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Cleusonite

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Big Photo

Kaiserer quarry (Deisl quarry), Hüttwinkl valley, Rauris valley, Hohe Tauern, Salzburg, Austria
© AL

Show Cleusonite Photos (7)



Formula:
(Pb,Sr)(U
4+
 
,U
6+
 
)(Fe
2+
 
,Zn)
 
2
(Ti,Fe
2+
 
,Fe
3+
 
)
 
18
(O,OH)
 
38
System:TrigonalColour:Black
Member of:Crichtonite Group
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).

A large number of U-bearing "senaites" from Alpine localities later turned out to be cleusonite instead.

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
Essential elements:Fe, O, Pb, Ti, U
All elements listed in formula:Fe, H, O, Pb, Sr, Ti, U, Zn
Common Impurities:Al,Mn,V

Relationship of Cleusonite to other Species

Member of:Crichtonite Group
Other Members of Group:

- +
Crichtonite
(Sr,La,Ce,Y)(Ti,Fe
3+
 
,Mn)
 
21
O
 
38
Davidite-(Ce)
(Ce,La)(Y,U,Fe)(Ti,Fe)
 
20
(O,OH)
 
38
Davidite-(La)
(La,Ce)(Y,U,Fe)(Ti,Fe)
 
20
(O,OH)
 
38
Davidite-(Y)
(Y,La,Ce,Na,Ca,Pb)(Y,Fe
2+
 
,◻)(Fe
2+
 
,Mn
2+
 
)
 
2
(Ti,Fe
3+
 
,Nb,Zr)
 
18
O
 
38
 (hypothetical)
Dessauite-(Y)
(Sr,Pb)(Y,U)(Ti,Fe
3+
 
)
 
20
O
 
38
Gramaccioliite-(Y)
(Pb,Sr)(Y,Mn)Fe
3+
2
(Ti,Fe
3+
 
)
 
18
O
 
38
Landauite
NaMnZn
 
2
(Ti,Fe)
 
6
Ti
 
12
O
 
38
Lindsleyite
(Ba,Sr)(Ti,Zr,Fe,Cr)
 
21
O
 
38
Loveringite
(Ca,Ce)(Ti,Fe,Cr,Mg)
 
21
O
 
38
Mathiasite
K(Ti,Cr,Fe,Mg,Zr)
 
21
O
 
38
Paseroite
PbMn
2+
 
(Fe
3+
 
,◻)
 
2
(V
5+
 
,Ti,◻)
 
18
O
 
38
Romanite
(◻,Pb,Ca)UFe
2+
2
(Ti,Fe
3+
 
)
 
6
Ti
 
12
O
 
38
Senaite
Pb(Ti,Fe,Mn)
 
21
O
 
38
Unnamed (HBU UK-4)
NaFe
2+
 
Zn
 
2
(Ti,Fe
3+
 
,Nb)
 
6
Ti
 
12
O
 
38
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.20Brearleyite
Ca
 
12
Al
 
14
O
 
32
Cl
 
2
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.30Megawite
CaSnO
 
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.40Davidite-(Y)
(Y,La,Ce,Na,Ca,Pb)(Y,Fe
2+
 
,◻)(Fe
2+
 
,Mn
2+
 
)
 
2
(Ti,Fe
3+
 
,Nb,Zr)
 
18
O
 
38
 (hypothetical)
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
Ba(MgTi
 
3
Cr
 
4
Fe
 
4
)O
 
19
4.CC.45Hibonite
(Ca,Ce)Al
 
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
Pb
 
2
Fe
3+
11-x
Mn
2+
x
O
 
19-2x
, x = 1/3
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.45IMA2009-027
(Fe,Mg)Al
 
12
O
 
19
4.CC.45Barioferrite
BaFe
3+
12
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

    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.
    Hide Locality List
    (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
        • Hafner group
          • Rennweg
            • Katschberg
    		Niedermayr, G. et al. (2007): Neue Mineralfunde aus Österreich LVI. Carinthia II, 197/117, 149-190.
    • Lower Austria
      • Waldviertel
        • Brunn an der Wild
          • Atzelsdorf
    		Pristacz, H., jun., Kolitsch, U., Löffler, E., Knobloch, G., Prayer, A. & Thinschmidt, A. (2011): 1696) Calcit, Natrojarosit, Palygorskit, Pyrit, Siderit und andere Mineralien aus dem Marmorbruch Atzelsdorf, Brunn an der Wild, Waldviertel. Pp. 160-161 in Niedermayr, G. et al. (2011): Neue Mineralfunde aus Österreich LX. Carinthia II, 201./121., 135-186.
    • Salzburg
      • Hohe Tauern
        • 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.
    		Dianhao Huang, Yichang Wang, Fengjun Nie, and Xiujie Jiang (1984): Acta Geologica Sinica 63(3)
    Italy
     
    • Trentino-Alto Adige
      • Bolzano Province (South Tyrol)
        • Vizze Valley (Pfitsch Valley)
          • San Giacomo
            • Vizze pass (Pfitsch pass)
    		Folie, K., P. Gentile, M. Hanke & I. Rocchetti (2010): Mineralien aus der Umgebung des Pfitscher Jochs in Südtirol (II). Mineralien-Welt 21 (4), 42-67.
    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)
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    Copyright © Jolyon Ralph and Ida Chau 1993-2012. 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. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
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