Avicennite Mineral Data

Avicennite Mineral Data +

[On-Line Catalogue] [On-Line Auctions] [eBay] [Contact Us] [Policies]
We specialize in fine European and Asian Mineral Specimens
Heliodor is based in Prague, Czech Republic

General Avicennite Information

Chemical Formula:

Tl2O3

Composition:

Molecular Weight = 661.15 gm

Thallium 92.74 % Tl 103.63 % Tl₂O₃

Oxygen 7.26 % O

______ ______

100.00 % 103.63 % = TOTAL OXIDE

Empirical Formula:

Tl₃O₃

Environment:

In the weathered zone of a hematite-calcite vein cutting banded marmorized and silicified limestones near a granite-gneiss contact (near Dzhuzumli, Tadzhikistan).

IMA Status:

Valid Species (Pre-IMA) 1958

Locality:

From near the village of Dzhuzumli, Mt. Zirabulaksk region, Bukhara, Tadzhikistan. Link to MinDat.org Location Data.

Name Origin:

For the medieval (Persian) scholar and physician, Abu 'Ali al-Husayn ibn 'Abd Allah ibn Sina (Avicenna) (930-1037), who lived in Bukhara, Tadzhikistan.

Synonym:

ICSD 26813

PDF 33-1404

Search for Avicennite Images

Images:

Image not yet available on Webmineral.com

Try searching images.google.com or Mindat Picture Gallary for mineral pictures. Caution: The images retrieved may not be appropriate.

Avicennite Crystallography

Cell Dimensions:

a = 10.5468, Z = 10; V = 1,173.17 Den(Calc)= 9.36

Crystal System:

Isometric - DiploidalH-M Symbol (2/m 3) Space Group: I a3

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

By Intensity(I/I_o): 3.044(1), 1.864(0.38), 2.637(0.37),

Crystal Structure:

Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
Keyboard
S - Stereo Pair on/off
H - Help Screen
I - Data Info
A - Atoms On/Off
P - Polyhedra On/Off
B - Bonds On/Off
Help on Above

Otto H H , Baltrusch R , Brant H J , Physica C , 215 (1993) p.205-208, Further evidence for Tl3+ in Tl-based superconductors from improved, bond strength parameters involving new structural data of cubic Tl2O3

Physical Properties of Avicennite

Cleavage:

None

Color:

Grayish black.

Density:

9.574

Diaphaniety:

Opaque

Fracture:

Brittle - Conchoidal - Very brittle fracture producing small, conchoidal fragments.

Hardness:

2 - Gypsum

Luster:

Metallic

Streak:

grayish black

Optical Properties of Avicennite

Optical Data:

Isotropic.

NCalc= 1.51 - from Gladstone-Dale relationship (KC = 0.0549) where Ncalc=Dcalc*KC+1
NCalc= 1.53 - from Gladstone-Dale relationship (KC = 0.0549) where Ncalc=Dmeas*KC+1

RL Color:

Pale to medium gray.

Reflectivity

**Standardized Intensity (100%) Reflection Spectra of Avicennite in Air**
λ	R	∑ R(λ)
400 nm	11.50
470 nm	12.50
500 nm	13.00
546 nm	12.70
589 nm	12.30
650 nm	10.60
700 nm	11.50

**Calculated Relative Intensity Colors of Avicennite in Air**
Relative Intensity	0%	80%	100%	160%	240%	320%	400%	480%	560%	640%	720%	760%
R

Calculated Properties of Avicennite

Electron Density:

r_electron=7.56 gm/cc
note: r_Avicennite=9.36 gm/cc.

Fermion Index

Fermion Index = 0.00003
Boson Index = 0.99997

Photoelectric:

PE_Avicennite=1,688.85 barns/electron
U=PE_Avicennite x r_electron=12767.61 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Avicennite is Not Radioactive

Avicennite Classification

Dana Class:

4.3.8.1 (4)Simple Oxides

(4.3)with a cation charge of 3+ (A+++2 O3)

(4.3.8)Dana Group

4.3.8.1 Avicennite Tl2O3 I a3 2/m 3

Strunz Class:

IV/C.03-20 IV - Oxides

IV/C - Oxides with metal : oxygen = 2:3 (M2O3 and related compounds)

IV/C.03 - Bixbyite - Avicennite series

IV/C.03-10 Bixbyite (Mn,Fe)2O3 I a3 2/m 3

IV/C.03-20 Avicennite Tl2O3 I a3 2/m 3

Other Avicennite Information

References:

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

See Also:

Links to other databases for Avicennite :
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

Search for Avicennite using:

[ALTAVISTA] [AOL] [All-The-Web] [HotBot] [Ixquick] [MAMMA] [MSN.COM] [Netscape] [Scirus] [Teoma] [Wikipedia] [YAHOO]

Visit our Advertisers for Avicennite :

AA Mineral Specimens

B & L Fine Minerals

Crystal Vaults

Dan Weinrich Fine Minerals

Dan Weinrich Auctions

John Betts Fine Minerals

Mason's Minerals

Mineral News

Mineral of the Month Club

MineralsWeb Fine Minerals

Rockshop.cz

T G Fine Minerals

Wrights Rock Shop

Translate Avicennite Mineral Data :

Ask about Avicennite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Español

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

Avicennite

Tl2O3
Dana No: 4.3.8.1 Strunz No: IV/C.03-20
Locality:

Notes: