounsite-(Y) Y2Ti2O5(SiO4) mon., P21/c IMA 1989-042


 
9.AG.20. Mieite
 
Mieite-(Y) Y4TiO(SiO4)2(F,OH)6 orth., Cmcm IMA 2014-020


 
9.AG.22. Sitinakite
 
Sitinakite KNa2Ti4Si2O13(OH)·4H2O IMA 1989-051


 
9.AG.25. Kittatinnyite
 
Kittatinnyite Ca2Mn2+Mn3+2(SiO4)2(OH)4·9H2O IMA 1982-083


 
9.AG.27. Natisite
 
Natisite Na2TiO(SiO4) IMA 1974-035
Paranatisite Na2TiO(SiO4) IMA 1990-016


 
9.AG.30. Törnebohmite group
 
Törnebohmite-(Ce) Ce2Al(SiO4)2(OH) Rn
Törnebohmite-(La) La2Al(SiO4)2(OH) Rn


 
9.AG.32. Kuliokite
 
Kuliokite-(Y) Y4Al(SiO4)2(OH)2F5 IMA 1984-064


 
9.AG.35. Jingwenite-(Y)
 
Jingwenite-(Y) YAlV4+(SiO4)O2(OH)2 mon., I2/a IMA 2021-070


 
9.AG.37. Cayalsite-(Y)
 
Cayalsite-(Y) CaY6Al2(SiO4)4O2F6 orth., Pban IMA 2011-094

Cayalsite-(Y) polytypes: -1O (orth., Pban), -1M (mon., P2/c).


 
9.AG.40. Pilawite-(Y)
 
Pilawite-(Y) Ca2Y2Al4(SiO4)4O2(OH)2 mon., P22/c IMA 2013-125


 
9.AG.42. Chantalite
 
Chantalite CaAl2(SiO4)(OH)4 IMA 1977-001


 
9.AG.45. Vuagnatite group
 
Vuagnatite CaAl(SiO4)(OH) IMA 1975-007
Mozartite CaMn(SiO4)(OH) IMA 1991-016


 
9.AG.47. Hatrurite
 
Hatrurite Ca3SiO5 A


 
9.AG.50. Jasmundite
 
Jasmundite Ca11O2(SiO4)4S IMA 1981-047


 
9.AG.52. Afwillite
 
Afwillite Ca3[SiO4][SiO2(OH)2]·2H2O G


 
9.AG.55. Bultfonteinite
 
Bultfonteinite Ca2SiO3(OH)F·H2O G


 
9.AG.57. Zoltaiite
 
Zoltaiite BaV4+2V3+12Si2O27 IMA 2003-006


 
9.AG.60. Tranquillityite
 
Tranquillityite Fe2+8Ti3Zr2Si3O24 IMA 1971-013



 
 
9.AH. Nesosilicates with CO3, SO4, PO4, etc.
 
9.AH.05. Iimoriite
 
Iimoriite-(Y) Y2(SiO4)(CO3) FOTO IMA 1967-033


 
9.AH.10. Tundrite group
 
Tundrite-(Ce) Na2Ce2TiO2(SiO4)(CO3)2 A
Tundrite-(Nd) Na2Nd2TiO2(SiO4)(CO3)2 Rn


 
9.AH.15. Kihlmanite-(Ce)
 
Kihlmanite-(Ce) Ce2TiO2(SiO4)(HCO3)2(H2O) tric., P-1 IMA 2012-081


 
9.AH.20. Spurrite
 
Spurrite Ca5(SiO4)2(CO3) G


 
9.AH.25. Ternesite group
 
Ternesite Ca5(SiO4)2(SO4) orth., Pnma IMA 1995-015
Silicocarnotite Ca5[(SiO4)(PO4)](PO4) orth., Pnma IMA 2013-139


 
9.AH.30. Galuskinite
 
Galuskinite Ca7(SiO4)3(CO3) mon., P21/c IMA 2010-075


 
9.AH.35. Britholite group [Apatite supergroup]
 
Britholite-(Y) (Y,Ca)5(SiO4)3(OH) metamict, mon. Rn
Britholite-(Ce) (Ce,Ca)5(SiO4)3(OH) metamict, hex., mon. Rn
Fluorbritholite-(Y) (Y,Ca)5(SiO4)3F IMA 2009-005
Fluorbritholite-(Ce) (Ce,Ca)5(SiO4)3F IMA 1991-027
Fluorcalciobritholite (Ca,REE)5(SiO4,PO4)3F hex., P63/m IMA 2006-010
Tritomite-(Y) Y5(SiO4,BO4)3(O,OH,F) metamict Rn
Tritomite-(Ce) Ce5(SiO4,BO4)3(OH,O) metamict Rn
Melanocerite-(Ce) Ce5(SiO4,BO4)3(OH,O) metamict Q

Britholite-(Y): typically metamict, some samples are mon., P21, ps.-hex.
Britholite-(Ce): typically metamict, some samples are hex., P63/m or P63, or mon., P21, ps.-hex.
Melanocerite-(Ce) is very probably identical with Tritomite-(Ce).
Tritomite-(Y) and Tritomite-(Ce) need further study and are possibly identical with Britholite-(Y) and Britholite-(Ce).


 
9.AH.40. Ellestadite group [Apatite supergroup]
 
Hydroxylellestadite Ca5(SiO4)1.5(SO4)1.5(OH) FOTO Rn
Fluorellestadite Ca5(SiO4)1.5(SO4)1.5F IMA 1987-002,Rd
Chlorellestadite Ca5(SiO4)1.5(SO4)1.5Cl IMA 2017-013
Mattheddleite Pb5(SiO4)1.5(SO4)1.5Cl IMA 1985-019


 
8.AH.45. Tsangpoite
 
Tsangpoite Ca5(PO4)2(SiO4) hex. IMA 2014-110

Tsangpoite is dimorphous with Silicocarnotite and structurally probably related to the Apatite group.


 
8.AH.50. Tiberiobardiite
 
Tiberiobardiite Cu9Al(SiO3OH)2(OH)12(H2O)6(SO4)1.5·10H2O trig., R-3 IMA 2016-096
Barrotite Cu9Al(SiO3OH)2(OH)12[(SO4)(HAsO4)0.5]·8H2O trig., P31 IMA 2011-063a

Tiberiobardiite is the silicate analogue of Chalcophyllite. The structure of Barrotite is not exactly known, but it is closely related to Tiberiobardiite and Chalcophyllite.


 
8.AH.55. Zadovite group [Arctite supergroup]
 
Zadovite BaCa6[(SiO4)(PO4)](PO4)2F trig., R3m IMA 2013-031
Aradite BaCa6[(SiO4)(VO4)](VO4)2F trig., R3m IMA 2013-047, Rd
Stracherite BaCa6(SiO4)2[(PO4)(CO3)]F trig., R3m IMA 2016-098
Gazeevite BaCa6(SiO4)2(SO4)2O trig., R3m IMA 2015-037


 
8.AH.60. Nabimusaite group [Arctite supergroup]
 
Nabimusaite KCa12(SiO4)4(SO4)2O2F trig., R3m IMA 2012-057
Dargaite BaCa12(SiO4)4(SO4)2O3 trig., R3m IMA 2015-068
Ariegilatite BaCa12(SiO4)4(PO4)2F2O trig., R3m IMA 2016-100


 
8.AH.65. Aravaite [Arctite supergroup]
 
Aravaite Ba2Ca18(SiO4)6(PO4)3(CO3)F3O trig., R3m IMA 2018-078


 
9.AH.70. Tazzoliite
 
Tazzoliite Ba2CaSr0.5Na0.5Ti2Nb3O13(SiO4)[PO2(OH)2]0.5 orth., Fmmm IMA 2011-018


 
9.AH.75. Byzantievite
 
Byzantievite Ba5(Ca,REE)22(Ti,Nb)18(SiO4)4(PO4,SiO4)4(BO3)9O22(O,F)43(H2O)1.5 trig., R3 IMA 2009-001


 
9.AH.80. Wiklundite
 
Wiklundite Pb2(Mn2+,Zn)3(Fe3+,Mn2+)2(Mn2+,Mg)19(As3+O3)2(SiO4,As5+O4)6(OH)18Cl6 trig., R-3c IMA 2015-057



 
 
9.AJ. Nesosilicates with BO3 triangles and/or B[4], Be[4] tetrahedra, cornersharing with SiO4
 
9.AJ.05. Grandidierite group
 
Grandidierite MgAl3O2(BO3)(SiO4) G
Ominelite FeAl3O2(BO3)(SiO4) IMA 1999-025


 
9.AJ.10. Dumortierite group
 
Magnesiodumortierite MgAl6BSi3O17(OH) IMA 1992-050, Rd
Dumortierite AlAl6BSi3O18 FOTO Rd
Titanoholtite (Ti0.750.25)Al6BSi3O18 IMA 2012-069
Nioboholtite (Nb0.60.4)Al6BSi3O18 IMA 2012-068
Holtite (Ta0.50.5)Al6(Si,Sb)3(BO3)12(O,OH)2.25 IMA 1969-029, Rd


 
9.AJ.15. Garrelsite
 
Garrelsite NaBa3B7Si2O16(OH)4 G


 
9.AJ.20. Datolite group
 
Datolite CaB(SiO4)(OH) G
Homilite Ca2Fe2+B2(SiO4)2O2 G
Minasgeraisite-(Y) Y2CaBe2(SiO4)2O2 IMA 1983-090
Gadolinite-(Y) Y2Fe2+Be2(SiO4)2O2 Rn
Gadolinite-(Ce) Ce2Fe2+Be2(SiO4)2O2 A
Gadolinite-(Nd) Nd2Fe2+Be2(SiO4)2O2 IMA 2016-013
Hingganite-(Y) YBe(SiO4)(OH) IMA 1981-052, Rn
Hingganite-(Ce) CeBe(SiO4)(OH) IMA 2004-004
Hingganite-(Nd) NdBe0.5(SiO4)(OH) IMA 2019-028
Hingganite-(Yb) YbBe(SiO4)(OH) IMA 1982-041
Calcybeborosilite-(Y) (Y,REE,Ca)2(B,Be)2(SiO4)2(OH,O)2 Q


 
9.AJ.25. Stillwellite-(Ce)
 
Stillwellite-(Ce) CeBSiO5 A


 
9.AJ.30. Cappelenite-(Y)
 
Cappelenite-(Y) BaY6B6Si3O24F2 A


 
9.AJ.35. Okanoganite group
 
Okanoganite-(Y) (Y,REE,Ca,Na,Th)16(Fe3+,Ti)(Si,B,P)10(O,OH)38F10 IMA 1979-048
Vicanite-(Ce) (Ca,Ce,La,Th)15As5+(As3+,Na)0.5Fe3+0.7Si6B4(O,F)47 IMA 1991-050
Hundholmenite-(Y) (Y,REE,Ca,Na)15(Al,Fe)CaxAs3+1-x(Si,As5+)Si6B3(O,F)48 FOTO IMA 2006-005
Proshchenkoite-(Y) (Y,REE,Ca,Na,Mn)15Fe2+Ca(P,Si)Si6B3(O,F)48 FOTO IMA 2008-007
Laptevite-(Ce) Ca6(Fe2+,MnFe2+)Y3REE7(SiO4)3(PO4)(B3Si3O18)(BO3)F11 trig. IMA 2011-081
Arrheniusite-(Ce) CaMg(Ce7Y)3Ca5(SiO4)4(Si2B3AsO18)(BO3)F11 trig., R3m IMA 2019-086


 
9.AJ.40. Jadarite
 
Jadarite LiNaB3SiO7 IMA 2006-036



 
 
9.AK. Uranyl Neso- and Polysilicates
 
9.AK.05. Soddyite
 
Soddyite (UO2)2(SiO4)·2H2O G


 
9.AK.10. Sklodowskite group
 
Sklodowskite Mg(UO2)2(SiO3OH)2·6H2O G
Cuprosklodowskite Cu(UO2)2(SiO3OH)2·6H2O G
Oursinite Co(UO2)2(SiO3OH)2·6H2O IMA 1982-051


 
9.AK.15. Uranophane group
 
Natroboltwoodite Na(UO2)(SiO3OH)·1H2O Rn
Boltwoodite (K,Na)(UO2)(SiO3OH)·1.5H2O G
Uranophane-α Ca(UO2)2(SiO3OH)2·5H2O G
Uranophane-β Ca(UO2)2(SiO3OH)2·5H2O G
Kasolite Pb(UO2)(SiO4)·H2O A


 
9.AK.20. Swamboite-(Nd)
 
Swamboite-(Nd) Nd0.333(UO2)(SiO3OH)·∼2.5H2O Rd


 
9.AK.25. Haiweeite
 
Haiweeite Ca(UO2)2(Si5O12)(OH)2·6H2O A
Metahaiweeite Ca(UO2)2Si6O15·nH2O A


 
9.AK.30. Weeksite group
 
Weeksite K2(UO2)2(Si5O13)·4H2O FOTO A
Coutinhoite ThxBa1-2x(UO2)2(Si5O13)·3H2O FOTO IMA 2003-025


 
9.AK.35. Ursilite group
 
Magnioursilite Mg4(UO2)4(Si2O5)5(OH)6·20H2O G
Calcioursilite Ca4(UO2)4(Si2O5)5(OH)6·15H2O G


 
9.AK.40. Uranosilite
 
Uranosilite (UO2)Si7O15 IMA 1981-066






 
 

G = Grandfathered minerals: original description preceded the establishment of the CNMNC in 1959, and generally regarded as a valid species
A or IMA No. = Minerals approved by the CNMNC
Rd = Redefinition of the mineral approved by the CNMNC
Rn = Renamed with approval by the CNMNC
Q = Questionable mineral


© Thomas Witzke (2022)


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