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Uhligite

Formula:
Ca
 
3
(Ti,Al,Zr)
 
9
O
 
20
 ?
System:IsometricColour:Black
Lustre:MetallicHardness:5½
Name:Named after Alfred Louis Johannes Uhlig (1883-1919), German geologist, leader of the expedition on which the material was collected.


Possibly impure perovskite.
Originally described from Lake Magadi, South Rift Valley, Rift Valley Province, Kenya.

Classification of Uhligite

IMA status:Questionable/Doubtful
Strunz 8th edition ID:4/C.10-10

4 : Oxides & Hydroxides
C : Oxides with metal : oxygen = 2:3 (M2O3 and related compounds)
10 : Perowskite series
Dana 8th edition ID:8.7.2.1

8 : MULTIPLE OXIDES CONTAINING NIOBIUM,TANTALUM OR TITANIUM
7 : Miscellaneous
Hey's CIM Ref.:7.10.9

7 : Oxides and Hydroxides
10 : Oxides of Zr and Th
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Physical Properties of Uhligite

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

Crystallography of Uhligite

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

Optical Data of Uhligite

Type:Isotropic

Chemical Properties of Uhligite

Formula:
Ca
 
3
(Ti,Al,Zr)
 
9
O
 
20
 ?
Essential elements:Ca, O, Ti
All elements listed in formula:Al, Ca, O, Ti, Zr

Relationship of Uhligite to other Species

Related Minerals - Strunz Grouping):
4/C.10-20Perovskite
CaTiO
 
3
4/C.10-25IMA2007-014
CaZrO
 
3
4/C.10-30Latrappite
(Ca,Na)(Nb,Ti,Fe)O
 
3
4/C.10-40Tausonite
SrTiO
 
3
4/C.10-50Loparite-(Ce)
(Na,Ce,Ca,Sr,Th)(Ti,Nb,Fe)O
 
3
4/C.10-55Isolueshite
(Na,La,Ca)(Nb,Ti)O
 
3
4/C.10-60Lueshite
NaNbO
 
3
4/C.10-70Natroniobite
NaNbO
 
3
4/C.10-80Macedonite
PbTiO
 
3
Related Minerals - Hey's Index Grouping:
7.10.1Baddeleyite
ZrO
 
2
7.10.2Arkelite
ZrO
 
2
7.10.3Painite
ZrCaAl
 
9
[O
 
15
|BO
 
3
]
7.10.4Srilankite
Ti
 
2
ZrO
 
6
7.10.5Zirconolite
CaZrTi
 
2
O
 
7
7.10.6Calzirtite
CaZr
 
3
TiO
 
9
7.10.7Tazheranite
(Zr,Ti,Ca)O
 
2
7.10.8Zirkelite
(Ti,Ca,Zr)O
 
2-x
7.10.10Thorianite
ThO
 
2

Other Names for Uhligite

German names:
Uhligit
Spanish names:
Uhligita

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 Uhligite

Reference List: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.

Internet Links for Uhligite

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    Localities for Uhligite

    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    Kenya
     
    • Rift Valley Province
      • South Rift Valley
    		No reference listed
    Mineral and/or Locality
    Google
     
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