Avicennite Mineral Data (original) (raw)

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.

Name Pronunciation:

Avicennite + Pronunciation

Synonym:

ICSD 26813

PDF 33-1404

Avicennite Image

Images:

	Avicennite Comments: Grayish black polished crystals on microprobe sample mount. Location: Thallium Prospect, Little Valley, Tooele County, Utah, USA.Scale: See Image. © Rruff Database

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

X Ray Diffraction:

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

Crystal Structure:

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| | 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

Diaphaneity:

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

Calculated Properties of Avicennite

Electron Density:

Bulk Density (Electron Density)=7.56 gm/cc
note: Specific Gravity of Avicennite =9.36 gm/cc.

Fermion Index:

Fermion Index = 0.0000348472
Boson Index = 0.9999651528

Photoelectric:

PEAvicennite =1,688.85 barns/electron
U=PEAvicennite x rElectron Density=12767.61 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Avicennite is Not Radioactive

Avicennite Classification

Dana Class:

04.03.08.01 (04)Simple Oxides

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

(04.03.08)Dana Group

04.03.08.01 Avicennite Tl2O3 I a3 2/m 3

Strunz Class:

04.CB.10 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate

04.C - Metal:Oxygen = 2:3, 3:5, and Similar

04.CB -With medium-sized cations

04.CB.10 Bixbyite (Mn,Fe)2O3 I a3 2/m 3

04.CB.10 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 - 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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Ask about Avicennite here :
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Print or Cut-and-Paste your Avicennite Specimen Label here :

Avicennite

Tl2O3
Dana No: 04.03.08.01 Strunz No: 04.CB.10
Locality:

Notes: