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MINERAL CLASSIFICATION / SYSTEMATIK der MINERALE

           according to E.H. Nickel & M.C. Nichols (2009), H. Strunz & E.H. Nickel (2001)



7. SULFATES
(Sulfates, Selenates, Tellurates, Chromates, Molybdates, Wolframates)


7.C: Sulfates etc. without additional anions, with water


7.CA. With small cations
 
7.CA.05. Group reserved
 

7.CB. With only medium-sized cations
 
7.CB.05. Kieserite group
 
Kieserite Mg(SO4) · H2O mon., C2/c A
Szomolnokite Fe(SO4) · H2O mon., C2/c G
Szmikite Mn(SO4) · H2O mon., C2/c G
Cobaltkieserite Co(SO4) · H2O mon., C2/c IMA 2002-004
Dwornikite Ni(SO4) · H2O mon., C2/c IMA 1981-031
Gunningite Zn(SO4) · H2O mon., C2/c FOTO A
Poitevinite Cu(SO4) · H2O tric., P-1 IMA 1963-010

 
7.CB.10. Bonattite group
 
Bonattite Cu(SO4) · 3 H2O mon., Cc G

 
7.CB.15. Starkeyite group
 
Starkeyite Mg(SO4) · 4 H2O mon., P21/n Rn
Rozenite Fe(SO4) · 4 H2O mon., P21/n Rd
Ilesite Mn(SO4) · 4 H2O mon., P21/n FOTOG
Aplowite Co(SO4) · 4 H2O mon., P21/n IMA 1963-009
Boyleite Zn(SO4) · 4 H2O mon., P21/n FOTO IMA 1977-026
Dobrecite Cd(SO4) · 4 H2O mon., P21/m IMA 2002-034
Cranswickite * Mg(SO4) · 4 H2O mon., Cc IMA 2010-016

 
7.CB.20. Pentahydrite group
 
Pentahydrite Mg(SO4) · 5 H2O tric., P-1 G
Siderotil Fe(SO4) · 5 H2O tric., P-1 Rd
Jokokuite Mn(SO4) · 5 H2O tric., P-1 IMA 1976-045
Chalcanthite Cu(SO4) · 5 H2O tric., P-1 FOTOG
Sanderite Mg(SO4) · 2 H2O Q

 
7.CB.25. Hexahydrite group
 
Hexahydrite Mg(SO4) · 6 H2O mon., C2/c G
Ferrohexahydrite Fe(SO4) · 6 H2O mon., C2/c FOTOA
Chvaleticeite Mn(SO4) · 6 H2O mon., C2/c IMA 1984-059
Moorhouseite Co(SO4) · 6 H2O mon., C2/c IMA 1963-008
Nickelhexahydrite Ni(SO4) · 6 H2O mon., C2/c FOTOA
Bianchite Zn(SO4) · 6 H2O mon., C2/c FOTO G

 
7.CB.30. Retgersite group
 
Retgersite Ni(SO4) · 6 H2O tetr., P41212, P43212 G

 
7.CB.35. Melanterite group
 
Alpersite (Mg,Cu)(SO4) · 7 H2O mon., P21/b IMA 2003-040
Melanterite Fe(SO4) · 7 H2O mon., P21/c G
Mallardite Mn(SO4) · 7 H2O mon., P21/c G
Bieberite Co(SO4) · 7 H2O mon., P21/c G
Boothite Cu(SO4) · 7 H2O mon. G
Zincmelanterite Zn(SO4) · 7 H2O mon. Rn

 
7.CB.40. Epsomite group
 
Epsomite Mg(SO4) · 7 H2O orth., P212121 G
Morenosite Ni(SO4) · 7 H2O orth., P212121 G
Goslarite Zn(SO4) · 7 H2O orth., P212121 G

 
7.CB.45. Alunogen group
 
Alunogen Al2(SO4)3 · 17 H2O tric., P-1 FOTOG
Meta-alunogen Al2(SO4)3 · 13 H2O orth. Q

 
7.CB.50. Coquimbite group
 
Coquimbite Fe2(SO4)3 · 9 H2O trig., P-31c FOTOG
Aluminocoquimbite AlFe(SO4)3 · 9 H2O trig., P-31c IMA 2009-095
Paracoquimbite Fe2(SO4)3 · 9 H2O trig., R-3 G

 
7.CB.55. Rhomboclase group
 
Rhomboclase (H3O)Fe(SO4)2 · 3 H2O orth., Pnma G

 
7.CB.60. Kornelite group
 
Kornelite Fe2(SO4)3 · 7 H2O mon., P21/n G

 
7.CB.65. Quenstedtite group
 
Quenstedtite Fe2(SO4)3 · 11 H2O tric., P-1 G

 
7.CB.70. Lausenite group
 
Lausenite Fe2(SO4)3 · 6 H2O mon. G

 
7.CB.75. Römerite group
 
Römerite Fe2+Fe3+2(SO4)4 · 14 H2O tric., P-1 G
Lizhizhenite ZnFe3+2(SO4)4 · 14 H2O tric., P-1 IMA 1989-002

 
7.CB.80. Ransomite group
 
Ransomite CuFe3+2(SO4)4 · 6 H2O mon., P21/c G

 
7.CB.85. Halotrichite group
 
Pickeringite MgAl2(SO4)4 · 22 H2O mon., P21/a G
Halotrichite FeAl2(SO4)4 · 22 H2O mon., P21/a FOTOG
Apjohnite MnAl2(SO4)4 · 22 H2O mon., P21/a G
Dietrichite ZnAl2(SO4)4 · 22 H2O mon., P21/a G
Wupatkiite CoAl2(SO4)4 · 22 H2O mon., P21/a IMA 1994-019
Bilinite Fe2+Fe3+2(SO4)4 · 22 H2O mon., P21/a G
Redingtonite FeCr2(SO4)4 · 22 H2O Q

 
7.CB.90. Meridianiite group
 
Meridianiite Mg(SO4) · 11 H2O tric., P-1 IMA 2007-011

 
7.CB.95. Caichenyunite group
 
Caichenyunite Fe3Al2(SO4)6 · 30 H2O N





 
7.CC. With medium-sized and large cations
 
7.CC.05. Krausite group
 
Krausite KFe(SO4)2 · H2O mon., P21/m FOTOG

 
7.CC.10. Tamarugite group
 
Tamarugite NaAl(SO4)2 · 6 H2O mon., P21/a FOTOG

 
7.CC.15. Mendozite group
 
Mendozite NaAl(SO4)2 · 11 H2O mon., C2/c G
Kalinite KAl(SO4)2 · 11 H2O mon., C2/c G

 
7.CC.20. Alum group
 
Alum-(Na) NaAl(SO4)2 · 12 H2O cub., Pa-3 Rn
Alum-(K) KAl(SO4)2 · 12 H2O cub., Pa-3 Rn
Lanmuchangite TlAl(SO4)2 · 12 H2O cub., Pa-3 IMA 2001-018
Tschermigite (NH4)Al(SO4)2 · 12 H2O cub., Pa-3 FOTO G
Lonecreekite (NH4)Fe(SO4)2 · 12 H2O cub., Pa-3 IMA 1982-063

 
7.CC.25. Voltaite group
 
Voltaite K2Fe2+5Fe3+3Al(SO4)12 · 18 H2O cub., Fd-3c FOTOG
Zincovoltaite K2Zn5Fe3+3Al(SO4)12 · 18 H2O cub., Fd-3c IMA 1985-059
Ammoniomagnesiovoltaite (NH4)2Mg5Fe3+3Al(SO4)12 · 18 H2O cub., Fd-3c IMA 2009-040
Pertlikite K2(Fe2+,Mg)2(Mg,Fe)4Fe3+2Al(SO4)12 · 18 H2O tetr., I41/acd IMA 2005-055

 
7.CC.30. Kröhnkite group
 
Kröhnkite Na2Cu(SO4)2 · 2 H2O mon., P21/c G

 
7.CC.35. Ferrinatrite group
 
Ferrinatrite Na3Fe(SO4)3 · 3 H2O P-3 FOTO G

 
7.CC.40. Goldichite group
 
Goldichite KFe(SO4)2 · 4 H2O mon., P21/c G

 
7.CC.45. Löweite group
 
Löweite Na12Mg7(SO4)13 · 15 H2O trig., R-3 G

 
7.CC.50. Blödite group
 
Blödite Na2Mg(SO4)2 · 4 H2O mon., P21/a FOTOA
Nickelblödite Na2Ni(SO4)2 · 4 H2O mon., P21/a IMA 1976-014
Changoite Na2Zn(SO4)2 · 4 H2O mon., P21/a IMA 1997-041

 
7.CC.55. Leonite group
 
Leonite K2Mg(SO4)2 · 4 H2O mon., C2/m G
Mereiterite K2Fe(SO4)2 · 4 H2O mon., C2/m IMA 1993-045

 
7.CC.60. Picromerite group
 
Picromerite K2Mg(SO4)2 · 6 H2O mon., P21/a A
Cyanochroite K2Cu(SO4)2 · 6 H2O mon., P21/a G
Boussingaultite (NH4)2Mg(SO4)2 · 6 H2O mon., P21/a FOTOG
Mohrite (NH4)2Fe(SO4)2 · 6 H2O mon., P21/a IMA 1964-023
Nickelboussingaultite (NH4)2Ni(SO4)2 · 6 H2O mon., P21/a FOTOIMA 1975-037

 
7.CC.65. Polyhalite group
 
Polyhalite K2Ca2Mg(SO4)2 · 2 H2O tric., P-1 G

 
7.CC.70. Leightonite group
 
Leightonite K2Ca2Cu(SO4)2 · 2 H2O tric., ps.-orth. G

 
7.CC.75. Amarillite group
 
Amarillite NaFe(SO4)2 · 6 H2O mon., C2/c G

 
7.CC.80. Konyaite group
 
Konyaite Na2Mg(SO4)2 · 5 H2O mon., P21/a IMA 1981-003

 
7.CC.85. Wattevilleite group
 
Wattevilleite Na2Ca(SO4)2 · 4 H2O (?) Q





 
7.CD. With only large cations
 
7.CD.05. Matteuccite group
 
Matteuccite NaH(SO4) · H2O mon., Aa G

 
7.CD.05. Mirabilite group
 
Mirabilite Na2(SO4) · 10 H2O mon., P21/c FOTO G

 
7.CD.15. Lecontite group
 
Lecontite (NH4)Na(SO4) · 2 H2O orth., P212121 G

 
7.CD.20. Hydroglauberite group
 
Hydroglauberite Na10Ca3(SO4)8 · 6 H2O mon. (?) IMA 1968-026

 
7.CD.25. Eugsterite group
 
Eugsterite Na4Ca(SO4)3 · 2 H2O mon. IMA 1980-008

 
7.CD.30. Görgeyite group
 
Görgeyite K2Ca5(SO4)6 · H2O mon., C2/c G

 
7.CD.35. Syngenite group
 
Syngenite K2Ca(SO4)2 · H2O mon., P21/m G
Koktaite (NH4)2Ca(SO4)2 · H2O mon., P21/m G

 
7.CD.40. Gypsum group
 
Gypsum Ca(SO4) · 2 H2O mon., A2/a FOTO G

 
7.CD.45. Bassanite group
 
Bassanite Ca(SO4) · 0.5 H2O mon., I2 FOTO G

 
7.CD.50. Zircosulfate group
 
Zircosulfate Zr(SO4)2 · 4 H2O orth., Fddd A

 
7.CD.55. Schieffelinite group
 
Schieffelinite Pb(TeO4) · H2O orth., Cmcm IMA 1979-043
Chromschieffelinite Pb10Te6O20(OH)14(CrO4) · 5 H2O orth., C2221 IMA 2011-003

 
7.CD.60. Montanite group
 
Montanite Bi2TeO6 · 2 H2O mon. FOTO Q

 
7.CD.65. Běhounekite group *
 
Běhounekite * U(SO4)2 · 4 H2O orth., Pnma IMA 2010-046








in bold: grandfathered, IMA accepted, renamed and redefined (with IMA approval) minerals,
in normal letters: minerals published without IMA approval, questionable minerals, polytypes


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
GROUP = a name used to designate a group of species
N = Mineral published without approval of the CNMNC
Q = Questionable mineral
H = Hypothetical mineral (synthetic, anthropogenic, etc.)
D = Discredited by the CNMNC
Poly = Polytype



© Thomas Witzke / Stollentroll (2007-2012)


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