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Rouseite

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
NaCa
 
6
(Mg,Fe,Li)
 
12
(AsO
 
3
)
 
2
[Fe(AsO
 
3
)
 
6
]F
 
14
·
23.3Leiteite
Zn[As
 
2
O
 
4
]
23.5Kuznetsovite
(Hg-Hg)Hg
2+
 
[Cl|AsO
 
4
]
23.6Paulmooreite
Pb
 
2
[As
 
2
O
 
5
]
23.7Ecdemite
Pb
 
6
[As
 
2
O
 
7
|Cl
 
4
]
23.8Heliophyllite
Pb
 
3
AsO
 
4-n
Cl
 
2n+1
23.9Finnemanite
Pb
 
5
[Cl|(AsO
 
3
)
 
3
]
23.10Gebhardite
Pb
 
8
[O|Cl
 
6
|(As
 
2
O
 
5
)
 
2
]
23.11Zimbabweite
(Na,K)
 
2
PbAs
 
4
(Ta,Nb,Ti)
 
4
O
 
18
23.14Freedite
Pb
 
15
(Cu,Fe
2+
 
)
 
3
[O
 
7
|Cl
 
10
|(AsO
 
3
)
 
4
]
23.15Manganarsite
Mn
 
3
[(OH)
 
4
|As
 
2
O
 
4
]
23.17Armangite
Mn
2+
26
[CO
 
3
|(HAsO
 
3
)
 
4
|(AsO
 
3
)
 
14
]
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
CaFeSbO(AsO
 
3
)
 
2
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

    Hide Locality List
    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.
    (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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    Copyright © Jolyon Ralph and Ida Chau 1993-2009. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them.Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. If you would like to add information to improve the quality of our database, then click here to register. Current server date and time: 7th Nov 2009 19:24:15