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:
Very High (positive)
Relative to Canada balsam mounting medium (n ≈ 1.537).
Relative to Canada balsam mounting medium (n ≈ 1.537).
This shows the grain boundary and Becke line effect under plane-polarised
light, based on the contrast between this mineral's average refractive
index and the mounting medium. It does not take into account mineral
colouration.
In focus
Interference Figure:
This shows the idealized biaxial acute bisectrix (Bxa) interference figure
- the conoscopic view for a grain cut perpendicular to the acute bisectrix, using
this mineral's 2V. The two small white dots mark the melatopes - the points
where the two optic axes emerge - and are shown only when they fall within the
field of view. The coloured bands are isochromatics, and the dark bands are
isogyres.
Rotate the stage: at 0°/90° the isogyres form a cross through the melatopes; at 45° they pull apart into curved hyperbolas. That splitting on rotation - absent in a uniaxial figure - is the standard diagnostic test for telling biaxial minerals from uniaxial ones. If 2V is large, the melatopes may fall outside the field of view, as they often do at the microscope too.
Rotate the stage: at 0°/90° the isogyres form a cross through the melatopes; at 45° they pull apart into curved hyperbolas. That splitting on rotation - absent in a uniaxial figure - is the standard diagnostic test for telling biaxial minerals from uniaxial ones. If 2V is large, the melatopes may fall outside the field of view, as they often do at the microscope too.
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
Load
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
Show
Big Balls | Small Balls | Just Balls | Spacefill
Polyhedra Off | Si Polyhedra | All Polyhedra
Remove metal-metal sticks
Big Balls | Small Balls | Just Balls | Spacefill
Polyhedra Off | Si Polyhedra | All Polyhedra
Remove metal-metal sticks
Display Options
Black Background | White Background
Perspective On | Perspective Off
2D | Stereo | Red-Blue | Red-Cyan
Black Background | White Background
Perspective On | Perspective Off
2D | Stereo | Red-Blue | Red-Cyan
View
CIF File Best | x | y | z | a | b | c
CIF File Best | x | y | z | a | b | c
Rotation
Stop | Start
Stop | Start
Labels
Console Off | On | Grey | Yellow
Console Off | On | Grey | Yellow
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) |
Quick NavTopAbout MroseiteUnique IdentifiersSimilar NamesIMA Classification Classification Mineral SymbolsPhysical Properties Optical Data Chemistry Crystallography Crystal StructureX-Ray Powder DiffractionGeological EnvironmentType Occurrence SynonymsOther LanguagesCommon AssociatesStrunz-MindatOther InformationInternet Links References Localities Locality List
Moctezuma Mine, Moctezuma, Moctezuma Municipality, Sonora, Mexico