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Cleusonite

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Cleuson Lake, with mineral outcrop on the left

Cleuson lake, Nendaz Valley, Wallis, Switzerland
Formula:
(Pb,Sr)(U4+,U6+)(Fe2+,Zn)2(Ti,Fe2+,Fe3+)18(O,OH)38
Colour:
Black
Lustre:
Sub-Metallic
Specific Gravity:
4.74 - 4.93
Crystal System:
Trigonal
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.


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Classification of CleusoniteHide

Approved
Approval Year:
1998
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

Physical Properties of CleusoniteHide

Sub-Metallic
Transparency:
Opaque
Colour:
Black
Density:
4.74 - 4.93 g/cm3 (Measured)    5.27 g/cm3 (Calculated)

Optical Data of CleusoniteHide

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

Chemical Properties of CleusoniteHide

Formula:
(Pb,Sr)(U4+,U6+)(Fe2+,Zn)2(Ti,Fe2+,Fe3+)18(O,OH)38
IMA Formula:
Pb(U4+,U6+)Fe2+2(Ti,Fe2+,Fe3+)18(O,OH)38
Common Impurities:
Al,Mn,V

Crystallography of CleusoniteHide

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 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).

Type Occurrence of CleusoniteHide

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

Synonyms of CleusoniteHide

Other Language Names for CleusoniteHide

Simplified Chinese:羟铅铀钛铁矿
Traditional Chinese:羥鉛鈾鈦鐵礦

Relationship of Cleusonite to other SpeciesHide

Other Members of this group:
AlmeidaitePbZn2(Mn,Y)(Ti,Fe3+)18O37(OH,O)Trig. 3 : R3
CrichtoniteSr(Mn,Y,U)Fe2(Ti,Fe,Cr,V)18(O,OH)38Trig. 3 : R3
Davidite-(Ce)(Ce,La)(Y,U,Fe)(Ti,Fe)20(O,OH)38Trig. 3 : R3
Davidite-(La)(La,Ce)(Y,U,Fe)(Ti,Fe)20(O,OH)38Trig.
Davidite-(Y)(La,Ce,Na,Ca,Pb)(Y,Fe2+,◻)(Fe2+,Mn2+)2(Ti,Fe3+,Nb,Zr)18O38 (hypothetical)Trig.
Dessauite-(Y)(Sr,Pb)(Y,U)(Ti,Fe3+)20O38Trig. 3 : R3
Gramaccioliite-(Y)(Pb,Sr)(Y,Mn)Fe3+2(Ti,Fe3+)18O38Trig. 3
LandauiteNaMnZn2(Ti,Fe)6Ti12O38Trig. 3 : R3
Lindsleyite(Ba,Sr)(Zr,Ca)(Fe,Mg)2(Ti,Cr,Fe)18O38Trig.
Loveringite(Ca,Ce,La)(Zr,Fe)(Mg,Fe)2(Ti,Fe,Cr,Al)18O38Trig.
Mapiquiroite(Sr,Pb)(U,Y)Fe2(Ti,Fe3+,Cr3+)18O38Trig. 3 : R3
Mathiasite(K, Ba, Sr)(Zr, Fe)(Mg,Fe)2 (Ti,Cr,Fe)18O38Trig.
Mianningite(◻,Pb,Ce,Na)(U4+,Mn,U6+)Fe3+2 (Ti,Fe3+)18O38Trig. 3 : R3
PaseroitePbMn2+(Mn2+,Fe3+)2(V5+,Ti,◻)18O38 Trig. 3 : R3
SenaitePb(Mn,Y,U)(Fe,Zn)2(Ti,Fe,Cr,V)18(O,OH)38Trig.
UM1987-03-O:FePbTiU~(U,Pb)(Ti,Fe3+,Fe2+,Mn)21O38Trig. 3 : R3
Unnamed (HBU UK-4)NaFe2+Zn2(Ti,Fe3+,Nb)6Ti12O38Trig. 3 : R3

Common AssociatesHide

Associated Minerals Based on Photo Data:
Quartz6 photos of Cleusonite associated with Quartz on mindat.org.
Hematite2 photos of Cleusonite associated with Hematite on mindat.org.
Rutile2 photos of Cleusonite associated with Rutile on mindat.org.
Tourmaline2 photos of Cleusonite associated with Tourmaline on mindat.org.
Adularia1 photo of Cleusonite associated with Adularia on mindat.org.
Muscovite1 photo of Cleusonite associated with Muscovite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

4.CC.AllendeiteSc4Zr3O12Trig. 3 : R3
4.CC.Yttriaite-(Y)Y2O3Iso.
4.CC.05ChrombismiteBi16CrO27Tet.
4.CC.10FreudenbergiteNa2(Ti,Fe)8O16Mon.
4.CC.15GrossiteCaAl4O7Mon. 2/m : B2/b
4.CC.20ChlormayeniteCa12Al14O32[◻4Cl2]Iso. 4 3m : I4 3d
4.CC.25YafsoaniteCa3Zn3(TeO6)2Iso. m3 (2/m 3)
4.CC.30LatrappiteCa2NbFe3+O6Orth. mmm (2/m 2/m 2/m) : Pnma
4.CC.30LueshiteNaNbO3Orth. mmm (2/m 2/m 2/m)
4.CC.30NatroniobiteNaNbO3Mon.
4.CC.30PerovskiteCaTiO3Orth. mmm (2/m 2/m 2/m) : Pnma
4.CC.30BarioperovskiteBaTiO3Orth. mm2 : Amm2
4.CC.30LakargiiteCa(Zr,Sn,Ti)O3Orth. mmm (2/m 2/m 2/m) : Pnma
4.CC.30MegawiteCaSnO3Orth. mmm (2/m 2/m 2/m) : Pban
4.CC.35Loparite-(Ce)(Na,REE)Ti2O6
4.CC.35MacedonitePbTiO3Tet. 4/mmm (4/m 2/m 2/m) : P4/nmm
4.CC.35TausoniteSrTiO3Iso. 4 3m
4.CC.35Isolueshite(Na,La)NbO3Iso. m3m (4/m 3 2/m) : Pm3m
4.CC.40CrichtoniteSr(Mn,Y,U)Fe2(Ti,Fe,Cr,V)18(O,OH)38Trig. 3 : R3
4.CC.40Davidite-(Ce)(Ce,La)(Y,U,Fe)(Ti,Fe)20(O,OH)38Trig. 3 : R3
4.CC.40Davidite-(La)(La,Ce)(Y,U,Fe)(Ti,Fe)20(O,OH)38Trig.
4.CC.40Davidite-(Y)(La,Ce,Na,Ca,Pb)(Y,Fe2+,◻)(Fe2+,Mn2+)2(Ti,Fe3+,Nb,Zr)18O38 (hypothetical)Trig.
4.CC.40LandauiteNaMnZn2(Ti,Fe)6Ti12O38Trig. 3 : R3
4.CC.40Lindsleyite(Ba,Sr)(Zr,Ca)(Fe,Mg)2(Ti,Cr,Fe)18O38Trig.
4.CC.40Loveringite(Ca,Ce,La)(Zr,Fe)(Mg,Fe)2(Ti,Fe,Cr,Al)18O38Trig.
4.CC.40Mathiasite(K, Ba, Sr)(Zr, Fe)(Mg,Fe)2 (Ti,Cr,Fe)18O38Trig.
4.CC.40SenaitePb(Mn,Y,U)(Fe,Zn)2(Ti,Fe,Cr,V)18(O,OH)38Trig.
4.CC.40Dessauite-(Y)(Sr,Pb)(Y,U)(Ti,Fe3+)20O38Trig. 3 : R3
4.CC.40Gramaccioliite-(Y)(Pb,Sr)(Y,Mn)Fe3+2(Ti,Fe3+)18O38Trig. 3
4.CC.45DiaoyudaoiteNaAl11O17Hex.
4.CC.45HawthorneiteBaMgTi3Cr4Fe2+2Fe3+2O19Hex. 6/mmm (6/m 2/m 2/m) : P63/mmc
4.CC.45Hibonite(Ca,Ce)(Al,Ti,Mg)12O19Hex.
4.CC.45LindqvistitePb2Mn2+Fe16O27Hex.
4.CC.45Magnetoplumbite(Pb,Mn)(Fe,Mn)12O19Hex.
4.CC.45PlumboferritePb2(Fe3+,Mn2+,Mg)11O19Trig. 3 2
4.CC.45YimengiteK(Cr,Ti,Fe,Mg)12O19Hex.
4.CC.45HaggertyiteBaFe2+4Fe3+2Ti5MgO19Hex. 6/mmm (6/m 2/m 2/m) : P63/mmc
4.CC.45NežilovitePbZn2Mn4+2Fe3+8O19Hex. 6/mmm (6/m 2/m 2/m) : P63/mmc
4.CC.45BatiferriteBaTi2Fe3+8Fe2+2O19Hex.
4.CC.45Hibonite-(Fe)(Fe,Mg)Al12O19Hex. 6/mmm (6/m 2/m 2/m) : P63/mmc
4.CC.45BarioferriteBaFe3+12O19Hex. 6/mmm (6/m 2/m 2/m) : P63/mmc
4.CC.50Jeppeite(K,Ba)2(Ti,Fe)6O13Mon.
4.CC.55ZenzénitePb3Fe4Mn3O15Hex.
4.CC.60Mengxianminite (of Huang et al.)(Ca,Na)3(Fe,Mn)2Mg2(Sn,Zn)5Al8O29

Other InformationHide

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for CleusoniteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
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 CleusoniteHide

Localities for CleusoniteHide

This 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.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
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 (Trentino-Südtirol)
    • Bolzano Province (South Tyrol)
      • Vizze Valley (Pfitsch Valley)
        • San Giacomo (Sankt Jakob)
          • Vizze Pass (Pfitsch Pass; Pfitscher Joch)
Folie, K., Gentile, P., Hanke, M., Rocchetti, I. (2010): Mineralien aus der Umgebung des Pfitscher Jochs in Südtirol (II). Mineralien-Welt, 21, 4, 42-67.
Republic of Macedonia
 
  • Bitola
P.-A. Wülser et al.: Eur. J. Mineral. 17:933-942 (2005)
Russia
 
  • Far-Eastern Region
    • Amurskaya Oblast'
      • Dambuki ore cluster
Anatoly Kasatkin analytical data 2016
Switzerland
 
  • Ticino (Tessin)
    • Leventina
      • Central St Gotthard Massif
        • Fontana
Beppe Raineri find & collection
  • Wallis (Valais)
    • Anniviers Valley
      • Chandolin
Ansermet, S. (2012): Mines et minéraux du Valais - II. Anniviers et Tourtemagne. With contributions by N. Meisser, Ed. Porte-plumes (Ayer)
      • Saint-Luc
Wulser P.A. et al. 2005, Eur. J. Mineral. 17, 933-942
Ansermet, S. (2012): Mines et minéraux du Valais - II. Anniviers et Tourtemagne. With contributions by N. Meisser, Ed. Porte-plumes (Ayer)
Ansermet, S. (2012): Mines et minéraux du Valais - II. Anniviers et Tourtemagne. With contributions by N. Meisser, Ed. Porte-plumes (Ayer)
Ansermet, S. (2012): Mines et minéraux du Valais - II. Anniviers et Tourtemagne. With contributions by N. Meisser, Ed. Porte-plumes (Ayer)
    • Nendaz Valley
Wülser et al.: Eur. J. Mineral. 17:933-942 (2005)
Mineral and/or Locality  
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