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Rouseite

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Formula:
Pb
 
2
Mn
2+
 
[AsO
 
3
]
 
2
 · 2H
 
2
O
System:TriclinicColour:Yellow orange
Hardness:3
Name:For Dr. Roland Rouse of University of Michigan
This page provides mineralogical data about Rouseite.

Classification of Rouseite

IMA status:Approved 1984
Strunz 8th edition ID:4/J.03-40
Nickel-Strunz 10th (pending) edition ID: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
Dana 8th edition ID:45.1.2.2

45 : ACID AND NORMAL ANTIMONITES AND ARSENITES
1 : Miscellaneous
Hey's CIM Ref.:23.13

23 : Arsenites
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Type Occurrence of Rouseite

Type Locality:Långban, Filipstad, Värmland, Sweden
Place of Conservation of Type Material:Smithsonian Institution. Specimen # NMNH 94942
Year of Discovery:1986
Geological Setting of type material:In a secondary fracture cutting calcite-hausmannite ore.

Physical Properties of Rouseite

Lustre:Vitreous
Colour:Yellow orange
Streak:Light yellow
Hardness (Mohs):3
Tenacity:Brittle
Cleavage:Perfect
{010} and {110}
Density (calculated):5.73 g/cm3

Crystallography of Rouseite

Crystal System:Triclinic
Cell Parameters:a = 6.36Å, b = 7.29Å, c = 5.54Å
α = 97.3°, β = 114.2°, γ = 106°
Ratio:a:b:c = 0.872 : 1 : 0.76
Unit Cell Volume:V 216.60 ų (Calculated from Unit Cell)

Optical Data of Rouseite

Type:Biaxial (-)
RI values: nα = 1.800 nγ = 1.900
2V:Measured: 46°
Birefringence:Estimated to be 0.070
Maximum Birefringence:δ = 0.100

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Moderate
Dispersion:r > v
Comments:RI alpha is estimated to be between 1.8-1.9. The mineral reacted with fluids having RI greater than 1.78.

Chemical Properties of Rouseite

Formula:
Pb
 
2
Mn
2+
 
[AsO
 
3
]
 
2
 · 2H
 
2
O
Essential elements:As, H, Mn, O, Pb
All elements listed in formula:As, H, Mn, O, Pb

Relationship of Rouseite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
4.JC.05Cafarsite
Ca
 
8
(Ti,Fe,Fe,Mn)
 
6-7
(AsO
 
3
)
 
12
 · 4H
 
2
O
4.JC.10Lazarenkoite
(Ca,Fe)FeAs
 
3
O
 
7
 · 3H
 
2
O
4.JC.20Vajdakite
[(Mo
6+
 
O
 
2
)
 
2
(H
 
2
O)
 
2
As
3+
2
O
 
5
] · 3H
 
2
O
Related Minerals - Hey's Index Grouping:

- +
23.2Nanlingite
NaMg
 
4
(AsO
 
3
)
 
2
F
 
4
23.3Leiteite
Zn(As
 
2
O
 
4
)
23.5Kuznetsovite
(Hg
+
2
)Hg
2+
 
(AsO
 
4
)Cl
23.6Paulmooreite
Pb
 
2
[As
 
2
O
 
5
]
23.7Ecdemite
Pb
 
6
Cl
 
4
(As
 
2
O
 
7
)
23.8Heliophyllite
Pb
 
6
Cl
 
4
(As
 
2
O
 
7
)
23.9Finnemanite
Pb
 
5
(AsO
 
3
)
 
3
Cl
23.10Gebhardite
Pb
 
8
(As
 
2
O
 
5
)
 
2
OCl
 
6
23.11Zimbabweite
(Na,K)
 
2
PbAs
 
4
(Ta,Nb,Ti)
 
4
O
 
18
23.14Freedite
Cu
+
 
Pb
 
8
(AsO
 
3
)
 
2
O
 
3
Cl
 
5
23.15Manganarsite
Mn
 
3
(As
 
2
O
 
4
)(OH)
 
4
23.17Armangite
Mn
2+
26
(AsO
 
3
)
 
14
(HAsO
 
3
)
 
4
(CO
 
3
)
23.18Karibibite
Fe
 
2
As
 
4
O
 
9
23.19Schneiderhöhnite
Fe
2+
 
Fe
3+
3
[As
 
5
O
 
13
]
23.20Lazarenkoite
(Ca,Fe)FeAs
 
3
O
 
7
 · 3H
 
2
O
23.21Stenhuggarite
CaFeSb(AsO
 
3
)
 
2
O
23.22Tomichite
(V,Fe)
 
4
Ti
 
3
AsO
 
13
(OH)

Other Names for Rouseite

Synonyms:
IMA1984-071
Other Languages:
German:Rouseit
Spanish:Rouseita

Other Information

Fluorescence in UV light:none
Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Rouseite

Reference List:

- +
American Mineralogist (1986): 71: 1034-1036.

Internet Links for Rouseite

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    • Localities for Rouseite

    The 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.
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    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    Sweden
     
    • Värmland
      • Filipstad
    		Amer.Min.(1986) 71, 1034-1036; Rocks & Min.: 62:166; Nysten, P., Holtstam, D. and Jonsson, E. (1999) The Långban minerals. In Långban - The mines,their minerals, geology and explorers (D. Holtstam and J. Langhof, eds.), Swedish Museum of Natural History and Raster Förlag, Stockholm & Chr. Weise Verlag, Munich, pp. 89-183.
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