Tivanite Mineral Data

Tivanite Mineral Data +

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General Tivanite Information

Chemical Formula:

V+++TiO3(OH)

Composition:

Molecular Weight = 163.83 gm

Titanium 29.23 % Ti 48.76 % TiO₂

Vanadium 31.09 % V 45.74 % V₂O₃

Hydrogen 0.62 % H 5.50 % H₂O

Oxygen 39.06 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

V³⁺TiO₃(OH)

Environment:

As a grain in micaceous V-Au-rich stringers in a hydrothermal gold deposit.

IMA Status:

Approved IMA 1981

Locality:

Lake View mine, Kalgoorlie, Western Australia, Australia. Link to MinDat.org Location Data.

Name Origin:

Named for the TItanium and VANadium in the composition.

Synonym:

ICSD 100875

PDF 35-494

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Tivanite Crystallography

Axial Ratios:

a:b:c =1.6463:1:2.1979

Cell Dimensions:

a = 7.494, b = 4.552, c = 10.005, Z = 4; beta = 129.79° V = 262.25 Den(Calc)= 4.15

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): 3.88(1), 2.795(0.94), 2.636(0.69),

Crystal Structure:

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Grey I E , Nickel E H , American Mineralogist , 66 (1981) p.866-871, Tivanite, a new oxyhydroxide mineral from Western Australia, and its structural, relationship to rutile and diaspore

Physical Properties of Tivanite

Color:

Black.

Density:

4.17

Diaphaniety:

Opaque

Hardness:

5.5 - Knife Blade

Luster:

Sub Metallic

Streak:

black

Optical Properties of Tivanite

Optical Data:

Biaxial (?)

NCalc= 2.4 - from Gladstone-Dale relationship (KC = 0.3379) where Ncalc=Dcalc*KC+1
NCalc= 2.41 - from Gladstone-Dale relationship (KC = 0.3379) where Ncalc=Dmeas*KC+1

RL Anisotrophism:

Weak to moderate, in shades of gray.

RL Color:

Gray.

Reflectivity

**Standardized Intensity (100%) Reflection Spectra of Tivanite in Air**
λ	R	∑ R(λ)
470 nm	16.80
546 nm	17.40
589 nm	17.70

**Calculated Relative Intensity Colors of Tivanite in Air**
Relative Intensity	0%	60%	100%	120%	180%	240%	300%	360%	420%	480%	530%
R

Calculated Properties of Tivanite

Electron Density:

r_electron=3.95 gm/cc
note: r_Tivanite=4.15 gm/cc.

Fermion Index

Fermion Index = 0.03875
Boson Index = 0.96125

Photoelectric:

PE_Tivanite= 10.87 barns/electron
U=PE_Tivanite x r_electron= 42.94 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Tivanite is Not Radioactive

Tivanite Classification

Dana Class:

6.2.8.1 (6)Hydroxides and Oxides Containing Hydroxyl

(6.2)where X++ (OH)2

(6.2.8)Dana Group

6.2.8.1 Tivanite VTiO3(OH) P 2₁/c 2/m

Strunz Class:

IV/F.08-10 IV - Oxides

IV/F - Hydroxides and oxidic hydrates, water-bearing oxides with layered structure

IV/F.08 - Tivanite - Paramontroseite series (V3+ oxides)

IV/F.08-10 Tivanite VTiO3(OH) P 2₁/c 2/m

IV/F.08-20 Montroseite (V,Fe,V)O(OH) Pbnm 2/m 2/m 2/m

IV/F.08-30 Paramontroseite VO2 Pbnm 2/m 2/m 2/m

Other Tivanite Information

References:

NAME( AntBidBlaNic3) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic3)

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

Tivanite

V+++TiO3(OH)
Dana No: 6.2.8.1 Strunz No: IV/F.08-10
Locality:

Notes: