Tomiolloite
A valid IMA mineral species
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About Tomiolloite
Formula:
Al12(Te4+O3)5[(SO3)0.5(SO4)0.5](OH)24
Colour:
White
Lustre:
Pearly
Hardness:
3
Specific Gravity:
3.374 (Calculated)
Crystal System:
Hexagonal
Name:
From the Nahuatl (native people from the type locality) word for "fuzzy" (tomiollo)
New structure type. Unique combination of elements (at the upload time). The first tellurate-sulfate(IV) mineral to date.
Unique Identifiers
Mindat ID:
55535
Long-form identifier:
mindat:1:1:55535:7
IMA Classification of Tomiolloite
Classification of Tomiolloite
4.JL.
4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
J : Arsenites, antimonites, bismuthites, sulfites, selenites, tellurites; iodates
L : Tellurites with additional anions, without H2O
4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
J : Arsenites, antimonites, bismuthites, sulfites, selenites, tellurites; iodates
L : Tellurites with additional anions, without H2O
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 |
|---|---|---|
| Toi | 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 Tomiolloite
Pearly
Colour:
White
Streak:
White
Hardness:
3 on Mohs scale
Tenacity:
Brittle
Cleavage:
None Observed
Fracture:
Irregular/Uneven
Density:
3.374 g/cm3 (Calculated)
Optical Data of Tomiolloite
Type:
Uniaxial (-)
RI values:
nω = 1.79(1) nε = 1.71(1)
Max. Birefringence:
δ = 0.080
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.
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.
Surface Relief:
Moderate
Pleochroism:
Weak
Comments:
O: greyish blue
E: brownish yellow
E: brownish yellow
Comments:
Calculated from Gladstone-Dale.
Chemistry of Tomiolloite
Mindat Formula:
Al12(Te4+O3)5[(SO3)0.5(SO4)0.5](OH)24
Element Weights:
Crystallography of Tomiolloite
Crystal System:
Hexagonal
Class (H-M):
6/m - Dipyramidal
Space Group:
P63/m
Cell Parameters:
a = 13.336(2) Å, c = 11.604(2) Å
Ratio:
a:c = 1 : 0.87
Unit Cell V:
1,787.27 ų (Calculated from Unit Cell)
Z:
2
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 11.667 Å | (89) |
| 8.240 Å | (38) |
| 4.395 Å | (29) |
| 4.107 Å | (29) |
| 3.503 Å | (31) |
| 3.223 Å | (100) |
| 2.905 Å | (37) |
| 2.593 Å | (21) |
Type Occurrence of Tomiolloite
General Appearance of Type Material:
Spherical aggregates of very thin needles resulting in a "puffball" appearance.
Place of Conservation of Type Material:
mineralogical collections of the Museums Victoria, GPO Box 666, Melbourne 3001, Victoria, Australia, specimen number M55489.
Geological Setting of Type Material:
Oxidation zone of a deposit containing tellurium.
Associated Minerals at Type Locality:
Other Language Names for Tomiolloite
Dutch:Tomiolloiet
German:Tomiolloit
Common Associates
Related Minerals - Strunz-mindat Grouping
| 4.JL. | Chorążewiczite | Pb2Fe3+(Te6+O6)(HCO3) |
| 4.JL.05 | Rodalquilarite | Fe2(TeO2OH)3(TeO3)Cl |
| 4.JL.10 | Mackayite | Fe3+(Te4+2O5)(OH) |
| 4.JL.15 | Mroseite | CaTe4+(CO3)O2 |
| 4.JL.20 | Pingguite | Bi6Te2O15 |
| 4.JL.25 | Tlapallite | (Ca,Pb)3CaCu6[Te4+3Te6+O12]2(Te4+O3)2(SO4)2 · 3H2O |
| 4.JL.30 | 'Girdite' | H2Pb3(Te4+O3)(Te6+O6) |
| 4.JL.40 | Bodieite | Bi2(TeO3)2(SO4) |
Fluorescence of Tomiolloite
None observed
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.
Internet Links for Tomiolloite
mindat.org URL:
https://www.mindat.org/min-55535.html
Please feel free to link to this page.
Please feel free to link to this page.
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External Links:
Mineral Dealers:
References for Tomiolloite
Reference List:
Miyawaki, Ritsuro, Hatert, Frédéric, Pasero, Marco, Mills, Stuart J. (2021) Newsletter 62. Mineralogical Magazine, 85 (4) 634-638 doi:10.1180/mgm.2021.62
Missen, Owen P., Mills, Stuart J., Rumsey, Michael S., Spratt, John, Najorka, Jens, Kampf, Anthony R., Thorne, Brent (2022) The new mineral tomiolloite, Al12(Te4+O3)5[(SO3)0.5(SO4)0.5](OH)24: A unique microporous tellurite structure. American Mineralogist, 107 (12) 2167-2175 doi:10.2138/am-2022-8368
Localities for Tomiolloite
Showing 1 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.
Mexico (TL) | |
| Miyawaki et al. (2021) +1 other reference |
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Moctezuma Mine, Moctezuma, Moctezuma Municipality, Sonora, Mexico