Shuangfengite Mineral Data

General Shuangfengite Information

Chemical Formula:

IrTe2

Composition:

Molecular Weight = 447.42 gm

Tellurium 57.04 % Te

Iridium 42.96 % Ir

______

100.00 %

Empirical Formula:

IrTe₂

Environment:

Placer concentrates and crushed ores of a chromite deposit.

IMA Status:

Approved IMA 1994

Locality:

Located hear the village of Shuangfeng about 190 km NNE of Beijing, People's Republic of China. Link to MinDat.org Location Data.

Name Origin:

After the locality.

Name Pronunciation:

Shuangfengite + Pronunciation

Synonym:

IMA1993-018

Search for Shuangfengite 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.

Shuangfengite Crystallography

Axial Ratios:

a:c = 1:1.37045

Cell Dimensions:

a = 3.933, c = 5.39, Z = 1; V = 72.21 Den(Calc)= 10.29

Crystal System:

Trigonal - Hexagonal ScalenohedralH-M Symbol (3 2/m) Space Group: P 3m1

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

By Intensity(I/I_o): 2.85(1), 2.1(0.8), 1.58(0.7),

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

Wyckoff R W G , Crystal Structures , 1 (1963) p.239-444, Second edition. Interscience Publishers, New York, New York, Note: cadmium iodide structure

Physical Properties of Shuangfengite

Cleavage:

{001} Perfect

Color:

Black.

Density:

10.14

Diaphaneity:

Opaque

Fracture:

Unknown - Minerals too small to observe fractures.

Habit:

Massive - Granular - Common texture observed in granite and other igneous rock.

Hardness:

3 - Calcite

Luster:

Metallic

Streak:

black

Optical Properties of Shuangfengite

RL Anisotrophism:

Moderate with bluish or yellowish tint.

RL Bireflectance:

Not obvious.

RL Color:

Bright yellowish white with bluish tint.

RL Pleochroism:

Not obvious.

Reflectivity

**Standardized Intensity (100%) Reflection Spectra of Shuangfengite in Air**
λ	R₁	R₂	∑ R₁(λ)	∑ R₂(λ)
470 nm	45.50	41.80
550 nm	45.40	41.80
590 nm	45.50	42.20
650 nm	46.00	42.90

**Calculated Relative Intensity Colors of Shuangfengite in Air**
Relative Intensity	0%	30%	60%	90%	100%	120%	150%	180%	210%
R₁
R₂

Calculated Properties of Shuangfengite

Electron Density:

Bulk Density (Electron Density)=8.33 gm/cc
note: Specific Gravity of Shuangfengite =10.3 gm/cc.

Fermion Index:

Fermion Index = 0.04
Boson Index = 0.96

Photoelectric:

PE_{Shuangfengite}= 874.06 barns/electron
U=PE_{Shuangfengite} x rElectron Density=7,276.98 barns/cc.

Radioactivity:

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

Shuangfengite Classification

Dana Class:

02.12.14.06 (02)Sulfides - Including Selenides and Tellurides

(02.12)where Am Bn Xp, with (m+n):p=1:2

(02.12.14)Melonite Group (Trigonal: P-3m1) AX2 type

02.12.14.01 Melonite NiTe2 P 3m1 3 2/m

02.12.14.02 Kitkaite NiTeSe P 3m1 3 2/m

02.12.14.03 Moncheite (Pt,Pd)(Te,Bi)2 P 3m1 3 2/m

02.12.14.04 Merenskyite (Pd,Pt)(Te,Bi)2 P 3m1 3m

02.12.14.05 Berndtite SnS2 P 3m1 3 2/m

02.12.14.06 Shuangfengite IrTe2 P 3m1 3 2/m

02.12.14.07 Sudovikovite! PtSe2 P 3m1 3 2/m

Strunz Class:

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

02.E - Metal Sulfides, M:S £ 1:2

02.EA -M:S = 1:2

02.EA.20 Berndtite SnS2 P 3m1 3 2/m

02.EA.20 Merenskyite (Pd,Pt)(Te,Bi)2 P 3m1 3m

02.EA.20 Melonite NiTe2 P 3m1 3 2/m

02.EA.20 Kitkaite NiTeSe P 3m1 3 2/m

02.EA.20 Moncheite (Pt,Pd)(Te,Bi)2 P 3m1 3 2/m

02.EA.20 Sudovikovite! PtSe2 P 3m1 3 2/m

02.EA.20 Shuangfengite IrTe2 P 3m1 3 2/m

Other Shuangfengite Information

References:

NAME( MinRec) PHYS. PROP.(Am.Min.,Vol.80,p1329,1995) OPTIC PROP.(MinRec, v 27, p 120)

See Also:

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

Search for Shuangfengite using:

[AOL] [Bing] [Dog Pile] [GeoScienceWorld] [HotBot] [Ixquick] [Lycos] [MAMMA] [Scirus] [Teoma] [WebCrawler] [Wikipedia] [YAHOO]

Visit our Advertisers for Shuangfengite :

A Bijoux Google Search for Shuangfengite
Adam's Minerals Google Search for Shuangfengite
Cape Minerals Google Search for Shuangfengite
Dakota Matrix Minerals Google Search for Shuangfengite
Excalibur Mineral Corp. Google Search for Shuangfengite
Exceptional Minerals Google Search for Shuangfengite
John Betts Fine Minerals Search for Shuangfengite
McDougall Minerals Google Search for Shuangfengite
Mineral News Website Link
Rock and Mineral Shows Google Search for Shuangfengite
Weinrich Minerals, Inc. Google Search for Shuangfengite

Ask about Shuangfengite 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 Shuangfengite Specimen Label here :

Shuangfengite

IrTe2
Dana No: 02.12.14.06 Strunz No: 02.EA.20
Locality:

Notes: