Tellurite Mineral Data

Tellurite Mineral Data +

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General Tellurite Information

Chemical Formula:

TeO2

Composition:

Molecular Weight = 159.60 gm

Tellurium 79.95 % Te 100.00 % TeO₂

Oxygen 20.05 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

TeO₂

Environment:

Of secondary origin resulting from the oxidation of other tellurium compounds.

IMA Status:

Valid Species (Pre-IMA) 1849

Locality:

Nagy-Ag, Rumania. Link to MinDat.org Location Data.

Name Origin:

Named after its containing tellurium (Latin, tellus = "earth").

Synonym:

ICSD 26844

PDF 9-433

Tellurite Image

Images:

Tellurite Denningite

Comments: Vitreous colorless to very pale yellowish elongated crystals denningite with yellow tellurite.
Location: Bambolla Mine, Moctezuma, Mun. de Moctezuma, Sonora, Mexico. Scale: Picture size 5 mm.
© Thomas Witzke / Abraxas-Verlag

Images:

Tellurite

Comments: Scaly yellow tellurite on white quartz.
Location: Mina Bambollita, Moctezuma, Sonora, Mexico. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Tellurite Crystallography

Axial Ratios:

a:b:c =0.4659:1:0.4539

Cell Dimensions:

a = 5.607, b = 12.034, c = 5.463, Z = 8; V = 368.61 Den(Calc)= 5.75

Crystal System:

Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: P bca

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

By Intensity(I/I_o): 3.28(1), 3.723(0.95), 3.008(0.5),

Forms:

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

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Crystal Structure:

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Beyer H , Zeitschrift fur Kristallographie , 124 (1967) p.228-237, Verfeinerung der kristallstruktur von tellurit, dem rhomischen TeO2, Locality: Moctezuma, Mexico

Physical Properties of Tellurite

Cleavage:

[010] Perfect

Color:

Yellow orange, White, Straw yellow.

Density:

5.9

Diaphaniety:

Subtranslucent to opaque

Fracture:

Flexible - Flexible fragments.

Habit:

Acicular - Occurs as needle-like crystals.

Habit:

Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).

Hardness:

2 - Gypsum

Luminescence:

Non-fluorescent.

Luster:

Adamantine

Magnetism:

Nonmagnetic

Streak:

white

Optical Properties of Tellurite

Gladstone-Dale:

CI meas= 0.008 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= -0.018 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2046,KPDmeas= 0.1994,KC= 0.201

Optical Data:

Biaxial (-), a=2, b=2.18, g=2.35, bire=0.3500

Calculated Properties of Tellurite

Electron Density:

r_electron=5.03 gm/cc
note: r_Tellurite=5.90 gm/cc.

Fermion Index

Fermion Index = 0.06397
Boson Index = 0.93603

Photoelectric:

PE_Tellurite= 287.88 barns/electron
U=PE_Tellurite x r_electron=1,447.32 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Tellurite is Not Radioactive

Tellurite Classification

Dana Class:

4.4.6.1 (4)Simple Oxides

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

(4.4.6)Dana Group

4.4.6.1 Tellurite TeO2 P bca 2/m 2/m 2/m

4.4.6.2 Scrutinyite PbO2 P bcn 2/m 2/m 2/m

Strunz Class:

IV/D.15-30 IV - Oxides

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

IV/D.15 - Brookite - Kuranakhite series

IV/D.15-10 Brookite TiO2 Pcab 2/m 2/m 2/m

IV/D.15-20 Srilankite (Ti,Zr)O2 P bcn 2/m 2/m 2/m

IV/D.15-25 Carmichaelite! (Ti,Cr,Fe)[O2-x(OH)x],x~0.5 P 2₁/c 2/m

IV/D.15-30 Tellurite TeO2 P bca 2/m 2/m 2/m

IV/D.15-40 Scrutinyite PbO2 P bcn 2/m 2/m 2/m

IV/D.15-50 Kuranakhite PbMnTeO6 Unk Ortho

Other Tellurite Information

References:

NAME( Emsley91) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Ford32)

See Also:

Links to other databases for Tellurite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (UofA) 7 -MinDAT 8 -MinMax(Deutsch) 9 -MinMax(English) 10 -Mineralienatlas (Deutsch) 11 -QUT Mineral Atlas 12 - WWW-MINCRYST 13 -École des Mines de Paris

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Tellurite

TeO2
Dana No: 4.4.6.1 Strunz No: IV/D.15-30
Locality:

Notes: