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Dessauite-(Y)

Pictures (2 Images total)

Dessauit-(Y)
Views (File:
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Dessauit-(Y)
Bildbreite: 2 mm: Fundort: Trouée des Fées, Les Deux Alpes, Isère, Département, Rhône-Alpes, Region, Frankreich
Copyright: Stephan Wolfsried; Contribution: Hg
Location: Frankreich/Auvergne-Rhône-Alpes, Region/Isère, Département/Grenoble, Arrondissement/Les Deux Alpes/Trouée des Fées
Mineral: Dessauite-(Y)
Image: 1422447105
Rating: 8.5 (votes: 2)
License: Usage for Mineralienatlas project only
Dessauit-(Y)

Bildbreite: 2 mm: Fundort: Trouée des Fées, Les Deux Alpes, Isère, Département, Rhône-Alpes, Region, Frankreich
Copyright: Stephan Wolfsried
Contribution: Hg 2015-01-28
Locality: Trouée des Fées / Les Deux Alpes / Grenoble, Arrondissement / Isère, Département / Auvergne-Rhône-Alpes, Region / Frankreich
Dessauit-(Y) xx
Views (File:
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Dessauit-(Y) xx
schwarzer isometrischer Kristall von Dessauit-(Y) neben strohgelbem Rutilstern, von der Fibbia,St.Gotthard Gebiet/Tessin,Schweiz; Bildbreite 1,08 mm
Copyright: Haubi; Contribution: Haubi
Collection: Haubi
Location: Schweiz/Tessin, Kanton/Leventina, Bezirk/Airolo, Kreis/Airolo/Fontana/Fibbia
Mineral: Dessauite-(Y)
Image: 1669559430
License: Usage for Mineralienatlas project only
Dessauit-(Y) xx

schwarzer isometrischer Kristall von Dessauit-(Y) neben strohgelbem Rutilstern, von der Fibbia,St.Gotthard Gebiet/Tessin,Schweiz; Bildbreite 1,08 mm
Collection: Haubi
Copyright: Haubi
Contribution: Haubi 2022-11-27
Locality: Fibbia / Fontana / Airolo / Airolo, Kreis / Leventina, Bezirk / Tessin, Kanton / Schweiz

You find additional specimen at the Geolitho Museum

Collectors Summary

Cleavages nicht beobachtet
Fracture muschelig
Crystal System trigonal, R3

Chemism

Chemical formula

(Sr,Pb)(Y,U)Fe3+2(Ti,Fe3+)18O38

Chemical composition

Blei, Eisen, Strontium, Titan, Yttrium, Sauerstoff, Uran

Unit weight: 1860.88285725 u; Number of atoms in the formula: 60

Info

Empirical formula:

(Sr0.75Pb0.25)(Y0.75U0.25)Fe2(Ti0.75Fe0.25)18O38

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Oxygen

O

32.67

38

63.33

15.9994300

607.9783400
Titanium

Ti

34.73

13.5

22.50

47.8671000

646.2058500
Iron

Fe

19.51

6.5

10.83

55.8452000

362.9938000
Strontium

Sr

3.53

0.75

1.25

87.6210000

65.7157500
Yttrium

Y

3.58

0.75

1.25

88.9058520

66.6793890
Lead

Pb

2.78

0.25

0.42

207.2100000

51.8025000
Uranium

U

3.20

0.25

0.42

238.0289130

59.5072283

Analysis wt%

Ø V2O5 : 0.89, TiO2 : 55.71, Fe2O3 : 27.24, MnO : 0.56, ZnO : 0.42, UO2 : 4.52, Y2O3 : 2.02, La2O3 : 1.14, Ce2O3 : 0.68, SrO : 2.34, BaO : 0.83, PbO : 3.18, Ln2O3 : 3.84 (Ref: American Mineralogist 97)

Strunz 9th edition incl. updates

4.CC.40

4: Oxide, Hydroxide (Oxide, Hydroxide, V[5,6]-Vanadate, Arsenite, Antimonite, Bismutite, Sulfite, Selenite, Tellurite, Iodate)
C: Metall: Sauerstoff = 2: 3,3: 5, und vergleichbare
C: Mit großen und mittelgroßen Kationen
40:Crichtonit-Gruppe

Lapis Classification

IV/C.09-045

IV: OXIDE
C: Oxide mit Verhältnis Metall : Sauerstoff = 2:3 (M2O3 und verwandte Verbindungen)
9: Crichtonit-Gruppe

Classification by Hölzel

4.CE.340

4: OXIDES
C: R2O3 Sesquioxides
E: Other complex Oxides, mostly hextrig
3: Crichtonite-Group

Dana 8th edition

08.05.01.09

08: Multiple Oxides with Nb, Ta, and Ti
05: Multiple Oxides with Nb, Ta, and Ti
01: Crichtonite group (ABC18 T2 O38)

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

 Crichtonite Group

Crystallography

Crystal System

trigonal

Class (H-M)

3

Space Group number

148

Space Group

R3

Cell parameters a (Å)

10.385

Cell parameters b (Å)

-

Cell parameters c (Å)

20.921

Cell parameters a/b or c/a

2.015

Cell parameters c/b

-

Z

3

Volume (ų)

1954.007

X-Ray Powder Diffraction

3.412(100),
2.902(100),
2.846(50),
2.499(50),
1.916(50),
1.805(50),
1.603(100),
1.441(100)
XRD chart Dessauite-(Y)

Calculated from d-spacing and intensity at 0.1541838 nm (Cu)

Crystals 3D

Open larger view

Crystal Structure 3D

Open larger view

Physical Properties

VHN (Hardness Vickers)

1444 (100g)!

Density (g/cm³)

4.68 (berechnet)

4.744 ( ρ calc. Mineralienatlas )

Cleavages

nicht beobachtet

Fracture

muschelig

Tenacity

spröde

(Co-)Type locality

(Co-)Type locality

Italien/Toskana (Toscana)/Massa-Carrara, Provinz/Stazzema/Buca della Vena

Preface

Name from

Gabor Dessau (1907-1983), italienischer Mineraloge

Author (Name, Year)

Orlandi & Pasero & Duchi & Olmi, 1997

References

American Mineralogist 82 (1997), 807.

Minerals and Museums 5 (2004).

IMA group assignments

 
Crichtonite Group
 
 
 

 
 
Almeidaite
PbZn2(Mn,Y)(Ti,Fe3+)18O36(OH,O)2
trigonal
R3

 
 
Antipinite
KNa3Cu2(C2O4)4
triklin
P1

 
 
Botuobinskite
SrFe2+(Ti4+12Cr3+6)Mg2[O36(OH)2]
trigonal
R3

 
 
Cleusonite
(Pb,Sr)(U4+,U6+)(Fe2+,Zn)2(Ti,Fe2+,Fe3+)18(O,OH)38
trigonal
R3

 
 
Crichtonite
(Sr,Pb)(Mn,Fe)Fe3+2(Ti,Fe3+)18O38
trigonal
R3

 
 
Davidite-(Ce)
(Ce,La,U,Y)2Fe3+2(Ti,Fe3+)18O38
trigonal
R3

 
 
Davidite-(La)
La(Y,U)Fe2(Ti,Fe,Cr,V)18(O,OH,F)38
trigonal
R3

 
 
Dessauite-(Y)
(Sr,Pb)(Y,U)Fe3+2(Ti,Fe3+)18O38
trigonal
R3

 
 
Gramaccioliite-(Y)
(Pb,Sr)(Y,Mn)(Fe3+)2(Ti,Fe3+)18O38
trigonal
R3

 
 
Landauite
(Na,Pb)(Mn2+,Y)(Zn,Fe)2(Ti,Fe3+,Nb)18(O,OH,F)O38
trigonal
R3

 
 
Lindsleyite
(BaSr)Zr(Fe3+,Mg)2(Ti,Cr,Fe3+)18O38
trigonal
R3

 
 
Loveringite
(Ca,Ce)(Zr,Mg)(Ti,Fe3+)2(Ti,Cr,Fe3+)18O38
trigonal
R3

 
 
Mapiquiroite
(Sr,Pb)(U,Y)Fe2(Ti,Fe3+,Cr3+)18O38
trigonal
R3

 
 
Mathiasite
K(Zr,Ca)(Fe3+,Mg)2(Ti,Cr,Fe3+)18O38
trigonal
R3

 
 
Mianningite
(☐,Pb,Ce,Na)(U4+,Mn,U6+)Fe3+2(Ti,Fe3+)18O38
trigonal
R3

 
 
Mirnyite
SrZr4+(Ti4+12Cr3+6)Mg2O38
trigonal
R3

 
 
Paseroite
PbMn2+(Mn2+,Fe2+)2(V5+,Ti,Fe3+,☐)18O38
triklin
R3

 
 
Romanite ?
(Fe2+,U,Pb)2(Ti,Fe3+)O4
 
 

 
 
Saranovskite
SrCaFe2+2(Cr4Ti2)Ti12O38
trigonal
R3

 
 
Senaite
Pb(Mn,Y,U)(Fe,Zn)2(Ti,Fe,Cr,V)18(O,OH)38
trigonal
R3

 
 
Unnamed (HBU UK-4)
NaFe2+Zn2(Ti,Fe3+,Nb)6Ti12O38
trigonal
R3

Refresh list

Actuality: 03. Dec 2024 - 06:14:17

Other languages

German

Dessauit-(Y)

English

Dessauite-(Y)

French

Dessauite-(Y)

Spanish

Dessauíta-(Y)

Russian

Дессауит-(Y)

Traditional Chinese

鍶釔鐵鈦礦

Simplified Chinese

锶钇铁钛矿

Japanese

ｲｯﾄﾛﾃﾞｽｻｳ鉱

Japanese

ﾃﾞｽｻｳ鉱

old name

Italian

Mohsite (nach Colomba)

L. Colomba: Sulla mohsite della Beaume (Alta valle della Dara Riparia). Atti della Reale Accademia delle scienze di Torino, Vol. 37 (1902) S. 491–500.

P. R. Kelly, I. H. Campbell, I. E. Grey, B. M. Gatehouse: Additional data on loveringite (Ca, REE)(Ti, Fe, Cr)21O38 and mohsite discredited. Canadian Mineralogist Vol. 17 (1979) S. 635–638.

E. Costa, L. M. Gallo: The history of the discredited mohsite. Plinius Vol. 37 (2011) S. 303.

Erica Bittarello, E. Marco Ciriotti, Emanuele Costa, Lorenzo Mariano Gallo: “Mohsite” of Colomba: Identification as Dessauite-(Y). International Journal of Mineralogy (2014) Article ID 287069, 6 Seiten (Open access) DOI: 10.1155/2014/287069

Italian

Mohsite (nach Lévy)

A. Lévy: On a new mineral species. Philosophical Magazine Vol. 1, Series 2 (1827) S. 221–223.

A. Lacroix, Minéralogie de la France et de ses colonies. Tome III Premier fascicule, Librarie Polytechnique, Paris, France, 1901.

P. R. Kelly, I. H. Campbell, I. E. Grey, B. M. Gatehouse: Additional data on loveringite (Ca, REE)(Ti, Fe, Cr)21O38 and mohsite discredited. Canadian Mineralogist Vol. 17 (1979) S. 635–638.

E. Costa, L. M. Gallo: The history of the discredited mohsite. Plinius Vol. 37 (2011) S. 303.

Erica Bittarello, E. Marco Ciriotti, Emanuele Costa, Lorenzo Mariano Gallo: “Mohsite” of Colomba: Identification as Dessauite-(Y). International Journal of Mineralogy (2014) Article ID 287069, 6 Seiten (Open access) DOI: 10.1155/2014/287069

Alternative Name

German

Dessauit

Spanish

Dessauita

Dessauite

CNMNC (IMA)-Number

IMA 1994-057

CNMNC symbol

Symbol

Dss-Y

Locations with GPS information

IDs

GUSID (Global unique identifier short form) TChwFbecM0qZxMFiKf45ww
GUID (Global unique identifier) 1570284C-9CB7-4A33-99C4-C16229FE39C3
Database ID 922