Jankovicite Mineral Data (original) (raw)

General Jankovicite Information

Help on Chemical Formula: Chemical Formula:

Tl5Sb9(As,Sb)4S22

Help on Composition: Composition:

Molecular Weight = 3,169.63 gm

Thallium 32.24 % Tl

Antimony 38.41 % Sb

Arsenic 7.09 % As

Sulfur 22.26 % S

______

100.00 %

Help on Empirical Formula: Empirical Formula:

Tl5Sb9As3SbS22

Help on Environment: Environment:

In the Sb-poor, As-rich, and Tl-rich zone of the Crven Dol mine.

Help on IMA Status: IMA Status:

Approved IMA 1995

Help on Locality: Locality:

Crven Dol mine, Allchar, Macedonia. Link to MinDat.org Location Data.

Help on Name Origin: Name Origin:

For Prof. S. Jankovic (1925- ) in recognition of his work on the mineralogy and geology of Allchar.

Help on Name Pronunciation: Name Pronunciation:

Jankovicite + Pronunciation Say JANKOVICITE

Help on Synonym: Synonym:

ICSD 79846

IMA1993-050

PDF 46-1363

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Jankovicite Crystallography

Help on Axial Ratios: Axial Ratios:

a:b:c =0.849:1:2.0195

Help on Cell Dimensions: Cell Dimensions:

a = 7.393, b = 8.707, c = 17.584, Z = 1; alpha = 103.133°, beta = 91.132°, gamma = 109.833° V = 1,036.71 Den(Calc)= 5.08

Help on Crystal System: Crystal System:

Triclinic - PinacoidalH-M Symbol ( 1) Space Group: P1

Click Here for Large Jankovicite Structure Window Crystal Structure:

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Help on Above

| | Libowitzky E , Giester G , Tillmanns E , European Journal of Mineralogy , 7 (1995) p.479-487, The crystal structure of jankovicite, Tl5Sb9(As,Sb)4S22 | | -------------------------------------------------------------------------------------------------------------------------------------------------------- |

Physical Properties of Jankovicite

Help on Cleavage: Cleavage:

{001} Perfect, {010} Perfect, {100} Perfect

Help on Color: Color:

Black.

Help on Density: Density:

5.08

Help on Diaphaneity: Diaphaneity:

Opaque

Help on Fracture: Fracture:

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

Help on Habit: Habit:

Tabular - Form dimensions are thin in one direction.

Help on Hardness: Hardness:

2 - Gypsum

Help on Luminescence: Luminescence:

Non-fluorescent.

Help on Luster: Luster:

Metallic

Help on Streak: Streak:

violet brown

Optical Properties of Jankovicite

Help on RL Anisotrophism: RL Anisotrophism:

Distinct to strong, with gray-blue to green-blue effects.

Help on RL Bireflectance: RL Bireflectance:

Low to medium.

Help on RL Color: RL Color:

White to bluish white.

Help on Reflectivity Reflectivity

Standardized Intensity (100%) Reflection Spectra of Jankovicite in Air

λ R1 R 2 ∑ R1(λ) ∑ R2(λ)
470 nm 34.00 36.70
546 nm 32.00 34.90
589 nm 30.50 33.00
650 nm 28.10 29.70

Calculated Relative Intensity Colors of Jankovicite in Air

RelativeIntensity 0% 40% 80% 100% 120% 160% 200% 240% 280% 300%
R1
R2

Calculated Properties of Jankovicite

Help on Electron Density: Electron Density:

Bulk Density (Electron Density)=4.40 gm/cc
note: Specific Gravity of Jankovicite =5.10 gm/cc.

Help on Fermion Index: Fermion Index:

Fermion Index = 0.0016692436
Boson Index = 0.9983307564

Help on Photoelectric: Photoelectric:

PEJankovicite = 687.87 barns/electron
U=PEJankovicite x rElectron Density=3,023.78 barns/cc.

Help on Radioactivity: Radioactivity:

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

Jankovicite Classification

Help on Dana Class: Dana Class:

03.08.13.02 (03)Sulfides - Sulfosalts

(03.08)where 1 < z/y <2 - (A+)i (A++)j [By Cz], A=metals, B=semi-metals, C=non-metals

(03.08.13)Dana Group

03.08.13.01 Rebulite Tl5Sb5As8S22 P 21/c 2/m

03.08.13.02 Jankovicite Tl5Sb9(As,Sb)4S22 P1 1

Help on Strunz Class: Strunz Class:

02.HD.20 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf

02.H - Sulfosalts of SnS Archetype

02.HD -With Tl

02.HD.20 Jankovicite Tl5Sb9(As,Sb)4S22 P1 1

Other Jankovicite Information

Help on References: References:

NAME( MinRec) PHYS. PROP.(Am.Min.,Vol.81,1996) OPTIC PROP.(MinRec, v 27, p 302)

Help on See Also: See Also:

Links to other databases for Jankovicite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - GeoScienceWorld
5 - Google Images
6 - Google Scholar
7 - Handbook of Mineralogy (MinSocAm)
8 - Handbook of Mineralogy (UofA)
9 - MinDAT
10 - Mineralienatlas (Deutsch)
11 - Online Mineral Museum
12 - QUT Mineral Atlas
13 - Ruff.Info
14 - WWW-MINCRYST

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

Jankovicite

Tl5Sb9(As,Sb)4S22
Dana No: 03.08.13.02 Strunz No: 02.HD.20
Locality:

Notes: