Ammoniojarosite
A valid IMA mineral species - grandfathered
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About Ammoniojarosite
Formula:
(NH4)Fe3+3(SO4)2(OH)6
Colour:
Light yellow; light yellow to nearly colourless in transmitted light.
Lustre:
Waxy, Dull, Earthy
Hardness:
3½ - 4½
Specific Gravity:
3.112 (Calculated)
Crystal System:
Trigonal
Member of:
Name:
In allusion to its composition containing dominant AMMONIum, and its relationship to JAROSITE.
Type Locality:
Unique Identifiers
Mindat ID:
205
Long-form identifier:
mindat:1:1:205:9
IMA Classification of Ammoniojarosite
Approved, 'Grandfathered' (first described prior to 1959)
First published:
1927
Classification of Ammoniojarosite
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
7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
B : Sulfates (selenates, etc.) with additional anions, without H2O
C : With medium-sized and large cations
30.2.5.4
30 : ANHYDROUS SULFATES CONTAINING HYDROXYL OR HALOGEN
2 : (AB)2(XO4)Zq
30 : ANHYDROUS SULFATES CONTAINING HYDROXYL OR HALOGEN
2 : (AB)2(XO4)Zq
25.11.14
25 : Sulphates
11 : Sulphates of Fe and other metals
25 : Sulphates
11 : Sulphates of Fe and other metals
Mineral Symbols
As of 2021 there are now IMAâCNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference |
|---|---|---|
| Ajrs | IMAâCNMNC | Warr, L.N. (2021). IMAâCNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Ammoniojarosite
Waxy, Dull, Earthy
Transparency:
Transparent, Translucent
Colour:
Light yellow; light yellow to nearly colourless in transmitted light.
Hardness:
3½ - 4½ on Mohs scale
Density:
3.112 g/cm3 (Calculated)
Optical Data of Ammoniojarosite
Type:
Uniaxial (-)
RI values:
nω = 1.800 nε = 1.750
Max. Birefringence:
δ = 0.050
Based on recorded range of RI values above.
Based on recorded range of RI values above.
Interference Colours:
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 ”m thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars.
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 ”m thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars.
Surface Relief:
Moderate
Chemistry of Ammoniojarosite
Mindat Formula:
(NH4)Fe3+3(SO4)2(OH)6
Element Weights:
Crystallography of Ammoniojarosite
Crystal System:
Trigonal
Class (H-M):
3m - Ditrigonal Pyramidal
Space Group:
R3m
Cell Parameters:
a = 7.32 Å, c = 17.5 Å
Ratio:
a:c = 1 : 2.391
Unit Cell V:
812.07 Ă
Âł (Calculated from Unit Cell)
Morphology:
Small lumps and irregular flattened nodules comprised of microscopic tabular grains with hexagonal outlines at times.
Crystal Structure
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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
| ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
|---|---|---|---|---|---|---|---|
| 0014580 | Ammoniojarosite | Basciano L C, Peterson R C (2007) The crystal structure of ammoniojarosite, (NH4)Fe3(SO4)2(OH)6 and the crystal chemistry of the ammoniojarosite-hydronium jarosite solid-solution series Mineralogical Magazine 71 427-441 | 2007 | Synthetic | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 3.114 Ă | (100) |
| 3.097 Ă | (100) |
| 5.123 Ă | (58) |
| 1.988 Ă | (30) |
| 1.832 Ă | (30) |
| 2.318 Ă | (21) |
| 5.811 Ă | (14) |
Comments:
Synthetic.
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 10a: Neoproterozoic oxygenation/terrestrial biosphere | <0.6 |
| 50 : Coal and/or oil shale minerals | <0.36 |
| Stage 10b: Anthropogenic minerals | <10 Ka |
| 54 : Coal and other mine fire minerals (see also #51 and #56) | |
| 55 : Anthropogenic mine minerals |
Type Occurrence of Ammoniojarosite
General Appearance of Type Material:
Small lumps and hard irregular flattened nodules up to 4 cm across by 5 mm thick embedded in blackish-brown lignitic material. With magnification, it is seen to form minute, transparent, pale-yellow, tabular grains including a few showing hexagonal outlines.
Place of Conservation of Type Material:
National Museum of Natural History, Washington, D.C., USA, 95654.
Geological Setting of Type Material:
Formed in black lignitic shales containing pyrite.
Associated Minerals at Type Locality:
Synonyms of Ammoniojarosite
Other Language Names for Ammoniojarosite
Dutch:Ammoniojarosiet
French:Ammoniojarosite
German:Ammoniojarosit
Norwegian:Ammoniojarositt
Russian:ĐĐŒĐŒĐŸĐœĐžĐŸŃŃĐŸĐ·ĐžŃ
Spanish:Ammoniojarosita
Relationship of Ammoniojarosite to other Species
Member of:
Other Members of Alunite Group:
| Alunite | KAl3(SO4)2(OH)6 | Trig. 3m : R3m |
| Ammonioalunite | (NH4)Al3(SO4)2(OH)6 | Trig. |
| Argentojarosite | AgFe3+3(SO4)2(OH)6 | Trig. 3m : R3m |
| Beaverite-(Cu) | Pb(Fe3+2Cu)(SO4)2(OH)6 | Trig. 3m (3 2/m) : R3m |
| Beaverite-(Zn) | Pb(Fe3+2Zn)(SO4)2(OH)6 | Trig. 3m (3 2/m) : R3m |
| Dorallcharite | TlFe3+3(SO4)2(OH)6 | Trig. 3m (3 2/m) : R3m |
| Huangite | Ca0.5Al3(SO4)2(OH)6 | Trig. 3m (3 2/m) : R3m |
| Hydroniumjarosite | (H3O)Fe3+3(SO4)2(OH)6 | Trig. 3m (3 2/m) : R3m |
| Jarosite | KFe3+3(SO4)2(OH)6 | Trig. 3m (3 2/m) : R3m |
| Natroalunite | NaAl3(SO4)2(OH)6 | Trig. 3m : R3m |
| Natroalunite-2c | (Na,Ca0.5,K)Al3(SO4)2(OH)6 | Trig. 3m (3 2/m) : R3m |
| Natrojarosite | NaFe3(SO4)2(OH)6 | Trig. 3m : R3m |
| Osarizawaite | Pb(Al2Cu2+)(SO4)2(OH)6 | Trig. 3m (3 2/m) : R3m |
| Plumbojarosite | Pb0.5Fe3+3(SO4)2(OH)6 | Trig. 3m (3 2/m) : R3m |
| Schlossmacherite | (H3O)Al3(SO4)2(OH)6 | Trig. 3m (3 2/m) : R3m |
| Walthierite | Ba0.5Al3(SO4)2(OH)6 | Trig. |
Common Associates
Associated Minerals Based on Photo Data:
| 2 photos of Ammoniojarosite associated with Ammonioalunite | (NH4)Al3(SO4)2(OH)6 |
| 1 photo of Ammoniojarosite associated with Kremersite | (NH4,K)2[Fe3+Cl5(H2O)] |
| 1 photo of Ammoniojarosite associated with Tschermigite | (NH4)Al(SO4)2 · 12H2O |
| 1 photo of Ammoniojarosite associated with Ammoniomagnesiovoltaite | (NH4)2Mg2+5Fe3+3Al(SO4)12 · 18H2O |
| 1 photo of Ammoniojarosite associated with Atacamite | Cu2(OH)3Cl |
| 1 photo of Ammoniojarosite associated with Amurselite | (NH4)2(UO2)5(SeO3)3O2(OH)2(H2O) · 8H2O |
| 1 photo of Ammoniojarosite associated with Gypsum | CaSO4 · 2H2O |
Related Minerals - Strunz-mindat Grouping
| 7.BC. | Viskontite | Pb5Cu2(SO4)3(SeO3)(OH)6 |
| 7.BC. | Zincochenite | Pb4Zn(OH)6(SO4)2 |
| 7.BC. | D'Ansite-(Mn) | Na21Mn2+(SO4)10Cl3 |
| 7.BC. | D'Ansite-(Fe) | Na21Fe2+(SO4)10Cl3 |
| 7.BC. | Acmonidesite | (NH4,K,Pb)8NaFe2+4(SO4)5Cl8 |
| 7.BC. | Adranosite | (NH4)4NaAl2(SO4)4Cl(OH)2 |
| 7.BC. | Chromviskontite | Pb5Cu2(CrO4)3(SeO3)(OH)6 |
| 7.BC. | Backite | Pb2AlTeO6Cl |
| 7.BC. | Adranosite-(Fe) | (NH4)4NaFe3+2(SO4)4Cl(OH)2 |
| 7.BC. | Agaite | Pb3CuTeO5(OH)2(CO3) |
| 7.BC. | Wildcatite | CaFe3+Te6+O5(OH) |
| 7.BC. | Hagstromite | Pb8Cu2+(Te6+O6)2(CO3)Cl4 |
| 7.BC.05 | D'Ansite | Na21Mg(SO4)10Cl3 |
| 7.BC.07 | Apatelite | Fe3(SO4)2(OH)5 · 0.5H2O |
| 7.BC.07 | Unnamed (Ba-Fe Vanadate) | Ba, Fe, V, O, H |
| 7.BC.10 | Jarosite | KFe3+3(SO4)2(OH)6 |
| 7.BC.10 | Dorallcharite | TlFe3+3(SO4)2(OH)6 |
| 7.BC.10 | Argentojarosite | AgFe3+3(SO4)2(OH)6 |
| 7.BC.10 | Natroalunite | NaAl3(SO4)2(OH)6 |
| 7.BC.10 | Natrojarosite | NaFe3(SO4)2(OH)6 |
| 7.BC.10 | Beaverite-(Cu) | Pb(Fe3+2Cu)(SO4)2(OH)6 |
| 7.BC.10 | Beaverite-(Zn) | Pb(Fe3+2Zn)(SO4)2(OH)6 |
| 7.BC.10 | Walthierite | Ba0.5Al3(SO4)2(OH)6 |
| 7.BC.10 | Huangite | Ca0.5Al3(SO4)2(OH)6 |
| 7.BC.10 | Natroalunite-2c | (Na,Ca0.5,K)Al3(SO4)2(OH)6 |
| 7.BC.10 | Alunite | KAl3(SO4)2(OH)6 |
| 7.BC.10 | Plumbojarosite | Pb0.5Fe3+3(SO4)2(OH)6 |
| 7.BC.10 | Karlseifertite | Pb(Ga2Ge)(AsO4)2(OH)6 |
| 7.BC.10 | Hydroniumjarosite | (H3O)Fe3+3(SO4)2(OH)6 |
| 7.BC.10 | Ammonioalunite | (NH4)Al3(SO4)2(OH)6 |
| 7.BC.10 | Osarizawaite | Pb(Al2Cu2+)(SO4)2(OH)6 |
| 7.BC.10 | Schlossmacherite | (H3O)Al3(SO4)2(OH)6 |
| 7.BC.15 | Ye'elimite | Ca4Al6(SO4)O12 |
| 7.BC.20 | Nabokoite | KCu7(SO4)5(Te4+O3)OCl |
| 7.BC.20 | Puninite | Na2Cu3O(SO4)3 |
| 7.BC.20 | Atlasovite | K(BiO)Cu6Fe3+(SO4)5O3Cl |
| 7.BC.25 | Chlorothionite | K2Cu(SO4)Cl2 |
| 7.BC.30 | Euchlorine | KNaCu3(SO4)3O |
| 7.BC.30 | Fedotovite | K2Cu3(SO4)3O |
| 7.BC.35 | Kamchatkite | KCu3(SO4)2OCl |
| 7.BC.40 | Piypite | K4Cu4O2(SO4)4 · (Na,Cu)Cl |
| 7.BC.45 | Alumoklyuchevskite | K3Cu3(Al,Fe3+)(SO4)4O2 |
| 7.BC.45 | Belousovite | KZn(SO4)Cl |
| 7.BC.45 | Klyuchevskite | K3Cu3(Fe3+,Al)(SO4)4O2 |
| 7.BC.47 | MĂŒllerite | Pb2Fe3+(Te6+O6)Cl |
| 7.BC.50 | Caledonite | Pb5Cu2(SO4)3(CO3)(OH)6 |
| 7.BC.50 | Elasmochloite | Na3Cu6BiO4(SO4)5 |
| 7.BC.52 | Eleomelanite | (K2Pb)Cu4O2(SO4)4 |
| 7.BC.55 | Falgarite | K4(VO)3(SO4)5 |
| 7.BC.55 | Wherryite | Pb7Cu2(SO4)4(SiO4)2(OH)2 |
| 7.BC.57 | Krasheninnikovite | KNa2CaMg(SO4)3F |
| 7.BC.60 | Wulffite | K3NaCu4O2(SO4)4 |
| 7.BC.60 | Parawulffite | K5Na3Cu8O4(SO4)8 |
| 7.BC.60 | Mammothite | Pb6Cu4AlSb5+O2(OH)16Cl4(SO4)2 |
| 7.BC.62 | Shuvalovite | K2(Ca2Na)(SO4)3F |
| 7.BC.65 | Saccoite | Ca2Mn3+2F(OH)8 · 0.5(SO4) |
| 7.BC.65 | Linarite | PbCu(SO4)(OH)2 |
| 7.BC.65 | Therasiaite | (NH4)3KNa2Fe2+Fe3+(SO4)3Cl5 |
| 7.BC.65 | Franksousaite | PbCu(Se6+O4)(OH)2 |
| 7.BC.65 | Munakataite | Pb2Cu2(Se4+O3)(SO4)(OH)4 |
| 7.BC.65 | Schmiederite | Pb2Cu2(Se6+O4)(Se4+O3)(OH)4 |
| 7.BC.70 | Chenite | Pb4Cu(SO4)2(OH)6 |
| 7.BC.75 | Krivovichevite | Pb3Al(OH)6(SO4)(OH) |
| 7.BC.80 | Anhydrokainite | KMg(SO4)Cl |
Other Information
Notes:
Soluble in hot HCl.
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
Internet Links for Ammoniojarosite
mindat.org URL:
https://www.mindat.org/min-205.html
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References for Ammoniojarosite
Reference List:
Shannon, Earl V. (1927) Ammoniojarosite, a new mineral of the jarosite group from Utah. American Mineralogist, 12 (12) 424-426
Hendricks, Sterling B. (1937) The crystal structure of alunite and the jarosites. American Mineralogist, 22 (6) 773-784
Smith, W. L., Lampert, J. E. (1973) Crystal data for ammoniojarosite. NH4Fe3(OH)6(SO4)2. Journal of Applied Crystallography, 6 (6) 490-491 doi:10.1107/s0021889873009301
Jambor, John L. (1999) Nomenclature of the alunite supergroup. The Canadian Mineralogist, 37 (6). 1323-1341
Basciano, L. C., Peterson, R. C. (2007) The crystal structure of ammoniojarosite, (NH4)Fe3(SO4)2(OH)6 and the crystal chemistry of the ammoniojarositeâhydronium jarosite solid-solution series. Mineralogical Magazine, 71 (4) 427-441 doi:10.1180/minmag.2007.071.4.427
Localities for Ammoniojarosite
symbol to view information about a locality.
The Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
â - Click for references and 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).
All localities listed without proper references should be considered as questionable.
Austria | |
| Chris Auer +2 other references |
| Postl (1982) +1 other reference |
Belgium | |
| Leduc et al. (2012) |
Bolivia | |
| Mineralogical Society of America - ... |
Czech Republic | |
| Palache et al. (1951) |
| KoĆĄek (2018) |
| HrĆĄelovĂĄ et al. (2013) |
France | |
| Mineralogical Society of America - ... +1 other reference |
Germany | |
| Walenta (1992) |
| Schnorrer et al. (2001) |
| Wittern (2001) |
| Collection Elmar Lackner +2 other references |
| Lapis 30 (7/8) |
| Witzke (2024) |
Greece | |
| Rieck et al. (2018) |
Hungary | |
| SzakĂĄll S.-HOM Collection |
Italy | |
| Joan Rosell-Riba (2023) |
New Zealand | |
| Johnstone (1979) |
Peru | |
| Ciesielczuk et al. (2013) |
Poland | |
| Parafiniuk et al. (2009) |
| Kruszewski et al. (2020) |
Russia | |
| Cesnokov et al. (1998) |
Slovakia | |
| Duda et. all. |
| ÄuÄa R. (2001) | |
Spain | |
| Nunes (n.d.) |
| Crespo et al. (2017) |
UK | |
| Inglethorpe et al. (1993) |
USA | |
| Erd et al. (1964) +2 other references |
| Pampeyan (2010) |
| Kampf et al. (2024) |
| Altaner et al. (1988) +1 other reference |
| Pemberton (1983) +1 other reference | |
| Smith et al. (1997) |
| Coskren et al. (2000) |
| Shannon (1927) +1 other reference |
| Kilburn et al. (1996) |
| Rye et al. (2003) | |
| Odum et al. (1982) |
| Palache et al. (1951) |
Venezuela | |
| Urbani |
| Franco Urbani (2009) |
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Muttlkogel, Zangtal, Köflach - Voitsberg lignite deposit, Köflach, Voitsberg District, Styria, Austria