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Strunz Classification System

VI  -  Sulfates, chromates, molybdates and tungstates

Mineral Formula Classification
A  -  Water-free sulfates [SO4]2-without unfamiliar anions
Series 7  -  Thenardite - mascagnite series
Thenardite Na2SO4  VI / A.7-10
Series 9  -  Barite group
Celestine SrSO4  VI / A.9-10
Barite BaSO4  VI / A.9-20
Anglesite PbSO4  VI / A.9-50
B  -  Water-free sulfates [SO4]2-with unfamiliar anions
Series 1  -  Brochantite series (dolerophanite - brochantite)
Brochantite Cu4(SO4)(OH)6  VI / B.1-30
Series 11  -  Alunite group (natroalunite - jarosite - beaverite)
Jarosite K2Fe63+(SO4)4(OH)12  VI / B.11-60
Series 12  -  Sulphohalite - caracolite series
Schairerite Na21(SO4)7F6Cl  VI / B.12-30
Kogarkoite Na3(SO4)F  VI / B.12-40
C  -  Water-bearing sulfates without unfamiliar anions
Series 1  -  Kieserite group
Szomolnokite Fe2+SO4 · H2 VI / C.1-20
Series 3  -  Rozenite series (starkeyite - boyleite)
Rozenite FeSO4 · 4H2 VI / C.3-20
Boyleite ZnSO4 · 4H2 VI / C.3-50
Series 6  -  Melanterite group
Melanterite Fe2+SO4 · 7H2 VI / C.6-10
Series 08  -  Rhomboclase - Meta-alunogen series
Paracoquimbite (Fe3+)2(SO4)3 · 9 H2 VI / C.08-50
Series 11  -  Römerite - Ransomite series
Römerite Fe3(SO4)4 · 14 H2 VI / C.11-10
Series 12  -  Halotrichite group (pickeringite - bilinite)
Halotrichite Fe2+Al2(SO4)4 · 22 H2 VI / C.12-20
Series 19  -  Picromerite group
Mohrite (NH4)2Fe(SO4)2 · 6 H2 VI / C.19-50
Series 22  -  Bassanite - ardealite series
Gypsum CaSO4 · 2H2 VI / C.22-20
D  -  Water-bearing sulfates with unfamiliar anions
Series 3  -  Langite series
Posnjakite Cu4(SO4)(OH)6 · H2 VI / D.3-10
Langite Cu4(SO4)(OH)6 · 2H2 VI / D.3-20
Series 4  -  Mooreite - hauckite series
Shigaite NaMn62+Al3[(OH)18|(SO4)2 · 12H2 VI / D.4-40
G  -  Molybdates and wolframates
Series 1  -  Scheelite - wulfenite series (powellite - raspite)
Scheelite CaWO4  VI / G.1-20
Wulfenite PbMoO4  VI / G.1-30


Strunz Classification System
I - II - III - IV - V - VI - VII - VIII/A - VIII/B - VIII/C -
VIII/D - VIII/E - VIII/F - VIII/G - VIII/H - VIII/J - SW