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Ammonioalunite

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About AmmonioaluniteHide

Formula:
(NH4)Al3(SO4)2(OH)6
Colour:
Grayish white
Lustre:
Vitreous
Hardness:
2 - 3
Crystal System:
Trigonal
Name:
The name is derived from "alunite" since it is a member of the Alunite Sub-group. The "Ammonio" prefix designates that it is the (NH4)-dominant member of the sub-group.
This page provides mineralogical data about Ammonioalunite.


Classification of AmmonioaluniteHide

Approved
7.BC.10

7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
B : Sulfates (selenates, etc.) with additional anions, without H2O
C : With medium-sized and large cations
30.2.4.6

30 : ANHYDROUS SULFATES CONTAINING HYDROXYL OR HALOGEN
2 : (AB)2(XO4)Zq
25.1.10

25 : Sulphates
1 : Sulphates of the alkali metals and ammonium

Physical Properties of AmmonioaluniteHide

Vitreous
Transparency:
Transparent, Translucent
Colour:
Grayish white
Comment:
colorless in thin section.
Streak:
white
Hardness:
2 - 3 on Mohs scale
Cleavage:
Perfect
perfect on {0001}(by analogy with the alunite group).

Optical Data of AmmonioaluniteHide

Type:
Uniaxial (+)
RI values:
nω = 1.590 nε = 1.602
Max Birefringence:
δ = 0.012
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate

Chemical Properties of AmmonioaluniteHide

Formula:
(NH4)Al3(SO4)2(OH)6

Crystallography of AmmonioaluniteHide

Crystal System:
Trigonal
Cell Parameters:
a = 7.01 Å, c = 17.88 Å
Ratio:
a:c = 1 : 2.551
Unit Cell V:
760.91 ų (Calculated from Unit Cell)
Morphology:
As rhombohedral crystals, to 20 μm, forming granular masses.

Type Occurrence of AmmonioaluniteHide

Place of Conservation of Type Material:
National Museum of Natural History, Washington, D.C., USA, 145596.
Geological Setting of Type Material:
Formed in hot springs under very acid conditions, rich in ammonium and sulfate, poor in potassium, below 100 C.
Associated Minerals at Type Locality:

Synonyms of AmmonioaluniteHide

Other Language Names for AmmonioaluniteHide

Relationship of Ammonioalunite to other SpeciesHide

Other Members of this group:
AluniteKAl3(SO4)2(OH)6Trig. 3m : R3m
Ammoniojarosite(NH4)Fe3+3(SO4)2(OH)6Trig. 3m : R3m
ArgentojarositeAgFe3+3(SO4)2(OH)6Trig. 3m : R3m
Beaverite-(Cu)Pb(Fe3+2Cu)(SO4)2(OH)6Trig. 3m (3 2/m) : R3m
Beaverite-(Zn)Pb(Fe3+2Zn)(SO4)2(OH)6Trig. 3m (3 2/m) : R3m
DorallchariteTlFe3+3(SO4)2(OH)6Trig. 3m (3 2/m) : R3m
HuangiteCa0.5Al3(SO4)2(OH)6Trig.
Hydroniumjarosite(H3O)Fe3+3(SO4)2(OH)6Trig. 3m (3 2/m) : R3m
JarositeKFe3+ 3(SO4)2(OH)6Trig. 3m (3 2/m) : R3m
NatroaluniteNaAl3(SO4)2(OH)6Trig. 3m : R3m
Natroalunite-2c(Na,Ca0.5,K)Al3(SO4)2(OH)6Trig. 3m (3 2/m) : R3m
NatrojarositeNaFe3(SO4)2(OH)6Trig. 3m : R3m
OsarizawaitePb(Al2Cu2+)(SO4)2(OH)6Trig. 3m (3 2/m) : R3m
PlumbojarositePb0.5Fe3+3(SO4)2(OH)6Trig. 3m (3 2/m) : R3m
Schlossmacherite(H3O)Al3(SO4)2(OH)6Trig.
WalthieriteBa0.5Al3(SO4)2(OH)6Trig.

Common AssociatesHide

Associated Minerals Based on Photo Data:
Kaolinite1 photo of Ammonioalunite associated with Kaolinite on mindat.org.
Pyracmonite1 photo of Ammonioalunite associated with Pyracmonite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

7.BC.Adranosite-(Fe)(NH4)4NaFe3+2(SO4)4Cl(OH)2Tet. 4/mmm (4/m 2/m 2/m) : I41/acd
7.BC.Adranosite(NH4)4NaAl2(SO4)4Cl(OH)2Tet. 4/mmm (4/m 2/m 2/m) : I41/acd
7.BC.05D'AnsiteNa21Mg(SO4)10Cl3Iso.
7.BC.10AluniteKAl3(SO4)2(OH)6Trig. 3m : R3m
7.BC.10Ammoniojarosite(NH4)Fe3+3(SO4)2(OH)6Trig. 3m : R3m
7.BC.10ArgentojarositeAgFe3+3(SO4)2(OH)6Trig. 3m : R3m
7.BC.10Beaverite-(Cu)Pb(Fe3+2Cu)(SO4)2(OH)6Trig. 3m (3 2/m) : R3m
7.BC.10DorallchariteTlFe3+3(SO4)2(OH)6Trig. 3m (3 2/m) : R3m
7.BC.10HuangiteCa0.5Al3(SO4)2(OH)6Trig.
7.BC.10Hydroniumjarosite(H3O)Fe3+3(SO4)2(OH)6Trig. 3m (3 2/m) : R3m
7.BC.10JarositeKFe3+ 3(SO4)2(OH)6Trig. 3m (3 2/m) : R3m
7.BC.10Natroalunite-2c(Na,Ca0.5,K)Al3(SO4)2(OH)6Trig. 3m (3 2/m) : R3m
7.BC.10NatroaluniteNaAl3(SO4)2(OH)6Trig. 3m : R3m
7.BC.10NatrojarositeNaFe3(SO4)2(OH)6Trig. 3m : R3m
7.BC.10OsarizawaitePb(Al2Cu2+)(SO4)2(OH)6Trig. 3m (3 2/m) : R3m
7.BC.10PlumbojarositePb0.5Fe3+3(SO4)2(OH)6Trig. 3m (3 2/m) : R3m
7.BC.10Schlossmacherite(H3O)Al3(SO4)2(OH)6Trig.
7.BC.10WalthieriteBa0.5Al3(SO4)2(OH)6Trig.
7.BC.10Beaverite-(Zn)Pb(Fe3+2Zn)(SO4)2(OH)6Trig. 3m (3 2/m) : R3m
7.BC.15Ye'elimiteCa4Al6(SO4)O12Iso.
7.BC.20AtlasoviteK(BiO)Cu6Fe3+(SO4)5O3ClTet. 4/mmm (4/m 2/m 2/m) : P4/ncc
7.BC.20NabokoiteKCu7(SO4)5(Te4+O3)OClTet.
7.BC.25ChlorothioniteK2Cu(SO4)Cl2Orth. mmm (2/m 2/m 2/m) : Pnma
7.BC.30EuchlorineKNaCu3(SO4)3OMon.
7.BC.30FedotoviteK2Cu3(SO4)3OMon. 2/m : B2/b
7.BC.35KamchatkiteKCu3(SO4)2OClOrth. mmm (2/m 2/m 2/m) : Pnma
7.BC.40PiypiteK4Cu4O2(SO4)4 · (Na,Cu)ClTet.
7.BC.45KlyuchevskiteK3Cu3(Fe3+,Al)(SO4)4O2Mon.
7.BC.45AlumoklyuchevskiteK3Cu3(Al,Fe3+)(SO4)4O2Tric. 1 : P1
7.BC.50CaledonitePb5Cu2(SO4)3(CO3)(OH)6Orth. mm2 : Pmn21
7.BC.55WherryitePb7Cu2(SO4)4(SiO4)2(OH)2Mon. 2/m : B2/m
7.BC.60MammothitePb6Cu4AlSb5+O2(OH)16Cl4(SO4)2Mon. 2 : B2
7.BC.65LinaritePbCu(SO4)(OH)2Mon. 2/m : P21/m
7.BC.65SchmiederitePb2Cu2(Se6+O4)(Se4+O3)(OH)4Mon.
7.BC.65MunakataitePb2Cu2(Se4+O3)(SO4)(OH)4Mon. 2/m : P21/m
7.BC.70ChenitePb4Cu(SO4)2(OH)6Tric. 1 : P1
7.BC.75KrivovichevitePb3Al(OH)6(SO4)(OH)Trig. 3m : R3c
7.BC.80AnhydrokainiteKMg(SO4)Cl

Related Minerals - Dana Grouping (8th Ed.)Hide

30.2.4.1AluniteKAl3(SO4)2(OH)6Trig. 3m : R3m
30.2.4.3Schlossmacherite(H3O)Al3(SO4)2(OH)6Trig.
30.2.4.4OsarizawaitePb(Al2Cu2+)(SO4)2(OH)6Trig. 3m (3 2/m) : R3m
30.2.4.5Natroalunite-2c(Na,Ca0.5,K)Al3(SO4)2(OH)6Trig. 3m (3 2/m) : R3m
30.2.4.7WalthieriteBa0.5Al3(SO4)2(OH)6Trig.
30.2.4.8HuangiteCa0.5Al3(SO4)2(OH)6Trig.

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

25.1.1ThénarditeNa2SO4Orth. mmm (2/m 2/m 2/m) : Fddd
25.1.2MatteucciteNaHSO4 · H2OMon.
25.1.3MirabiliteNa2SO4 · 10H2OMon. 2/m
25.1.4ArcaniteK2SO4Orth. mmm (2/m 2/m 2/m)
25.1.5MercalliteKHSO4Orth. mmm (2/m 2/m 2/m)
25.1.6MiseniteK8H6(SO4)7Mon.
25.1.7Aphthitalite(K,Na)3Na(SO4)2Trig.
25.1.8Mascagnite(NH4)2SO4Orth. mmm (2/m 2/m 2/m) : Pnma
25.1.9Letovicite(NH4)3H(SO4)2Tric.

Other InformationHide

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 AmmonioaluniteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Altaner, S.P., Fitzpatrick, J.J., Krohn, M.D., Bethke, P.M., Hayba, D.O., Goss, J.A., Brown, Z.A. (1988) Ammonium in alunites. American Mineralogist: 73: 145-152.
Bayliss, P., Kolitsch, U., Nickel, E.H., Pring, A. (2010) Alunite supergroup: recommended nomenclature. Mineralogical Magazine: 74: 919-927.
Parafiniuk, J., Kruszewski, Ł. (2010) Minerals of the ammonioalunite–ammoniojarosite series formed on a burning coal dump at Czerwionka, Upper Silesian Coal Basin, Poland. Mineralogical Magazine: 74: 731-745.

Internet Links for AmmonioaluniteHide

Localities for AmmonioaluniteHide

This 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.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Czech Republic
 
  • Central Bohemia Region
Zacek, V., Oplustil, S., Mayova, A. & Meyer, F. R. (1995): Die Mineralien von Kladno in Mittelböhmen, Tschechische Republik. Mineralien-Welt 6 (1), 13-30 (in German).
Tony Nikischer
  • Hradec Králové Region
    • Trutnov (Trautenau)
      • Radvanice
Jirásek, J.: Thermal Changes of the Rocks in the Dump Pile of the Kateřina Colliery in Radvanice (Eastern Bohemia). Ostrava: VSB – Technical University of Ostrava, Institute of Geological Engineering - 541, 2001. 69 p.
Germany
 
  • North Rhine-Westphalia
    • Aachen
      • Alsdorf
Witzke, T., de Wit, F., Kolitsch, U. and Blaß, G. (2015): Mineralogy of the Burning Anna I Coal Mine Dump, Alsdorf, Germany. Chapter 7, pp. 203-240, in: Stracher, G. B., Prakash, A. and Sokol, E. V.: Coal and Peat Fires: A Global Perspective, Volume 3: Case Studies - Coal Fires, Elsevier, 786 pp.
  • Thuringia
    • Gera
      • Ronneburg U deposit
T. Witzke & F. Rüger: Lapis 1998(7/8), 26-64
Hungary
 
  • Baranya Co.
    • Mecsek Mts
      • Pécs
Szabó, D., Lovász, A., Weiszburg, T., Szakáll, S., Kristály, F. (2015): Ammonioalunite and adranosite-Al. New mineral species from the burning coal dumps of Pécs-Vasas, Hungary. Poster session presented at: 6th Mineral Sciences in the Carpathians Conference; 2015 May 16-19; Veszprém, Hungary.
Poland
 
  • Upper Silesia (Śląskie)
    • Rybnik District
      • Czerwionka-Leszczyny Commune
Parafiniuk, J. and Kruszewski, Ł. (2009): Ammonium minerals from burning coal-dumps of the Upper Silesian Coal Basin (Poland). Geol. Quart., 53, 341-356. http://www.pgi.gov.pl/images/stories/G_Q/53_3/parafiniuk.pdf]
    • Upper Silesian Coal Basin
      • Rybnik Coal Area
Ciesielczuk, J., Misz-Kennan, M., Hower, J. C., & Fabiańska, M. J. (2014). Mineralogy and geochemistry of coal wastes from the Starzykowiec coal-waste dump (Upper Silesia, Poland). International Journal of Coal Geology, 127, 42-55.
USA
 
  • California
    • Napa Co.
      • Knoxville District
        • Knoxville
Journal of Volcanology & Geothermal Resources: 56: 401-414.
    • Sonoma Co.
      • Mayacmas Mts (Mayacamas Mts)
        • West Mayacmas District
American Mineralogist (1988): 73: 145-152.; Dunning, G. S. & Cooper, J. F. (1993): History and minerals of The Geysers Sonoma County, California. Mineralogical Record 24 (5): 339-352
  • Nevada
    • Elko Co.
Jour.Volcanology & Geothermal Res. 56:401-414; American Mineralogist (1988): 73: 145-152.
    • Washoe Co.
      • Nightingale District
NBMG Spec. Pub. 31 Minerals of Nevada
Mineral and/or Locality  
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