Tamboite (original) (raw)

A valid IMA mineral species

Formula:

Fe3+3(OH)(H2O)2(SO4)(Te4+O3)3(Te4+O(OH)2)(H2O)3

Specific Gravity:

3.648 (Calculated)

Crystal System:

Monoclinic

Name:

Named for the Tambo Mine, Chile, where it was discovered.

Closely related to metatamboite, which is a monohydrate equivalent of tamboite; chemically somewhat similar to poughite. The hydroxytellurate group in tamboite and metatamboite seems to be unique among minerals. Visually indistinguishable from metatamboite. Transition of a crystal of metatamboite to tamboite (in summer; lab Temperature 21C; relative humidity ~50%) and from tamboite to metatamboite (in winter; lab temperature 21C; relative humidity ,20%); this change is completely reversible at room temperature in response to changes in relative humidity.

The structure is determined.

Unique IdentifiersHide

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Long-form identifier:

mindat:1:1:50355:8

cee90b2b-dcee-4950-9d9b-9cf4f9ca9744

IMA Classification of TamboiteHide

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IMA Formula:

Fe3+3(OH)(H2O)2(SO4)(Te4+O3)3[Te4+O(OH)2](H2O)3

Type description reference:

Cooper, M. A., Hawthorne, F. C., Abdu, Y. A., Walford, P. C., & Back, M. E. (2019). Relative humidity as a driver of structural change in three new ferric-sulfate-tellurite hydrates: New minerals tamboite and metatamboite, and a lower-hydrate derivative, possibly involving direct uptake of atmospheric {H2O} 4 clusters. The Canadian Mineralogist, 57(5), 605-635.

Classification of TamboiteHide

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4.JN.40

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
J : Arsenites, antimonites, bismuthites, sulfites, selenites, tellurites; iodates
N : Tellurites with additional anions, with H2O

Mineral SymbolsHide

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As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

Symbol Source Reference
Tmb 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 TamboiteHide

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Streak:

Very pale yellow to colorless

Density:

3.648 g/cm3 (Calculated)

Optical Data of TamboiteHide

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Comments:

colorless to very pale yellow,

Comments:

Average indices of refraction calculated using the Gladstone-Dale relation is 1.874

Chemistry of TamboiteHide

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Mindat Formula:

Fe3+3(OH)(H2O)2(SO4)(Te4+O3)3(Te4+O(OH)2)(H2O)3

Crystallography of TamboiteHide

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Crystal System:

Monoclinic

Class (H-M):

2/m - Prismatic

Cell Parameters:

a = 16.979(1) Å, b = 7.310(4) Å, c = 16.666(9) Å
β = 108.86(1)°

Ratio:

a:b:c = 2.323 : 1 : 2.28

Unit Cell V:

1,957.47 ų (Calculated from Unit Cell)

X-Ray Powder DiffractionHide

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Powder Diffraction Data:

d-spacing Intensity
16.07 Å (100)
8.205 Å (4)
4.267 Å (3)
4.153 Å (4)
3.943 Å (4)
3.425 Å (9)
3.171 Å (6)
2.999 Å (8)

Geological EnvironmentHide

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Type Occurrence of TamboiteHide

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General Appearance of Type Material:

radiating fiber bundles on the surface of a compact
aggregate of silicified tuff.

Place of Conservation of Type Material:

Mineralogical collections of the Department of Natural History, Royal Ontario Museum, 100 Queens Park, Toronto, Ontario M5S 2C6, Canada (catalogue number M57171)

Geological Setting of Type Material:

Oxidation zone of epithermal veins.

Associated Minerals at Type Locality:

Reference:

Cooper, M. A., Hawthorne, F. C., Abdu, Y. A., Walford, P. C., & Back, M. E. (2019). Relative humidity as a driver of structural change in three new ferric-sulfate-tellurite hydrates: New minerals tamboite and metatamboite, and a lower-hydrate derivative, possibly involving direct uptake of atmospheric {H2O} 4 clusters. The Canadian Mineralogist, 57(5), 605-635.

Synonyms of TamboiteHide

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Related Minerals - Strunz-mindat GroupingHide

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4.JN. Tombstoneite (Ca0.5Pb0.5)Pb3Cu2+6Te6+2O6(Te4+O3)6(Se4+O3)2(SO4)2 · 3H2O Trig. 32 : _P_321
4.JN. Ozernovskite Fe3+4(Te4+O4)(Te4+O3)4 · 7H2O Mon. 2/m : _B_2/b
4.JN.05 Sonoraite Fe3+(TeO3)(OH) · H2O Mon. 2/m : _P_21/b
4.JN.10 Poughite Fe3+2(TeO3)2(SO4)(H2O)2 · H2O Orth. m _m_2
4.JN.15 Cesbronite Cu2+3Te6+O4(OH)4 Orth. m m m _(_2/_m_2/_m_2/m ) : C m c m
4.JN.20 Eztlite Pb2+2Fe3+3(Te4+ O3)3(SO4)O2Cl Mon. m : B m
4.JN.30 Juabite CaCu10(TeO3)4(AsO4)4(OH)2 · 4H2O Tric. 1 : _P_1
4.JN.35 Eurekadumpite (Cu,Zn)16(TeO3)2(AsO4)3Cl(OH)18 · 7H2O Mon. 2/m : _P_2/m
4.JN.40 Metatamboite Fe3+3(OH)(H2O)2(SO4)(Te4+O3)3(Te4+O(OH)2)(H2O) Mon. 2/m : _P_21/b

Other InformationHide

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Health Risks:

No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

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References for TamboiteHide

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Reference List:

Cooper, M. A., Hawthorne, F. C., Abdu, Y. A., Walford, P. C., & Back, M. E. (2019). Relative humidity as a driver of structural change in three new ferric-sulfate-tellurite hydrates: New minerals tamboite and metatamboite, and a lower-hydrate derivative, possibly involving direct uptake of atmospheric {H2O} 4 clusters. The Canadian Mineralogist, 57(5), 605-635.

Localities for TamboiteHide

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This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

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- 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.

Chile (TL)
Coquimbo Elqui Province Vicuña Tambo Mine ⓘ Wendy pit (TL) Hålenius et al. (2016) +1 other reference