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Dessauite-(Y)

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About Dessauite-(Y)Hide

00851600015038499746803.jpg
Gabor Dessau
Formula:
(Sr,Pb)(Y,U)(Ti,Fe3+)20O38
Colour:
black
Lustre:
Metallic
Hardness:
6½ - 7
Specific Gravity:
4.68 (Calculated)
Crystal System:
Trigonal
Name:
For Gabor Dessau (27 June 1907 in Perugia, Italy - 16 November 1983 in Pisa, Italy), professor of ore mineralogy at the University of Pisa, Italy.
A member of the Crichtonite Group.


Classification of Dessauite-(Y)Hide

Approved
Approval Year:
1994
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 Dessauite-(Y)Hide

Metallic
Transparency:
Opaque
Colour:
black
Hardness:
6½ - 7 on Mohs scale
Hardness:
VHN100=1105 - 1782 - Vickers
Cleavage:
None Observed
Fracture:
Conchoidal
Density:
4.68 g/cm3 (Calculated)

Optical Data of Dessauite-(Y)Hide

Type:
Anisotropic
Anisotropism:
weak
Bireflectance:
low
Colour in reflected light:
ash grey with pale bluish tones
Internal Reflections:
not observed
Pleochroism:
Weak

Chemical Properties of Dessauite-(Y)Hide

Formula:
(Sr,Pb)(Y,U)(Ti,Fe3+)20O38
IMA Formula:
Sr(Y,U,Mn)Fe2(Ti,Fe,Cr,V)18(O,OH)38

Crystallography of Dessauite-(Y)Hide

Crystal System:
Trigonal
Class (H-M):
3 - Rhombohedral
Space Group:
R3
Cell Parameters:
a = 9.197 Å
α = 68.75°
Unit Cell V:
651.39 ų (Calculated from Unit Cell)
Comment:
Hexagonal setting: a = 10.373(3), 20.746(6) Å (type material).

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
3.412 Å(m)
3.064 Å(vw)
2.998 Å(w)
2.902 Å(m)
2.846 Å(mw)
2.758 Å(vw)
2.624 Å(vw)
2.499 Å(mw)
2.431 Å(vw)
2.250 Å(w)
2.140 Å(w)
1.916 Å(mw)
1.805 Å(mw)
1.712 Å(vw)
1.603 Å(m)
1.548 Å(w)
1.511 Å(w)
1.441 Å(m)
Comments:
Intensity observed.

Type Occurrence of Dessauite-(Y)Hide

General Appearance of Type Material:
Small, flattened rhombohedral xls, tabular, with hexagonal outline. Dimensions: diameter up to 1 mm, thickness up to 0.2 mm.
Place of Conservation of Type Material:
Museo di Storia Naturale e del Territorio, University of Pisa, (catalog no. 16385).
Geological Setting of Type Material:
Calcite veins hosted within dolomitic marble ("Grezzoni" formation)

Synonyms of Dessauite-(Y)Hide

Other Language Names for Dessauite-(Y)Hide

Simplified Chinese:锶钇铁钛矿
Spanish:Dessauita
Traditional Chinese:鍶釔鐵鈦礦

Relationship of Dessauite-(Y) to other SpeciesHide

Other Members of this group:
AlmeidaitePbZn2(Mn,Y)(Ti,Fe3+)18O37(OH,O)Trig. 3 : R3
Cleusonite(Pb,Sr)(U4+,U6+)(Fe2+,Zn)2(Ti,Fe2+,Fe3+)18(O,OH)38Trig. 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.
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,◻)18O38Trig. 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

Related Minerals - Nickel-Strunz GroupingHide

4.CC.AllendeiteSc4Zr3O12Trig. 3 : R3
4.CC.Yttriaite-(Y)Y2O3Iso.
4.CC.Anzaite-(Ce)Ce3+ 4Fe2+Ti6O18 (OH)2Mon. 2/m : B2/m
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.40Cleusonite(Pb,Sr)(U4+,U6+)(Fe2+,Zn)2(Ti,Fe2+,Fe3+)18(O,OH)38Trig. 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.45HiboniteCaAl12O19Hex.
4.CC.45LindqvistitePb2Mn2+Fe16O27Hex.
4.CC.45Magnetoplumbite(Pb,Mn)(Fe,Mn)12O19Hex. 6/mmm (6/m 2/m 2/m) : P63/mmc
4.CC.45PlumboferritePb2(Fe3+,Mn2+,Mg)11O19Trig. 3 2 : P3 1 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)FeAl12O19Hex. 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 Dessauite-(Y)Hide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Orlandi P., Pasero M., Duchi G., Olmi F., 1997. Dessauite, (Sr, Pb) (Y, U) (Ti, Fe3+)20 O38, a new mineral of the crichtonite group from Buca della Vena mine, Tuscany, Italy. American Minereralogist: 82: 807-811.
Mineralogical Record: 29: 234-235.

Internet Links for Dessauite-(Y)Hide

Localities for Dessauite-(Y)Hide

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.
France
 
  • Auvergne-Rhône-Alpes
    • Isère
      • Les Deux Alpes
Jean-Claude Leydet specimen
    • Savoie
      • Lanslebourg
De Ascençao Guedes, R., Meisser, N., Janots, E., Grand'Homme, A., Parseval, P. et Schaub, L. (2013) - Thorite, dessauite-(Y), hingganite-(Y) et monazite-(Ce) au Mont-Cenis, Savoie. Le Règne Minéral n°112, pp 27-31, Editions du Piat.
India
 
  • Tamil Nadu
    • Chengalpattu district
Deepthi, K., Natesan, U., Muthulakshmi, A. L., Ferrer, V. A., Venugopalan, V. P., & Narasimhan, S. V. (2015). Mineralogical characterization in the marine environment of Kalpakkam, Southeast coast of India. Marine Georesources & Geotechnology, 33(6), 496-503.
Italy
 
  • Lombardy
    • Bergamo Province
      • Premolo
confirmed by EDS analisys http://www.mindat.org/photo-326538.html
    • Sondrio Province
      • Valtellina
        • Malenco Valley
          • Lanterna Valley
            • Lanzada
              • Mt. Motta
Bedognè, F. (2011). Microminerali della Valmalenco. Nuove segnalazioni e aggiornamenti. Rivista Mineralogica Italiana, 1/2011, 40-45
  • Piedmont
    • Verbano-Cusio-Ossola Province
      • Varzo
Cuchet, S., Crumbach, M., and van der Burgt, A. (2016) Le allaniti e i minerali di terre rare dell'Alpe Veglia (Varzo, Verbano-Cusio-Ossola). Rivista Mineralogica Italiana, 40, 4 (4-2016), 212-241.
  • Tuscany
    • Lucca Province
      • Stazzema
        • Ponte Stazzemese
Orlandi P., Pasero M., Duchi G., Olmi F., 1997. Dessauite, (Sr,Pb)(Y,U)(Ti,Fe3+)20 O38, a new mineral of the crichtonite group from Buca della Vena mine, Tuscany, Italy. Amer. Miner., 82: 807-811; Orlandi, P. & Pasero, M. (2006): Allanite-(La) from Buca della Vena mine, Apuan Alps, Italy, an epidote-group mineral. Canadian Mineralogist, 44, 63-68.
Switzerland
 
  • Ticino
    • Leventina
      • Central St Gotthard Massif
        • Fontana
Pavel M. Kartashov analytical data 2019, Roberto Bracco material
  • Valais
    • Anniviers Valley
      • Ayer
Ansermet, S. (2012): Mines et minéraux du Valais - II. Anniviers et Tourtemagne. With contributions by N. Meisser, Ed. Porte-plumes (Ayer)
    • Östlich Raron (East Raron)
      • Grengiols
        • Chummibort
Cuchet, S., Crumbach, M. and van der Burgt, A. (2014): Das Binntal enthüllt ein grosses Geheimnis. Schweizer Strahler 48 (2), 2-55 (in German and French)
 
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