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Uhligite

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Formula:
Ca3(Ti,Al,Zr)9O20 ?
Colour:
Black
Lustre:
Metallic
Hardness:
Specific Gravity:
4.14 - 4.16
Crystal System:
Isometric
Name:
Named after Alfred Louis Johannes Uhlig (1883-1919), German geologist, leader of the expedition on which the material was collected.
Possibly impure perovskite or zirkelite.
Originally described from Lake Magadi, South Rift Valley, Rift Valley Province, Kenya.


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Classification of UhligiteHide

Discredited
Approval History:
Discredited by IMA in 2006 (IMA 06–C), cf. Burke 2006.
4/C.10-10

4 : Oxides & Hydroxides
C : Oxides with metal : oxygen = 2:3 (M2O3 and related compounds)
10 : Perowskite series
8.7.2.1

8 : MULTIPLE OXIDES CONTAINING NIOBIUM,TANTALUM OR TITANIUM
7 : Miscellaneous
7.10.9

7 : Oxides and Hydroxides
10 : Oxides of Zr and Th

Physical Properties of UhligiteHide

Metallic
Transparency:
Opaque
Colour:
Black
Streak:
Brownish grey
Hardness:
5½ on Mohs scale
Cleavage:
Imperfect/Fair
On {001}.
Fracture:
Conchoidal
Density:
4.14 - 4.16 g/cm3 (Measured)    

Optical Data of UhligiteHide

Type:
Isotropic

Chemical Properties of UhligiteHide

Formula:
Ca3(Ti,Al,Zr)9O20 ?

Crystallography of UhligiteHide

Crystal System:
Isometric
Cell Parameters:
a = 7.639 Å
Unit Cell V:
445.77 ų (Calculated from Unit Cell)
Morphology:
Crystals octahedral with modifying {001}. {111} striated parallel [011].
Twinning:
On {111}.

Other Language Names for UhligiteHide

German:Uhligit
Spanish:Uhligita

Related Minerals - Nickel-Strunz Grouping (8th Edition)Hide

4/C.10-20PerovskiteCaTiO3Orth. mmm (2/m 2/m 2/m) : Pnma
4/C.10-30LatrappiteCa2NbFe3+O6Orth. mmm (2/m 2/m 2/m) : Pnma
4/C.10-40TausoniteSrTiO3Iso. 4 3m
4/C.10-50Loparite-(Ce)(Na,REE)Ti2O6
4/C.10-55Isolueshite(Na,La)NbO3Iso. m3m (4/m 3 2/m) : Pm3m
4/C.10-60LueshiteNaNbO3Orth. mmm (2/m 2/m 2/m)
4/C.10-70NatroniobiteNaNbO3Mon.
4/C.10-80MacedonitePbTiO3Tet. 4/mmm (4/m 2/m 2/m) : P4/nmm

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

7.10.1BaddeleyiteZrO2Mon. 2/m : P21/b
7.10.2ArkeliteIso.
7.10.3PainiteCaZrAl9(BO3)O15Hex.
7.10.4SrilankiteZrTi2O6Orth. mmm (2/m 2/m 2/m) : Pbcn
7.10.5ZirconoliteCaZrTi2O7Orth.
7.10.6CalzirtiteCaZr3TiO9Tet.
7.10.7Tazheranite(Zr,Ti,Ca)O2-xIso.
7.10.8Zirkelite(Ti,Ca,Zr)O2-xIso.
7.10.10ThorianiteThO2Iso. m3m (4/m 3 2/m)

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 UhligiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Hauser (1909), Zs. anorg. Chem.: 63: 340.
Zedlitz (1939), Neues Jahrbuch für Mineralogie, Monatshefte: 75: 245.
Neues Jahrbuch für Mineralogie, Geologie und Paläntologie: 75(2): 245-296.
Palache, Charles, Harry Berman & Clifford Frondel (1944), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana Yale University 1837-1892, Volume I: Elements, Sulfides, Sulfosalts, Oxides. John Wiley and Sons, Inc., New York. 7th edition, revised and enlarged: 735-736.
Clark, A.M. (1993) Hey's mineral index, 3rd. ed.: 721.
Burke, E.A.J. (2006) A mass discreditation of GQN minerals. The Canadian Mineralogist: 44(6): 1557-1560.

Internet Links for UhligiteHide

Localities for UhligiteHide

ⓘ - 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.
Kenya
 
  • Kajiado County
New data on minerals. M.: 2003. Volume 38 pp113.
Mineral and/or Locality  
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