Mineralogy Database

Uhligite Mineral Data

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General Uhligite Information

Help on Chemical  Formula: Chemical Formula: Ca3(Ti,Al,Zr)9O20
Help on Composition: Composition: Molecular Weight = 883.91 gm
   Calcium    13.60 %  Ca   19.03 % CaO
   Zirconium  15.48 %  Zr   20.91 % ZrO2
   Titanium   27.08 %  Ti   45.18 % TiO2
   Aluminum    7.63 %  Al   14.42 % Al2O3
   Oxygen     36.20 %  O
             ______        ______ 
             100.00 %       99.55 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca3Ti5Al2.5Zr1.5O20
Help on Environment: Environment: Nepheline-syenite rocks. Uhligite (1909) is now considered to be perovskite or zirkelite (?)
Help on IMA Status: IMA Status: Discredited IMA 2006
Help on Locality: Locality: Lake Magad, Rift Valley, Tanganyika Territory, Kenya, East Africa. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Alfred Louis Johannes Uhlig (1883-1919), German geologist, leader of the African expedition in which the material was first collected.
Help on Name Pronunciation: Name Pronunciation: Uhligite Say UHLIGITE
 

Uhligite Image

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  Uhligite

Comments: Black granular uhligite in syenite rock.
Location: near Lake Magadi, Rift Valley Province, Kenya. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Uhligite Crystallography

Help on Cell Dimensions: Cell Dimensions: a = 7.639, Z = 1; V = 445.77 Den(Calc)= 3.29
Help on Crystal System: Crystal System: Isometric Space Group: Unk
 

Physical Properties of Uhligite

Help on Cleavage: Cleavage: {001} Imperfect
Help on Color: Color: Black.
Help on Density: Density: 4.15
Help on Diaphaneity: Diaphaneity: Subtranslucent to opaque
Help on Fracture: Fracture: Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz).
Help on Habit: Habit: Octahedral Crystals - Occurs as octahedral shaped crystals.
Help on Habit: Habit: Striated - Parallel lines on crystal surface or cleavage face.
Help on Habit: Habit: Twinning Common - Crystals are usually twinned.
Help on Hardness: Hardness: 5.5 - Knife Blade
Help on Luster: Luster: Metallic
Help on Streak: Streak: brownish gray
 

Optical Properties of Uhligite

Help on Optical Data: Optical Data: NCalc= 1.96 - from Gladstone-Dale relationship (KC = 0.2915) where Ncalc=Dcalc*KC+1
NCalc= 2.21 - from Gladstone-Dale relationship (KC = 0.2915) where Ncalc=Dmeas*KC+1
 

Calculated Properties of Uhligite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.15 gm/cc
note: Specific Gravity of Uhligite =3.29 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.05
Boson Index = 0.95
Help on Photoelectric: Photoelectric: PEUhligite = 27.29 barns/electron
U=PEUhligite x rElectron Density= 85.83 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Uhligite is Not Radioactive
 

Uhligite Classification

Help on  Dana Class: Dana Class: 08.07.02.01 (08)Multiple Oxides with Nb, Ta, and Ti
  (08.07)Dana Type
  (08.07.02)Dana Group
 
08.07.02.01 Uhligite? Ca3(Ti,Al,Zr)9O20 Unk Cubic
Help on  Strunz Class: Strunz Class: 04.XX.00 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate
  04.X - Unclassified Strunz OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, telluri
  04.XX -Oxide
 
04.XX.00 Ashanite? (Nb,Ta,U,Fe,Mn)4O8 Pcan 2/m 2/m 2/m
 
04.XX.00 Methane hydrate-I! 46(H2O)•2(S)•6(L) P m3n 4/m 3 2/m
 
04.XX.00 Clinobirnessite* Na4Mn14O27•9(H2O) Mono
 
04.XX.00 Chubutite* Pb7O6Cl2 Unk Ortho
 
04.XX.00 Kleberite* FeTi6O13•4(H2O)(?) P 63mcm ? 6mm
 
04.XX.00 Hongquiite* TiO F m3m 4/m 3 2/m
 
04.XX.00 Psilomelane? (Ba,H2O)2Mn5O10 A2/m 2/m
 
04.XX.00 Struverite? (Ti,Ta,Fe)O2 P 4/mnm 4/m 2/m 2/m
 
04.XX.00 Ungursaite* NaCa5(Ta,Nb)24O65(OH) P 63/m,P 63 Hex
 
04.XX.00 Uhligite? Ca3(Ti,Al,Zr)9O20 Unk Cubic
 
04.XX.00 Scheteligite? (Ca,Y,Sb,Mn)2(Ti,Ta,Nb,W)2O6(O,OH) Unk Ortho
 
04.XX.00 Allendeite! Sc4Zr3O12 R 3 3
 
04.XX.00 IMA2000-016! (Ti,Fe,Mg,Mn)1-xTi2O5 Pban 2/m 2/m 2/m
 
04.XX.00 Methane hydrate-II! 136(H2O)•16(S)•8(L) F d3m 4/m 3 2/m
 
04.XX.00 IMA2000-026! (Mn,Li)4(Ta,Sn)4(Ta,Nb)8O32 C 2/c 2/m
 
04.XX.00 Methane hydrate-H! 34(H2O)•3(S)•2(M)•1(L) P 6/mmm 6/m 2/m 2/m
 

Other Uhligite Information

Help on References: References: NAME( Ford32) PHYS. PROP.(Dana8)
Help on See Also: See Also: Links to other databases for Uhligite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info

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Print or Cut-and-Paste your Uhligite Specimen Label here :

Uhligite

Ca3(Ti,Al,Zr)9O20
Dana No: 08.07.02.01 Strunz No: 04.XX.00
Locality:

 

Notes:

 

 
   
 


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