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Cleusonite

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Kaiserer quarry, Hüttwinkl valley, Rauris valley, Hohe Tauern Mts, Salzburg, Austria
© AL

Show Cleusonite Photos (4)
Formula:
(Pb,Sr)(U
4+
 
,U
6+
 
)(Fe
2+
 
,Zn)
 
2
(Ti,Fe
2+
 
,Fe
3+
 
)
 
18
(O,OH)
 
38
System:TrigonalColour:Black
Name:For the type locality


A member of the Crichtonite Group.

Cleusonite is partly metamict. The radiation damage results in macroscopic swelling (i. e. variable density and unit cell dimensions) and also makes the mineral appear optically isotropic. The calculated density and the crystallographical data given here are those of a crystal treated at 1000 °C (Wülser et al., 2005).

Classification of Cleusonite

IMA status:Approved 1998
Strunz 8th edition ID:4/C.09-90
Nickel-Strunz 10th (pending) edition ID:4.CC.40

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
C : Metal: Oxygen = 2: 3,3: 5, and similar
C : With large and medium-sized cations
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Type Occurrence of Cleusonite

Type Locality:Cleuson lake, Nendaz Valley, Wallis (Valais), Switzerland
General Appearance of Type Material:cm-sized tabular crystals
Geological Setting of type material:greenschist facies metamorphosed gneissic series of the Mont Fort and Siviez-Mischabel Nappes

Physical Properties of Cleusonite

Lustre:Sub-Metallic
Diaphaneity (Transparency):Opaque
Colour:Black
Density (measured):4.74 - 4.93 g/cm3
Density (calculated):5.27 g/cm3

Crystallography of Cleusonite

Crystal System:Trigonal
Class (H-M):3 - Pyramidal
Space Group:R3
Cell Parameters:a = 10.385(2) Å, c = 20.900(7) Å
Ratio:a:c = 1 : 2.013
Unit Cell Volume:V 1,952.05 ų (Calculated from Unit Cell)
Morphology:Multiple rhombohedra and hexagonal prisms.
Twinning:Generally twinned.
Comment:Cells: a = 10.576(3), c = 21.325(5) Å (untreated crystal) to a = 10.4188(6), c = 20.942(1) Å (800°C treatment) and to a = 10.385(2), c = 20.900(7) Å (1000°C treatment).

Optical Data of Cleusonite

Type:Isotropic
Colour in reflected light:light grey to white

Chemical Properties of Cleusonite

Formula:
(Pb,Sr)(U
4+
 
,U
6+
 
)(Fe
2+
 
,Zn)
 
2
(Ti,Fe
2+
 
,Fe
3+
 
)
 
18
(O,OH)
 
38
All elements listed in formula:Fe, H, O, Pb, Sr, Ti, U, Zn
Common Impurities:Al,Mn,V

Relationship of Cleusonite to other Species

Related to:
  • Crichtonite Group
    • Related Minerals - Nickel-Strunz Grouping):

    - +
    4.CC.05Chrombismite
    Bi
     
    16
    		CrO
     
    27
    4.CC.10Freudenbergite
    Na
     
    2
    		(Ti,Fe)
     
    8
    		O
     
    16
    4.CC.15Grossite
    CaAl
     
    4
    		O
     
    7
    4.CC.20Mayenite
    Ca
     
    12
    		Al
     
    14
    		O
     
    33
    4.CC.25Yafsoanite
    Ca
     
    3
    		Zn
     
    3
    		[TeO
     
    6
    		]
     
    2
    4.CC.30Latrappite
    (Ca,Na)(Nb,Ti,Fe)O
     
    3
    4.CC.30Lueshite
    NaNbO
     
    3
    4.CC.30Natroniobite
    NaNbO
     
    3
    4.CC.30Perovskite
    CaTiO
     
    3
    4.CC.30Barioperovskite
    BaTiO
     
    3
    4.CC.30Lakargiite
    Ca(Zr,Sn,Ti)O
     
    3
    4.CC.35Loparite-(Ce)
    (Na,Ce,Ca,Sr,Th)(Ti,Nb,Fe)O
     
    3
    4.CC.35Macedonite
    PbTiO
     
    3
    4.CC.35Tausonite
    SrTiO
     
    3
    4.CC.35Isolueshite
    (Na,La,Ca)(Nb,Ti)O
     
    3
    4.CC.40Crichtonite
    (Sr,La,Ce,Y)(Ti,Fe
    3+
     
    		,Mn)
     
    21
    		O
     
    38
    4.CC.40Davidite-(Ce)
    (Ce,La)(Y,U,Fe)(Ti,Fe)
     
    20
    		(O,OH)
     
    38
    4.CC.40Davidite-(La)
    (La,Ce)(Y,U,Fe)(Ti,Fe)
     
    20
    		(O,OH)
     
    38
    4.CC.40"Davidite-(Y)"
    (La,Ce,Ca,□)(U,Y)(Fe
    3+
     
    		,Mg)
     
    2
    		(Ti,Fe
    3+
     
    		,Cr,]
     
    18
    		O
     
    38
    4.CC.40Landauite
    NaMnZn
     
    2
    		(Ti,Fe)
     
    6
    		Ti
     
    12
    		O
     
    38
    4.CC.40Lindsleyite
    (Ba,Sr)(Ti,Zr,Fe,Cr)
     
    21
    		O
     
    38
    4.CC.40Loveringite
    (Ca,Ce)(Ti,Fe,Cr,Mg)
     
    21
    		O
     
    38
    4.CC.40Mathiasite
    K(Ti,Cr,Fe,Mg,Zr)
     
    21
    		O
     
    38
    4.CC.40Senaite
    Pb(Ti,Fe,Mn)
     
    21
    		O
     
    38
    4.CC.40Dessauite-(Y)
    (Sr,Pb)(Y,U)(Ti,Fe
    3+
     
    		)
     
    20
    		O
     
    38
    4.CC.40Gramaccioliite-(Y)
    (Pb,Sr)(Y,Mn)Fe
    3+
    2
    		(Ti,Fe
    3+
     
    		)
     
    18
    		O
     
    38
    4.CC.45Diaoyudaoite
    NaAl
     
    11
    		O
     
    17
    4.CC.45Hawthorneite
    BaMgTi
     
    3
    		Cr
     
    4
    		Fe
     
    4
    		O
     
    19
    4.CC.45Hibonite
    (Ca,Ce)(Al,Fe,Ti,Si,Mg)
     
    12
    		O
     
    19
    4.CC.45Lindqvistite
    Pb
     
    2
    		(Mg,Fe)Fe
     
    16
    		O
     
    27
    4.CC.45Magnetoplumbite
    (Pb,Mn)(Fe,Mn)
     
    12
    		O
     
    19
    4.CC.45Plumboferrite
    PbFe
     
    4
    		O
     
    7
    4.CC.45Yimengite
    K(Cr,Ti,Fe,Mg)
     
    12
    		O
     
    19
    4.CC.45Haggertyite
    Ba[Fe
    2+
    6
    		Ti
     
    5
    		Mg]O
     
    19
    4.CC.45Nežilovite
    PbZn
     
    2
    		(Mn
    4+
     
    		,Ti
    4+
     
    		)
     
    2
    		Fe
    3+
    8
    		O
     
    19
    4.CC.45Batiferrite
    Ba[Ti
     
    2
    		Fe
    3+
    8
    		Fe
    2+
    2
    		]O
     
    19
    4.CC.50Jeppeite
    (K,Ba)
     
    2
    		(Ti,Fe)
     
    6
    		O
     
    13
    4.CC.55Zenzénite
    Pb
     
    3
    		(Fe,Mn)
     
    4
    		Mn
     
    3
    		O
     
    13
    4.CC.60Mengxianminite
    (Ca,Na)
     
    3
    		(Fe,Mn)
     
    2
    		Mg
     
    2
    		(Sn,Zn)
     
    5
    		Al
     
    8
    		O
     
    29

    Other Names for Cleusonite

    Synonyms:
    IMA1998-070PlumbodaviditeUranium-rich Senaite
    Other Languages:

    Other Information

    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 Cleusonite

    Reference List:Wülser, P.-A., Meisser, N., Brugger, J., Schenk, K., Ansermet, S., Bonin, M., Bussy, F. (2005): Cleusonite, (Pb,Sr)(U4+,U6+)(Fe2+,Zn)2(Ti,Fe2+,Fe3+)18(O,OH)38, a new mineral species of the crichtonite group from the western Swiss Alps. European Journal of Mineralogy, 17, 933-942

    Internet Links for Cleusonite

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    Localities for Cleusonite

    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.
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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.
    Austria
     
    • Carinthia
      • Hohe Tauern Mts
        • Hafner group
          • Rennweg
            • Katschberg Mt.
    		Niedermayr, G. et al. (2007): Neue Mineralfunde aus Österreich LVI. Carinthia II, 197/117, 149-190.
    • Salzburg
      • Hohe Tauern Mts
        • Rauris valley
          • Hüttwinkl valley
    		Gerhard Brandstetter collection (analysed); Blass, G. & Graf, H.W. (2004): „Cleusonit“ vom Kaiserer-Bruch im Rauriser Tal - Informationen zum Senait-Crichtonit-Problem. MINERALIEN-Welt 15 (3), 80; BRANDSTÄTTER, F. & NIEDERMAYR, G. (2008): 1539. Cleusonit (ehemals „Senait“) aus den „Gneisplatten“-Brüchen in der Rauris und von der „Pramleiten“, südlich Schellgaden im Lungau – eine Richtigstellung. In: G. Niedermayr, C. Bauer, F. Bernhard, G. Blass, H.-P. Bojar, F. Brandstätter, J. Gröbner, V. M. F. Hammer, G. Koch, U. Kolitsch, B. Leikauf, C. Loránth, R. Poeverlein, W. Postl, H. Prasnik, T. Schachinger, P. Tomazic & F. Walter, Neue Mineralfunde aus Österreich LVII, Carinthia II, 198/118, 248-249.
    BRANDSTÄTTER, F. & NIEDERMAYR, G. (2008): 1539. Cleusonit (ehemals „Senait“) aus den „Gneisplatten“-Brüchen in der Rauris und von der „Pramleiten“, südlich Schellgaden im Lungau – eine Richtigstellung. In: G. Niedermayr, C. Bauer, F. Bernhard, G. Blass, H.-P. Bojar, F. Brandstätter, J. Gröbner, V. M. F. Hammer, G. Koch, U. Kolitsch, B. Leikauf, C. Loránth, R. Poeverlein, W. Postl, H. Prasnik, T. Schachinger, P. Tomazic & F. Walter, Neue Mineralfunde aus Österreich LVII, Carinthia II, 198/118, 248-249.
    China
     
    • Shaanxi Province
      • Weinan Prefecture
        • Hua Co.
    		Wang Deyin (1981), Plumbodavidite - a new variety of davidite. Kexue Tongbao 26/10, 915-919
    Republic of Macedonia
     
    P.-A. Wülser et al.: Eur. J. Mineral. 17:933-942 (2005)
    Switzerland
     
    • Wallis (Valais)
      • Anniviers Valley
        • Saint-Luc
    		Wulser P.A. et al. 2005, Eur. J. Mineral. 17, 933-942
      • Nendaz Valley
    		P.-A. Wülser et al.: Eur. J. Mineral. 17:933-942 (2005)
    Mineral and/or Locality
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