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
GUID
(UUID V4):
(UUID V4):
9542288c-a281-429e-b573-6c0e4a35c03b
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 IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
Symbol | Source | Reference |
---|---|---|
Ajrs | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC 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
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
and does not take into account mineral colouration.
Surface Relief:
Very High
Chemistry of Ammoniojarosite
Mindat Formula:
(NH4)Fe3+3(SO4)2(OH)6
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 ų (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 Å | (100) |
3.097 Å | (100) |
5.123 Å | (58) |
1.988 Å | (30) |
1.832 Å | (30) |
2.318 Å | (21) |
5.811 Å | (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
Relationship of Ammoniojarosite to other Species
Member of:
Other Members of this 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 Atacamite | Cu2(OH)3Cl |
1 photo of Ammoniojarosite associated with Ammoniomagnesiovoltaite | (NH4)2Mg2+5Fe3+3Al(SO4)12 · 18H2O |
1 photo of Ammoniojarosite associated with Gypsum | CaSO4 · 2H2O |
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 |
Related Minerals - Strunz-mindat Grouping
7.BC. | Adranosite-(Fe) | (NH4)4NaFe3+2(SO4)4Cl(OH)2 |
7.BC. | Adranosite | (NH4)4NaAl2(SO4)4Cl(OH)2 |
7.BC. | D'Ansite-(Mn) | Na21Mn2+(SO4)10Cl3 |
7.BC. | Agaite | Pb3CuTeO5(OH)2(CO3) |
7.BC. | D'Ansite-(Fe) | Na21Fe2+(SO4)10Cl3 |
7.BC. | Acmonidesite | (NH4,K,Pb)8NaFe2+4(SO4)5Cl8 |
7.BC. | Backite | Pb2AlTeO6Cl |
7.BC. | Hagstromite | Pb8Cu2+(Te6+O6)2(CO3)Cl4 |
7.BC. | Wildcatite | CaFe3+Te6+O5(OH) |
7.BC. | Franksousaite | PbCu(Se6+O4)(OH)2 |
7.BC. | Zincochenite | Pb4Zn(OH)6(SO4)2 |
7.BC. | Viskontite | Pb5Cu2(SO4)3(SeO3)(OH)6 |
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 | Alunite | KAl3(SO4)2(OH)6 |
7.BC.10 | Ammonioalunite | (NH4)Al3(SO4)2(OH)6 |
7.BC.10 | Argentojarosite | AgFe3+3(SO4)2(OH)6 |
7.BC.10 | Beaverite-(Cu) | Pb(Fe3+2Cu)(SO4)2(OH)6 |
7.BC.10 | Dorallcharite | TlFe3+3(SO4)2(OH)6 |
7.BC.10 | Huangite | Ca0.5Al3(SO4)2(OH)6 |
7.BC.10 | Hydroniumjarosite | (H3O)Fe3+3(SO4)2(OH)6 |
7.BC.10 | Jarosite | KFe3+3(SO4)2(OH)6 |
7.BC.10 | Natroalunite-2c | (Na,Ca0.5,K)Al3(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 | Osarizawaite | Pb(Al2Cu2+)(SO4)2(OH)6 |
7.BC.10 | Plumbojarosite | Pb0.5Fe3+3(SO4)2(OH)6 |
7.BC.10 | Schlossmacherite | (H3O)Al3(SO4)2(OH)6 |
7.BC.10 | Walthierite | Ba0.5Al3(SO4)2(OH)6 |
7.BC.10 | Beaverite-(Zn) | Pb(Fe3+2Zn)(SO4)2(OH)6 |
7.BC.15 | Ye'elimite | Ca4Al6(SO4)O12 |
7.BC.20 | Atlasovite | K(BiO)Cu6Fe3+(SO4)5O3Cl |
7.BC.20 | Nabokoite | KCu7(SO4)5(Te4+O3)OCl |
7.BC.20 | Puninite | Na2Cu3O(SO4)3 |
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 | Klyuchevskite | K3Cu3(Fe3+,Al)(SO4)4O2 |
7.BC.45 | Alumoklyuchevskite | K3Cu3(Al,Fe3+)(SO4)4O2 |
7.BC.45 | Belousovite | KZn(SO4)Cl |
7.BC.47 | Müllerite | 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 | Wherryite | Pb7Cu2(SO4)4(SiO4)2(OH)2 |
7.BC.55 | Falgarite | K4(VO)3(SO4)5 |
7.BC.57 | Krasheninnikovite | KNa2CaMg(SO4)3F |
7.BC.60 | Mammothite | Pb6Cu4AlSb5+O2(OH)16Cl4(SO4)2 |
7.BC.60 | Wulffite | K3NaCu4O2(SO4)4 |
7.BC.60 | Parawulffite | K5Na3Cu8O4(SO4)8 |
7.BC.62 | Shuvalovite | K2(Ca2Na)(SO4)3F |
7.BC.65 | Linarite | PbCu(SO4)(OH)2 |
7.BC.65 | Schmiederite | Pb2Cu2(Se6+O4)(Se4+O3)(OH)4 |
7.BC.65 | Munakataite | Pb2Cu2(Se4+O3)(SO4)(OH)4 |
7.BC.65 | Therasiaite | (NH4)3KNa2Fe2+Fe3+(SO4)3Cl5 |
7.BC.65 | Saccoite | Ca2Mn3+2F(OH)8 · 0.5(SO4) |
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:
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
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 (4) 427-441 doi:10.1180/minmag.2007.071.4.427
Localities for Ammoniojarosite
Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
ⓘ - 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).
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 (e.g. from pseudomorphs).
All localities listed without proper references should be considered as questionable.
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) |
| Hršelová 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) |
Greece | |
| Rieck et al. (2018) |
Hungary | |
| Szakáll 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. (2019) |
Russia | |
| Cesnokov et al. (1998) |
Slovakia | |
| Duda et. all. |
Ďuďa R. (2001) | |
Spain | |
| Rui Nunes collection |
| Crespo et al. (2017) |
UK | |
| Inglethorpe et al. (1993) |
USA | |
| Van Nostrand Reinholt Press: 279. +2 other references |
| Pampeyan (2010) |
| Altaner et al. (1988) +1 other reference |
Van Nostrand Reinholt Press: 279. +1 other reference | |
| Rocks & Minerals: 72 (4) |
| Coskren et al. (2000) |
| American Mineralogist (1927) +1 other reference |
| Kilburn et al. (1996) |
Rye et al. (2003) | |
| Canadian Mineralogist Vol. 20 (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