Huizingite-(Al)
A valid IMA mineral species
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About Huizingite-(Al)
Terry and Marie Huizing
Formula:
[(NH4)9(SO4)2][(Al,Fe3+)3(OH)2(H2O)4(SO4)6]
Colour:
light greenish-yellow
Lustre:
Vitreous
Hardness:
2½
Specific Gravity:
2.026 (Calculated)
Crystal System:
Triclinic
Name:
Huizingite is named for Terry E. Huizing (born 1938), Adjunct Curator of Mineralogy for the Cincinnati Museum Center, and Marie E. Huizing (born 1939), Editor of Rocks & Minerals since 1978.
Type Locality:
New structure type. The first NH4-Al sulphate that is both basic and hydrated. Somewhat chemically comparable to ammonioalunite and tschermigite. Some analyses have Fe > Al, thus corresponding to 'unnamed (Fe analogue of huizingite-(Al))'.
The bipartite (as in case of carlsonite of the same locality) structure consist of:
- [(Al,Fe3+)3(OH)2(H2O)4(SO4)6]5- cluster, comprising the structural unit, and being unique (the comparable unit in carlsonite has the same charge), although of the samer topology as a fragment of a chain in sideronatrite
- [(NH4)9(SO4)2]5+ complex, comprising the interstitial unit.
In the structural unit three (Al,)FeO6 octahedra form a corner-linked chain.
The bipartite (as in case of carlsonite of the same locality) structure consist of:
- [(Al,Fe3+)3(OH)2(H2O)4(SO4)6]5- cluster, comprising the structural unit, and being unique (the comparable unit in carlsonite has the same charge), although of the samer topology as a fragment of a chain in sideronatrite
- [(NH4)9(SO4)2]5+ complex, comprising the interstitial unit.
In the structural unit three (Al,)FeO6 octahedra form a corner-linked chain.
Unique Identifiers
Mindat ID:
46635
Long-form identifier:
mindat:1:1:46635:4
IMA Classification of Huizingite-(Al)
Classification of Huizingite-(Al)
7.DF.52
7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
D : Sulfates (selenates, etc.) with additional anions, with H2O
F : With large and medium-sized cations
7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
D : Sulfates (selenates, etc.) with additional anions, with H2O
F : With large and medium-sized cations
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 for Standard |
|---|---|---|
| Hui-Al | 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 Huizingite-(Al)
Vitreous
Colour:
Light greenish-yellow
Streak:
White
Hardness:
2½ on Mohs scale
Tenacity:
Brittle
Cleavage:
None Observed
Fracture:
Irregular/Uneven
Density:
2.026 g/cm3 (Calculated)
Optical Data of Huizingite-(Al)
Type:
Biaxial (+)
RI values:
nα = 1.543(1) nβ = 1.545(1) nγ = 1.563(1)
2V:
Measured: 40° (3), Calculated: 37°
Max. Birefringence:
δ = 0.020
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 µm 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. Each grain retains its interference colour (retardation) while its brightness falls to black at extinction and reaches a maximum between extinction positions.
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 µm 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. Each grain retains its interference colour (retardation) while its brightness falls to black at extinction and reaches a maximum between extinction positions.
Surface Relief:
Low (positive)
Relative to Canada balsam mounting medium (n ≈ 1.537).
Relative to Canada balsam mounting medium (n ≈ 1.537).
This shows the grain boundary and Becke line effect under plane-polarised
light, based on the contrast between this mineral's average refractive
index and the mounting medium. It does not take into account mineral
colouration.
In focus
Interference Figure:
This shows the idealized biaxial acute bisectrix (Bxa) interference figure
- the conoscopic view for a grain cut perpendicular to the acute bisectrix, using
this mineral's 2V. The two small white dots mark the melatopes - the points
where the two optic axes emerge - and are shown only when they fall within the
field of view. The coloured bands are isochromatics, and the dark bands are
isogyres.
Rotate the stage: at 0°/90° the isogyres form a cross through the melatopes; at 45° they pull apart into curved hyperbolas. That splitting on rotation - absent in a uniaxial figure - is the standard diagnostic test for telling biaxial minerals from uniaxial ones. If 2V is large, the melatopes may fall outside the field of view, as they often do at the microscope too.
Rotate the stage: at 0°/90° the isogyres form a cross through the melatopes; at 45° they pull apart into curved hyperbolas. That splitting on rotation - absent in a uniaxial figure - is the standard diagnostic test for telling biaxial minerals from uniaxial ones. If 2V is large, the melatopes may fall outside the field of view, as they often do at the microscope too.
Dispersion:
strong (r > v)
Comments:
pale yellow (X), almost colourless (Y & Z); X > Y ~ Z
Chemistry of Huizingite-(Al)
Mindat Formula:
[(NH4)9(SO4)2][(Al,Fe3+)3(OH)2(H2O)4(SO4)6]
Element Weights:
Common Impurities:
Fe(III)
Crystallography of Huizingite-(Al)
Crystal System:
Triclinic
Class (H-M):
1 - Pinacoidal
Space Group:
P1
Cell Parameters:
a = 9.7093(3) Å, b = 10.4341(3) Å, c = 10.7027(8) Å
α = 77.231(5)°, β = 74.860(5)°, γ = 66.104(5)°
α = 77.231(5)°, β = 74.860(5)°, γ = 66.104(5)°
Ratio:
a:b:c = 0.931 : 1 : 1.026
Unit Cell V:
948.73 ų
Z:
1
Morphology:
Observed crystal forms: {100}, {010}, {110}
Twinning:
not observed
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 8.82 Å | (60) |
| 5.60 Å | (32) |
| 5.037 Å | (69) |
| 4.122 Å | (41) |
| 3.534 Å | (38) |
| 3.427 Å | (100) |
| 3.204 Å | (68) |
| 3.043 Å | (94) |
Comments:
From Type Description.
Type Occurrence of Huizingite-(Al)
General Appearance of Type Material:
tabular to bladed crystals, flattening on {100} , up to ca. 0.25 mm (in max. dimension), in drusy aggregates
Place of Conservation of Type Material:
Type material is deposited in the collections of Natural History Museum of Los Angeles County, 900 Exposition Boulevard, Los Angeles, CA 90007, USA, catalogue number 65576
Geological Setting of Type Material:
as for carlsonite: natural fire of an oil-bearing shale
Synonyms of Huizingite-(Al)
Other Language Names for Huizingite-(Al)
Dutch:Huizingiet-(Al)
German:Huizingit-(Al)
Common Associates
Associations Based on Photo Data:
| 1 photo of Huizingite-(Al) associated with Adranosite | (NH4)4NaAl2(SO4)4Cl(OH)2 |
Related Minerals - Strunz-mindat Grouping
| 7.DF. | Siligiite | [Pb(H2O)5(SO4)][Zn9(OH)18] |
| 7.DF. | Alcaparrosaite | K3Ti4+Fe3+(SO4)4O(H2O)2 |
| 7.DF. | Flaggite | Pb4Cu2+4Te6+2(SO4)2O11(OH)2(H2O) |
| 7.DF. | Bairdite | Pb2Cu2+4Te6+2O10(OH)2(SO4) · H2O |
| 7.DF. | Tzeferisite | CaZn8(SO4)2(OH)12Cl2(H2O)9 |
| 7.DF. | Cherokeeite | [Pb2Zn(OH)4](SO4) · H2O |
| 7.DF. | Ammoniomathesiusite | (NH4)5(UO2)4(SO4)4(VO5) · 4H2O |
| 7.DF. | Sigogglinite | [Pb6Zn(OH)8]2(SO4)6 · (H2O)8-x |
| 7.DF.X | Blueridgeite | [Pb8Zn3Cu2+(OH)16](SO4)2(S2O3)2 · 2H2O |
| 7.DF. | Erssonite | Mg7Fe3+2(OH)18[Ca(H2O)6](SO4)2 · 12H2O |
| 7.DF. | Poellmannite | Ca6Al3(OH)18[Na(H2O)6](SO4)2 · 6H2O |
| 7.DF. | Carlsonite | (NH4)5Fe3+3O(SO4)6 · 7H2O |
| 7.DF. | Cuprocherokeeite | [Pb8Zn3Cu2+(OH)16](SO4)4 · 4H2O |
| 7.DF. | Haywoodite | [Pb(H2O)10][Zn12(OH)20(H2O)(SO4)3] |
| 7.DF. | Chromschieffelinite | Pb10Te6+6O20(OH)14(CrO4)(H2O)5 |
| 7.DF.05 | Uklonskovite | NaMg(SO4)F · 2H2O |
| 7.DF.10 | Kainite | KMg(SO4)Cl · 3H2O |
| 7.DF.10 | Kaliochalcite | KCu2(SO4)2[(OH)(H2O)] |
| 7.DF.15 | Natrochalcite | NaCu2(SO4)2(OH) · 2H2O |
| 7.DF.17 | Genplesite | Ca3Sn(SO4)2(OH)6 · 3H2O |
| 7.DF.17 | 'Unnamed (Ba-Sb Silicate-Sulphate-Hydroxide-Hydrate)' | Ba3Sb5+[(Si,S)O3(OH)]2(OH,O)6 · 3H2O |
| 7.DF.20 | Sideronatrite | Na2Fe(SO4)2(OH) · 3H2O |
| 7.DF.20 | Metasideronatrite | Na2Fe(SO4)2(OH) · H2O |
| 7.DF.25 | Fleischerite | Pb3Ge(SO4)2(OH)6 · 3H2O |
| 7.DF.25 | Mallestigite | Pb3Sb5+(SO4)(AsO4)(OH)6 · 3H2O |
| 7.DF.25 | Schaurteite | Ca3Ge(SO4)2(OH)6 · 4H2O |
| 7.DF.25 | Despujolsite | Ca3Mn4+(SO4)2(OH)6 · 3H2O |
| 7.DF.30 | Slavíkite | (H3O+)3Mg6Fe15(SO4)21(OH)18 · 98H2O |
| 7.DF.35 | Metavoltine | K2Na6Fe2+Fe3+6O2(SO4)12 · 18H2O |
| 7.DF.40 | Lannonite | Mg2Ca4Al4(SO4)8F8 · 24H2O |
| 7.DF.40 | Vlodavetsite | AlCa2(SO4)2F2Cl · 4H2O |
| 7.DF.45 | Peretaite | Ca(SbO)4(SO4)2(OH)2 · 2H2O |
| 7.DF.50 | Gordaite | NaZn4(SO4)(OH)6Cl · 6H2O |
| 7.DF.50 | Calamaite | Na2TiO(SO4)2 · 2H2O |
| 7.DF.52 | Scordariite | K8(Fe3+0.67◻0.33)[Fe3+3O(SO4)6]2 · 14H2O |
| 7.DF.55 | Clairite | (NH4)2Fe3(SO4)4(OH)3 · 3H2O |
| 7.DF.55 | Giacovazzoite | K5Fe3+3O(SO4)6 · 10H2O |
| 7.DF.57 | Magnanelliite | K3Fe3+2(SO4)4(OH)(H2O)2 |
| 7.DF.60 | Arzrunite | Cu4Pb2(SO4)(OH)4Cl6 · 2H2O (?) |
| 7.DF.60 | Evdokimovite | Tl4(VO)3(SO4)5(H2O)5 |
| 7.DF.62 | Bridgesite-(Ce) | CaCe2Cu6(SO4)4(OH)12 · 8H2O |
| 7.DF.65 | Elyite | Pb4Cu(SO4)O2(OH)4 · H2O |
| 7.DF.70 | Yecoraite | Fe3+3Bi5(Te6+O4)2(Te4+O3)O9 · 9H2O |
| 7.DF.70 | Lautenthalite | PbCu4(SO4)2(OH)6 · 3H2O |
| 7.DF.75 | Riomarinaite | Bi(SO4)(OH) · H2O |
| 7.DF.80 | Dukeite | Bi3+24Cr6+8O57(OH)6 · 3H2O |
Other Information
Notes:
easily soluble in water; Lewis basicity: (1) structural unit: 0.20-0.12 valence units (vu); (2) interstitial complex: 0.14 vu;
Raman bands [cm-1]: 980, 1003, 1010, 1027 (sulfate symmetric stretching); 1064, 1123, 1151, 1205 (ν3 sulfate modes); 618-673 region (ν4 sulfate modes); 448-478 region (ν2 sulfate modes); 223, 263 (Fe-O modes?)
Raman bands [cm-1]: 980, 1003, 1010, 1027 (sulfate symmetric stretching); 1064, 1123, 1151, 1205 (ν3 sulfate modes); 618-673 region (ν4 sulfate modes); 448-478 region (ν2 sulfate modes); 223, 263 (Fe-O modes?)
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 Huizingite-(Al)
mindat.org URL:
https://www.mindat.org/min-46635.html
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References for Huizingite-(Al)
Reference List:
Hålenius, U., Hatert, F., Pasero, M., Mills, S. J. (2015) New minerals and nomenclature modifications approved in 2015, CNMNC Newsletter No 25. Mineralogical Magazine, 79 (3) 529-535 doi:10.1180/minmag.2015.079.3.02
Kampf, Anthony R., Richards, R. Peter, Nash, Barbara P., Murowchick, James B., Rakovan, John F. (2016) Carlsonite, (NH4)5Fe3+3O(SO4)6·7H2O, and huizingite-(Al), (NH4)9Al3(SO4)8(OH)2·4H2O, two new minerals from a natural fire in an oil-bearing shale near Milan, Ohio. American Mineralogist, 101 (9) 2095-2107 doi:10.2138/am-2016-5680
Localities for Huizingite-(Al)
Showing 4 localities.
symbol to view information about a locality.
The 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).
All localities listed without proper references should be considered as questionable.
Czech Republic | |
| Matýsek et al. (2022) |
Italy | |
| Russo et al. (2017) |
USA | |
| Kampf et al. (2024) |
| Mineralogical Magazine +2 other references |
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Huron Shale burn site, Huron River, Huron County, Ohio, USA