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Uhligite

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Formula:
Ca3(Ti,Al,Zr)9O20 ?
System:
Isometric
Colour:
Black
Lustre:
Metallic
Hardness:
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

Questionable/Doubtful
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
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Physical Properties of Uhligite

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

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:
Ca3(Ti,Al,Zr)9O20 ?
Essential elements:
All elements listed in formula:

Relationship of Uhligite to other Species

4/C.10-20PerovskiteCaTiO3
4/C.10-30Latrappite(Ca,Na)(Nb,Ti,Fe)O3
4/C.10-40TausoniteSrTiO3
4/C.10-50Loparite-(Ce)(Na,Ce,Ca,Sr,Th)(Ti,Nb,Fe)O3
4/C.10-55Isolueshite(Na,La,Ca)(Nb,Ti)O3
4/C.10-60LueshiteNaNbO3
4/C.10-70NatroniobiteNaNbO3
4/C.10-80MacedonitePbTiO3
7.10.1BaddeleyiteZrO2
7.10.2ArkeliteZrO2
7.10.3PainiteCaZrAl9(BO3)O15
7.10.4SrilankiteZrTi2O6
7.10.5ZirconoliteCaZrTi2O7
7.10.6CalzirtiteCaZr3TiO9
7.10.7Tazheranite(Zr,Ti,Ca)O2-x
7.10.8Zirkelite(Ti,Ca,Zr)O2-x
7.10.10ThorianiteThO2

Other Names for Uhligite

Name in Other Languages:
German:Uhligit
Spanish:Uhligita

Other Information

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 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

Localities for Uhligite

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.
(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? 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
New data on minerals. M.: 2003. Volume 38 pp113
Mineral and/or Locality  
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