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
GUID
(UUID V4):
(UUID V4):
a6f1070d-291a-472c-83ad-a140ce6ce762
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 |
---|---|---|
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 = 1.790(1) nε = 1.710(1)
Max Birefringence:
δ = 0.080
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:
High
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
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:
Common Associates
Related Minerals - Strunz-mindat Grouping
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
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.
Mexico (TL) | |
| Miyawaki et al. (2021) +1 other reference |
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Moctezuma Mine, Moctezuma, Moctezuma Municipality, Sonora, Mexico