Shuangfengite Mineral Data (original) (raw)

General Shuangfengite Information

Help on Chemical Formula: Chemical Formula:

IrTe2

Help on Composition: Composition:

Molecular Weight = 447.42 gm

Tellurium 57.04 % Te

Iridium 42.96 % Ir

______

100.00 %

Help on Empirical Formula: Empirical Formula:

IrTe2

Help on Environment: Environment:

Placer concentrates and crushed ores of a chromite deposit.

Help on IMA Status: IMA Status:

Approved IMA 1994

Help on Locality: Locality:

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

Help on Name Origin: Name Origin:

After the locality.

Help on Name Pronunciation: Name Pronunciation:

Shuangfengite + Pronunciation Say SHUANGFENGITE

Help on Synonym: Synonym:

IMA1993-018

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Shuangfengite Crystallography

Help on Axial Ratios: Axial Ratios:

a:c = 1:1.37045

Help on Cell Dimensions: Cell Dimensions:

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

Help on Crystal System: 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/Io): 2.85(1), 2.1(0.8), 1.58(0.7),

Click Here for Large Shuangfengite Structure Window Crystal Structure:

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drag2 - RMB Resize/Rotate
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| | 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

Help on Cleavage: Cleavage:

{001} Perfect

Help on Color: Color:

Black.

Help on Density: Density:

10.14

Help on Diaphaneity: Diaphaneity:

Opaque

Help on Fracture: Fracture:

Unknown - Minerals too small to observe fractures.

Help on Habit: Habit:

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

Help on Hardness: Hardness:

3 - Calcite

Help on Luster: Luster:

Metallic

Help on Streak: Streak:

black

Optical Properties of Shuangfengite

Help on RL Anisotrophism: RL Anisotrophism:

Moderate with bluish or yellowish tint.

Help on RL Bireflectance: RL Bireflectance:

Not obvious.

Help on RL Color: RL Color:

Bright yellowish white with bluish tint.

Help on RL Pleochroism: RL Pleochroism:

Not obvious.

Help on Reflectivity Reflectivity

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

λ R1 R 2 ∑ 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

RelativeIntensity 0% 30% 60% 90% 100% 120% 150% 180% 210%
R1
R2

Calculated Properties of Shuangfengite

Help on Electron Density: Electron Density:

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

Help on Fermion Index: Fermion Index:

Fermion Index = 0.04
Boson Index = 0.96

Help on Photoelectric: Photoelectric:

PEShuangfengite = 874.06 barns/electron
U=PEShuangfengite x rElectron Density=7,276.98 barns/cc.

Help on Radioactivity: Radioactivity:

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

Shuangfengite Classification

Help on Dana Class: 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

Help on Strunz Class: 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

Help on References: References:

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

Help on See Also: 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

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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: