Metatamboite
A valid IMA mineral species
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Formula:
Fe3+3(OH)(H2O)2(SO4)(Te4+O3)3(Te4+O(OH)2)(H2O)
Colour:
pale yellow
Lustre:
Vitreous, Greasy
Specific Gravity:
4.053 (Calculated)
Crystal System:
Monoclinic
Name:
The prefix 'meta', indicates a lower hydration state of tamboite.
Closely related to tamboite, which is a trihydrate equivalent of metatamboite; chemically somewhat similar to poughite. The hydroxytellurate group in tamboite and metatamboite seems to be unique among minerals.
The structure is determined.
The structure is determined.
Unique Identifiers
Mindat ID:
50356
Long-form identifier:
mindat:1:1:50356:7
GUID
(UUID V4):
(UUID V4):
7b94c865-35c6-4ce6-8ce3-d36b37f2033a
IMA Classification of Metatamboite
Approved
IMA Formula:
Fe3+3(OH)(H2O)2(SO4)(Te4+O3)3[Te4+O(OH)2](H2O)
Approval year:
2016
First published:
2019
Classification of Metatamboite
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
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 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 |
---|---|---|
Mtm | 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 Metatamboite
Vitreous, Greasy
Transparency:
Translucent
Colour:
pale yellow
Streak:
very pale yellow to colorless
Tenacity:
Brittle
Fracture:
Splintery
Density:
4.053 g/cm3 (Calculated)
Optical Data of Metatamboite
Type:
Biaxial
Pleochroism:
Weak
Comments:
colorless to very pale yellow
Comments:
Average indices of refraction calculated using the Gladstone-Dale relation is 1.958
Chemistry of Metatamboite
Mindat Formula:
Fe3+3(OH)(H2O)2(SO4)(Te4+O3)3(Te4+O(OH)2)(H2O)
Crystallography of Metatamboite
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
P21/b
Setting:
P21/c
Cell Parameters:
a = 14.395(5) Å, b = 7.296(4) Å, c = 16.411(6) Å
β = 98.91(1)°
β = 98.91(1)°
Ratio:
a:b:c = 1.973 : 1 : 2.249
Unit Cell V:
1,702.78 ų (Calculated from Unit Cell)
Z:
4
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
14.22 Å | (100) |
4.054 Å | (9) |
4.017 Å | (8) |
3.423 Å | (11) |
3.400 Å | (11) |
3.140 Å | (12) |
3.012 Å | (11) |
2.874 Å | (13) |
Geological Environment
Paragenetic Mode(s):
Paragenetic Mode | Earliest Age (Ga) |
---|---|
Stage 7: Great Oxidation Event | <2.4 |
47a : [Near-surface hydration of prior minerals] | |
47b : [Sulfates and sulfites] | |
47e : [Vanadates, chromates, manganates] |
Type Occurrence of Metatamboite
General Appearance of Type Material:
Crystal clusters (up to 3 mm across) of radiating
fiber bundles (up to 1 mm long) occur on the surface of a compact aggregate of silicified tuff.
fiber bundles (up to 1 mm long) occur 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 Metatamboite
Related Minerals - Strunz-mindat Grouping
4.JN. | Tombstoneite | (Ca0.5Pb0.5)Pb3Cu2+6Te6+2O6(Te4+O3)6(Se4+O3)2(SO4)2 · 3H2O |
4.JN. | Ozernovskite | Fe3+4(Te4+O4)(Te4+O3)4 · 7H2O |
4.JN.05 | Sonoraite | Fe3+(TeO3)(OH) · H2O |
4.JN.10 | Poughite | Fe3+2(TeO3)2(SO4)(H2O)2 · H2O |
4.JN.15 | Cesbronite | Cu2+3Te6+O4(OH)4 |
4.JN.20 | Eztlite | Pb2+2Fe3+3(Te4+ O3)3(SO4)O2Cl |
4.JN.30 | Juabite | CaCu10(TeO3)4(AsO4)4(OH)2 · 4H2O |
4.JN.35 | Eurekadumpite | (Cu,Zn)16(TeO3)2(AsO4)3Cl(OH)18 · 7H2O |
4.JN.40 | Tamboite | Fe3+3(OH)(H2O)2(SO4)(Te4+O3)3(Te4+O(OH)2)(H2O)3 |
Fluorescence of Metatamboite
None
Other Information
Special Storage/
Display Requirements:
Display Requirements:
Changes in humidity will convert to tamboite
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 Metatamboite
mindat.org URL:
https://www.mindat.org/min-50356.html
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References for Metatamboite
Localities for Metatamboite
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.
Chile (TL) | |
| Mineralogical Magazine +2 other references |
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