Baddeleyite Mineral Data

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.

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 - PrismaticH-M Symbol (2/m) Space Group: P 2₁/c

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 3.16(1), 2.826(0.8), 2.611(0.6),

Forms:

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Forms: [ 1 1 2] [ 0 1 1] [ 1 0 2] [ 1 0 0] [ 1 1 0] [ 0 0 1]

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Crystal Structure:

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McCullough J D , Trueblood K N , Acta Crystallographica , 12 (1959) p.507-511, The crystal structure of baddeleyite (monoclinic ZrO2)

View Additional jPOWD Structure files for Baddeleyite
[1]

Physical Properties of Baddeleyite

Cleavage:

[001] Distinct

Color:

Brown, Brownish black, Colorless, Green, Greenish brown.

Density:

5.5 - 6, Average = 5.75

Diaphaniety:

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

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:

r_electron=5.23 gm/cc
note: r_Baddeleyite=5.75 gm/cc.

Fermion Index

Fermion Index = 0.08318
Boson Index = 0.91682

Photoelectric:

PE_Baddeleyite= 104.65 barns/electron
U=PE_Baddeleyite x r_electron= 546.95 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Baddeleyite is Not Radioactive

Baddeleyite Classification

Dana Class:

4.4.14.1 (4)Simple Oxides

(4.4)with a cation charge of 4+ (A++++ O2)

(4.4.14)Dana Group

4.4.14.1 Baddeleyite ZrO2 P 2₁/c 2/m

Strunz Class:

IV/D.31-10 IV - Oxides

IV/D - Oxides with metal : oxygen = 1:2 (MO2 and related compounds)

IV/D.31 - Badleyite - Uraninite series

IV/D.31-10 Baddeleyite ZrO2 P 2₁/c 2/m

IV/D.31-20 Tazheranite CaTiZr2O8 F m3m 4/m 3 2/m

IV/D.31-30 Calzirtite CaZr3TiO9 P bca 2/m 2/m 2/m

IV/D.31-35 Hiarneite! (Ca,Mn,Na)2(Zr,Mn)5(Sb,Ti,Fe)2O16 I 4₁/acd 4/m 2/m 2/m

IV/D.31-40 Cerianite-(Ce) (Ce,Th)O2 F m3m 4/m 3 2/m

IV/D.31-50 Thorianite ThO2 F m3m 4/m 3 2/m

IV/D.31-60 Uraninite UO2 F m3m 4/m 3 2/m

Other Baddeleyite Information

References:

NAME( Ford32) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Ford32)

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

Baddeleyite

ZrO2
Dana No: 4.4.14.1 Strunz No: IV/D.31-10
Locality:

Notes: