Baddeleyite Mineral Data
General Baddeleyite Information
Chemical Formula:
ZrO2
Composition:
Molecular Weight = 123.22 gm
Zirconium 74.03 % Zr 100.00 % ZrO2
Oxygen 25.97 % O
______ ______
100.00 % 100.00 % = TOTAL OXIDE
Empirical Formula:
ZrO2
Environment:
Gem gravels and high temperature veins.
IMA Status:
Valid Species (Pre-IMA) 1892
Locality:
Caldas, Minas Gerais and Jacupiranga, Sao Paulo, Brazil. Link to MinDat.org Location Data.
Name Origin:
For Joseph Baddeley, who first called attention to the Sri Lankan material.
Name Pronunciation:
Baddeleyite + Pronunciation
Synonym:
ICSD 18190
PDF 37-1484
Baddeleyite Image
Images:
Baddeleyite
Comments: Single crystal specimen of very rare baddeleyite pseudomorphing kimzeyite (garnet).
Location: Perovskite Hill, Magnet Cove, Arkansas, USA.
Scale: 0.9 X 1.0 cm.
© John Veevaert
Baddeleyite Crystallography
Axial Ratios:
a:b:c =0.9893:1:1.0216
Cell Dimensions:
a = 5.1477, b = 5.203, c = 5.3156, Z = 4; beta = 99.38° V = 140.47 Den(Calc)= 5.83
Crystal System:
Monoclinic - Prismatic H-M Symbol (2/m) Space Group: P 21 /c
X Ray Diffraction:
By Intensity(I/Io ): 3.16(1), 2.826(0.8), 2.611(0.6),
Forms:
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Forms:
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Physical Properties of Baddeleyite
Cleavage:
{001} Distinct
Color:
Brown, Brownish black, Colorless, Green, Greenish brown.
Density:
5.5 - 6, Average = 5.75
Diaphaneity:
Transparent to translucent
Fracture:
Brittle - Conchoidal - Very brittle fracture producing small, conchoidal fragments.
Habit:
Crystalline - Coarse - Occurs as well-formed coarse sized crystals.
Habit:
Tabular - Form dimensions are thin in one direction.
Hardness:
6.5 - Pyrite
Luster:
Adamantine
Streak:
white
Optical Properties of Baddeleyite
Gladstone-Dale:
CI meas = 0.033 (Excellent) - where the CI = (1-KPDmeas /KC ) CI calc = 0.046 (Good) - where the CI = (1-KPDcalc /KC )
KPDcalc = 0.2013,KPDmeas = 0.2041,KC = 0.211 Ncalc = 2.16 - 2.27
Optical Data:
Biaxial (-), a=2.13, b=2.19, g=2.2, bire=0.0700, 2V(Calc)=42, 2V(Meas)=30. Dispersion strong, r > v.
Calculated Properties of Baddeleyite
Electron Density:
Bulk Density (Electron Density)=5.23 gm/cc note: Specific Gravity of Baddeleyite =5.75 gm/cc.
Fermion Index:
Fermion Index = 0.08 Boson Index = 0.92
Photoelectric:
PEBaddeleyite = 104.65 barns/electronU=PEBaddeleyite x r Electron Density= 546.95 barns/cc.
Radioactivity:
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Baddeleyite is Not Radioactive
Baddeleyite Classification
Dana Class:
04.04.14.01 (04) Simple Oxides
(04.04) with a cation charge of 4+ (A++++ O2)
(04.04.14) Dana Group
04.04.14.01 Baddeleyite ZrO2 P 21 /c 2/m
04.04.14.02 IMA2007-058 ! TiO2 P 21 /c 2/m
Strunz Class:
04.DE.35 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate
04.D - Metal:Oxygen = 1:2 and similar
04.DE -With medium-sized cations; with various polyhedra
04.DE.35 Baddeleyite ZrO2 P 21 /c 2/m
04.DE.35 IMA2007-058 ! TiO2 P 21 /c 2/m
Other Baddeleyite Information
References:
NAME( Ford32) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Ford32)
See Also:
Links to other databases for Baddeleyite :
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
15 - WWW-MINCRYST
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Baddeleyite
ZrO2
Dana No: 04.04.14.01 Strunz No: 04.DE.35
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