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Alunite Supergroup

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Formula:
AD3(XO4)2(OH)6
A = Na, K, Pb, Rb, NH4, Ag, or H2O
D = Al, Fe3+, V3+ or Ga3+
Also known as Alunite Family or Alunite Group.
This supergroup includes: Alunite Group, Beudantite Group, Plumbogummite Group and Dussertite Group. Various other names have been used for these groups (see Mills et al. 2009; Bayliss et al. 2010).

Crystals in the group are generally small, imperfect, and rare. Habit is usually either tabular {0001} or pseudo-cubic (cube-like rhombohedron) to pseudo-cuboctahedral.

Classification of Alunite Supergroup

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Chemical Properties of Alunite Supergroup

Formula:
AD3(XO4)2(OH)6

A = Na, K, Pb, Rb, NH4, Ag, or H2O
D = Al, Fe3+, V3+ or Ga3+

Relationship of Alunite Supergroup to other Species

Group Members:
Alunite Group 
  Alunite KAl3(SO4)2(OH)6
  Ammonioalunite (NH4)Al3(SO4)2(OH)6
  Ammoniojarosite (NH4)Fe33+(SO4)2(OH)6
  Argentojarosite AgFe33+(SO4)2(OH)6
  Beaverite-(Cu) Pb(Fe3+,Cu)3(SO4)2(OH)6
  Beaverite-(Zn) Pb(Fe23+Zn)(SO4)2(OH)6
  Dorallcharite TlFe33+(SO4)2(OH)6
  Huangite Ca0.5Al3(SO4)2(OH)6
  Hydroniumjarosite (H3O)Fe33+(SO4)2(OH)6
  Jarosite KFe3+ 3(SO4)2(OH)6
  Natroalunite NaAl3(SO4)2(OH)6
  Natroalunite-2c (Na,Ca0.5,K)Al3(SO4)2(OH)6
  Natrojarosite NaFe3(SO4)2(OH)6
  Osarizawaite Pb(Al,Cu)3(SO4)2(OH)6
  Plumbojarosite Pb0.5Fe33+(SO4)2(OH)6
  Schlossmacherite (H3O)Al3(SO4)2(OH)6
  Walthierite Ba0.5Al3(SO4)2(OH)6
Beudantite Group AM3(XO4)(SO4)(OH)6
  Beudantite PbFe3(AsO4)(SO4)(OH)6
  Corkite PbFe3(PO4)(SO4)(OH)6
  Gallobeudantite PbGa3(AsO4)(SO4)(OH)6
  Hidalgoite PbAl3(AsO4)(SO4)(OH)6
  Hinsdalite PbAl3(PO4)(SO4)(OH)6
  Kemmlitzite SrAl3(AsO4)(SO4)(OH)6
  Svanbergite SrAl3(PO4)(SO4)(OH)6
  Weilerite BaAl3(AsO4)(SO4)(OH)6
  Woodhouseite CaAl3(PO4)(SO4)(OH)6
Dussertite Group 
  Arsenocrandallite CaAl3(AsO4)2(OH)5 · H2O
  Arsenoflorencite-(Ce) CeAl3(AsO4)2(OH)6
  Arsenoflorencite-(La) LaAl3(AsO4)2(OH)6
  Arsenoflorencite-(Nd) NdAl3(AsO4)2(OH)6
  Arsenogorceixite BaAl3(AsO4)2(OH)5 · H2O
  Arsenogoyazite SrAl3(AsO4)2(OH)5 · H2O
  Arsenowaylandite BiAl3(AsO4)2(OH)6
  Dussertite BaFe33+(AsO4)2(OH)5
  Graulichite-(Ce) CeFe33+(AsO4)2(OH)6
  Philipsbornite PbAl3(AsO4)2(OH)5 · H2O
  Segnitite PbFe33+(AsO4)2(OH,H2O)6
Plumbogummite Group 
  Benauite SrFe33+(HPO4,PO4)2(OH)6
  Crandallite CaAl3(PO4)2(OH)5 · H2O
  Eylettersite Th0.75Al3(PO4)2(OH)6
  Florencite-(Ce) CeAl3(PO4)2(OH)6
  Florencite-(La) LaAl3(PO4)2(OH)6
  Florencite-(Nd) (Nd,La,Ce)Al3(PO4)2(OH)6
  Florencite-(Sm) (Sm,Nd)Al3(PO4)2(OH)6
  Galloplumbogummite Pb(Ga,Al)3-xGexH1-x(PO4)2(OH)6 for 0 ≤ x ≤ 1
  Gorceixite BaAl3(PO4)2(OH)5 · H2O
  Goyazite SrAl3(PO4)2(OH)5 · H2O
  Kintoreite PbFe3(PO4)(PO3OH)(OH)6
  Kintoreite-2c PbFe33+(PO4)2(OH,H2O)6
  Plumbogummite PbAl3(PO4)2(OH)5 · H2O
  Springcreekite BaV33+(PO4)2(OH,H2O)6
  Waylandite BiAl3(PO4)2(OH)6
  Zaïrite BiFe33+(PO4)2(OH)6
Unnamed (Ba-Fe Vanadate) Ba, Fe, V, O, H

Other Names for Alunite Supergroup

Name in Other Languages:

Other Information

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Alunite Supergroup

Reference List:
Hendricks (1937) American Mineralogist: 22: 773.

Lemmon (1937) American Mineralogist: 22: 939.

McConnell (1942) American Journal of Science: 240: 649.

Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II. John Wiley and Sons, Inc., New York, 7th edition, revised and enlarged, 1124 pp.: 555-556.

Mills, S.J., Hatert, F., Nickel, E.H. & Ferraris, G. (2009) The standardisation of mineral group hierarchies: application to recent nomenclature proposals. Eur. J. Mineral. 21: 1073–1080.

Sato, E., Nakai, I., Miyawaki, R. & Matsubara, S. (2009): Crystal structures of alunite family minerals: beaverite, corkite, alunite, natroalunite, jarosite, svanbergite, and woodhouseite. Neues Jahrbuch für Mineralogie Abhandlungen 185, 313-322.

Bayliss, P., Kolitsch, U., Nickel, E.H., Pring, A. (2010): Alunite supergroup: recommended nomenclature. Mineralogical Magazine, 74, 919-927.

Grey, I. E. Shanks, F. L. Wilson, N. C. Mumme, W. G. and Birch, W. D. (2011): Carbon incorporation in plumbogummite-group minerals. Mineral. Mag. 75, 145-158.

Internet Links for Alunite Supergroup

Localities for Alunite Supergroup

map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
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