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Cleusonite

Big Photo

Kaiserer quarry, Hüttwinkl valley, Rauris valley, Hohe Tauern Mts, 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
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

Member of Group:
Crichtonite Group:
AB
 
21
O
 
38
 or A{BC
 
2
D
 
6
 E
 
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.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.40Davidite-(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
 
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.45IMA2009-030
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

    Show Locality List (7 Items)
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