Rouseite
A valid IMA mineral species
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About Rouseite
Formula:
Pb2Mn2+[AsO3]2 · 2H2O
Colour:
Yellow orange
Lustre:
Vitreous, Dull
Hardness:
3
Specific Gravity:
5.73 (Calculated)
Crystal System:
Triclinic
Name:
Named in honor of Dr. Roland C. Rouse (b. 1943), professor, Department of Geology and Mineralogy, University of Michigan, Ann Arbor, Michigan, USA. He described/codescribed approximately 25 new minerals.
This page provides mineralogical data about Rouseite.
Unique Identifiers
Mindat ID:
3463
Long-form identifier:
mindat:1:1:3463:6
Similar Names
| Raisaite | A valid IMA mineral species | CuMg[Te6+O4(OH)2] · 6H2O |
| Riesite | A valid IMA mineral species | TiO2 |
| Risséite | A synonym of Aurichalcite | |
| Roseite | (Os,Ir)S | |
| Rosite (of Huot) | A synonym of Chalcostibite | |
| Rossite | A valid IMA mineral species - grandfathered | Ca(VO3)2 · 4H2O |
| Ruizite | A valid IMA mineral species | Ca2Mn23+[Si4O11(OH)2](OH)2 · 2H2O |
| Russoite | A valid IMA mineral species | (NH4)ClAs2O3(H2O)0.5 |
IMA Classification of Rouseite
Approved
IMA Formula:
Pb2+2Mn2+(As3+O3)2·2H2O
Approval year:
1984
First published:
1986
Classification of Rouseite
4.JC.15
4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
J : Arsenites, antimonites, bismuthites, sulfites, selenites, tellurites; iodates
C : Arsenites, antimonites, bismuthites; without 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
C : Arsenites, antimonites, bismuthites; without additional anions, with H2O
45.1.2.2
45 : ACID AND NORMAL ANTIMONITES AND ARSENITES
1 : Miscellaneous
45 : ACID AND NORMAL ANTIMONITES AND ARSENITES
1 : Miscellaneous
23.13
23 : Arsenites
23 : Arsenites
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 |
|---|---|---|
| Rus | 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 Rouseite
Vitreous, Dull
Transparency:
Transparent, Translucent
Comment:
Vitreous on cleavage surfaces.
Colour:
Yellow orange
Comment:
Colorless in transmitted light.
Streak:
Light yellow
Hardness:
3 on Mohs scale
Tenacity:
Brittle
Cleavage:
Perfect
{010} and {110}
{010} and {110}
Density:
5.73 g/cm3 (Calculated)
Optical Data of Rouseite
Type:
Biaxial (-)
RI values:
nα = 1.8 - 1.9 nγ = 1.9
2V:
Measured: 46° (2)
Birefringence:
Estimated to be 0.070
Surface Relief:
Moderate
Dispersion:
r > v, strong.
Comments:
RI α is estimated to be between 1.8-1.9. The mineral reacted with fluids having RI greater than 1.78.
Chemistry of Rouseite
Mindat Formula:
Pb2Mn2+[AsO3]2 · 2H2O
Element Weights:
Crystallography of Rouseite
Crystal System:
Triclinic
Cell Parameters:
a = 6.36(2) Å, b = 7.29(2) Å, c = 5.54(2) Å
α = 97.3(3)°, β = 114.2(2)°, γ = 106(2)°
α = 97.3(3)°, β = 114.2(2)°, γ = 106(2)°
Ratio:
a:b:c = 0.872 : 1 : 0.76
Unit Cell V:
216.60 ų (Calculated from Unit Cell)
Z:
1
Morphology:
Type material: Crystals elongate parallel to [001], with large {010} and smaller {110} faces. Smaller crystals, also showed {102}.
Comment:
Point Group: 1 or 1; Space Group: P1 or P1.
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 6.81 Å | (100) |
| 2.849 Å | (90) |
| 2.983 Å | (80) |
| 3.06 Å | (70) |
| 3.38 Å | (60) |
| 3.25 Å | (60) |
| 2.016 Å | (60) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| High-? alteration and/or metamorphism | |
| 32 : Ba/Mn/Pb/Zn deposits, including metamorphic deposits | |
| Stage 7: Great Oxidation Event | <2.4 |
| 47a : [Near-surface hydration of prior minerals] | |
| 47d : [Arsenates, antimonates, selenates, bismuthinates] | |
| 47e : [Vanadates, chromates, manganates] |
Type Occurrence of Rouseite
General Appearance of Type Material:
Crystals to 0.2 mm.
Place of Conservation of Type Material:
National Museum of Natural History (Smithsonian Institution), Washington, D.C., USA, #NMNH 94942.
Geological Setting of Type Material:
In a secondary fracture cutting calcite-hausmannite ore.
Associated Minerals at Type Locality:
Synonyms of Rouseite
Other Language Names for Rouseite
Common Associates
Related Minerals - Strunz-mindat Grouping
| 4.JC.05 | Cafarsite | Ca5.9Mn1.7Fe3Ti3(AsO3)12 · 4-5H2O |
| 4.JC.10 | Lazarenkoite | (Ca,Fe2+)Fe3+As3+3O7 · 3H2O |
| 4.JC.20 | Vajdakite | [(Mo6+O2)2(H2O)2As3+2O5] · 3H2O |
Fluorescence of Rouseite
None
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 Rouseite
mindat.org URL:
https://www.mindat.org/min-3463.html
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References for Rouseite
Localities for Rouseite
Showing 1 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.
Sweden (TL) | |
| Dunn et al. (1986) +2 other references |
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Långban Mine, Långban Ore District, Filipstad, Värmland County, Sweden