Mroseite
A valid IMA mineral species
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About Mroseite
Mary E. Mrose
Formula:
CaTe4+(CO3)O2
Colour:
Colorless to white
Lustre:
Adamantine
Hardness:
4
Specific Gravity:
4.35
Crystal System:
Orthorhombic
Name:
Named in honor of Mary Emma Mrose (1910-2003), mineralogist with the United States Geological Survey.
This page provides mineralogical data about Mroseite.
Unique Identifiers
Mindat ID:
2802
Long-form identifier:
mindat:1:1:2802:4
Similar Names
| Marosite (of Cook and Sherwood) | A rock subtype | |
| Marosite (of Iddings) | A rock subtype | |
| Oroseite | A synonym of 'Iddingsite' | |
| Roseite | (Os,Ir)S |
IMA Classification of Mroseite
Approved
IMA Formula:
CaTe4+O2(CO3)
Approval year:
1974
First published:
1975
Classification of Mroseite
4.JL.15
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
34.8.4.1
34 : SELENITES, TELLURITES AND SULFITES
8 : Compound Selenites, Tellurites and Sulfites
34 : SELENITES, TELLURITES AND SULFITES
8 : Compound Selenites, Tellurites and Sulfites
28.3.6
28 : Selenites, Selenates, Tellurites, and Tellurates
3 : Tellurites
28 : Selenites, Selenates, Tellurites, and Tellurates
3 : Tellurites
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 |
|---|---|---|
| Mros | 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 Mroseite
Adamantine
Transparency:
Translucent
Colour:
Colorless to white
Streak:
White
Hardness:
4 on Mohs scale
Density:
4.35 g/cm3 (Measured) 4.171 g/cm3 (Calculated)
Optical Data of Mroseite
Type:
Biaxial (-)
RI values:
nα = 1.79 nβ = 1.85 nγ = 1.89
2V:
Measured: 74° , Calculated: 76°
Max. Birefringence:
δ = 0.100
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:
Moderate
Dispersion:
r << v perceptible
Optical Extinction:
X = a; Y = c; Z = b.
Chemistry of Mroseite
Mindat Formula:
CaTe4+(CO3)O2
Element Weights:
Elements listed:
Crystallography of Mroseite
Crystal System:
Orthorhombic
Class (H-M):
mmm(2/m2/m2/m) - Dipyramidal
Space Group:
Pbca
Cell Parameters:
a = 6.988(15) Å, b = 11.201(10) Å, c = 10.566(10) Å
Ratio:
a:b:c = 0.624 : 1 : 0.943
Unit Cell V:
827.03 ų (Calculated from Unit Cell)
Z:
8
Morphology:
Elongated, small, commonly radiating structures, massive.
Crystal Structure
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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
| ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
|---|---|---|---|---|---|---|---|
| 0005119 | Mroseite | Fischer R, Pertlik F, Zemann J (1975) The crystal structure of mroseite, CaTeO2(CO3) The Canadian Mineralogist 13 383-387 |  | 1975 | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 3.14 Å | (100) |
| 5.14 Å | (90) |
| 4.20 Å | (80) |
| 1.97 Å | (80) |
| 3.35 Å | (70) |
| 3.02 Å | (70) |
| 2.39 Å | (70) |
Comments:
Moctezuma mine, Mexico. Data from the type description.
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Near-surface Processes | |
| 23 : Subaerial aqueous alteration by non-redox-sensitive fluids (see also #47) | |
| High-? alteration and/or metamorphism | |
| 33 : Minerals deposited by hydrothermal metal-rich fluids (see also [#12]) |
Type Occurrence of Mroseite
General Appearance of Type Material:
Colorless to white masses, often with a crude radiating structure.
Place of Conservation of Type Material:
Royal Ontario Museum, Ottawa, Ontario, Canada, number M33757.
Geological Setting of Type Material:
Hydrothermal Au-Te deposit.
Associated Minerals at Type Locality:
Synonyms of Mroseite
Other Language Names for Mroseite
Common Associates
Associations Based on Photo Data:
Related Minerals - Strunz-mindat Grouping
| 4.JL. | Chorążewiczite | Pb2Fe3+(Te6+O6)(HCO3) |
| 4.JL. | Tomiolloite | Al12(Te4+O3)5[(SO3)0.5(SO4)0.5](OH)24 |
| 4.JL.05 | Rodalquilarite | Fe2(TeO2OH)3(TeO3)Cl |
| 4.JL.10 | Mackayite | Fe3+(Te4+2O5)(OH) |
| 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) |
Other Information
Notes:
Effervesces in cold, dilute HCl.
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 Mroseite
mindat.org URL:
https://www.mindat.org/min-2802.html
Please feel free to link to this page.
Please feel free to link to this page.
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References for Mroseite
Reference List:
Mandarino, J. A., Mitchell, R. S., Hancock, R. G. V. (1975) Mroseite, a calcium tellurite-carbonate from Moctezuma, Sonora, Mexico. The Canadian Mineralogist, 13 (3) 286-288
Fleischer, Michael; Mandarino, Joseph A. (1975) New mineral names. American Mineralogist, 60 (9-10). 945-947
Fischer, R., Pertlik, F., Zemann, J. (1975) The crystal structure of mroseite, CaTeO2(CO3) The Canadian Mineralogist, 13 (4) 383-387
Mandarino, J. A., Mitchell, R. S., Hancock, R. G. V. (1975) Mroseite, a calcium tellurite-carbonate from Moctezuma, Sonora, Mexico. The Canadian Mineralogist, 13 (3) 286-288
Localities for Mroseite
Showing 3 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) | |
| Mandarino et al. (1975) |
| Panczner (1987) | |
USA | |
| Anthony et al. (1995) |
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Moctezuma Mine, Moctezuma, Moctezuma Municipality, Sonora, Mexico