Comments: White moncheite with chalcopyrite (orange, blue and violet tarnishing colors) in silicate matrix. Polished section (from microprobe analysis) in reflected light.
Location: Lukkulaisvaara ultrabasic Massif, Olanga (Oulanka) River, Oulanka plutonic complex, Karelia Republic, Northern Region, Russia. Scale: Picture size 0.11 mm.
© Thomas Witzke / Abraxas-Verlag

Moncheite Insizwaite

Comments: Back-scattered electron image showing b) intergrowth of taimyrite-tatyanaite with moncheitei-insizwaite (CanMin, v 42, p 611).
Location: Kondyor PGE placer, Khabarovskiy Kray, eastern Siberia, Russia. Scale: See Image.
© Canadian Mineralogist

Moncheite Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:1.306

Help on Cell Dimensions: Cell Dimensions: a = 4.049, c = 5.288, Z = 1; V = 75.08 Den(Calc)= 10.37

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/I_o): 2.93(1), 2.11(0.8), 2.02(0.7),

Click Here for Large Moncheite Structure Window Crystal Structure:

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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 Moncheite

Help on Cleavage: Cleavage: {0001} Good

Help on Color: Color: Steel gray.

Help on Density: Density: 10

Help on Diaphaneity: Diaphaneity: Opaque

Help on Habit: Habit: Inclusions - Generally found as inclusions in other minerals.

Help on Habit: Habit: Microscopic Crystals - Crystals visible only with microscopes.

Help on Hardness: Hardness: 2-3 - Gypsum-Calcite

Help on Luster: Luster: Metallic

Help on Streak: Streak: gray

Optical Properties of Moncheite

Help on RL Anisotrophism: RL Anisotrophism: Strong, except in basal sections.

Help on RL Color: RL Color: White.

Help on RL Pleochroism: RL Pleochroism: Weak in air, distinct in oil.

Help on Reflectivity Reflectivity Standardized Intensity (100%) Reflection Spectra of Moncheite in Air

λ R₁ R₂ ∑ R₁(λ) ∑ R₂(λ)

400 nm 50.30 51.60

420 nm 51.50 52.60

440 nm 52.40 53.50

460 nm 53.40 54.40

480 nm 54.20 55.10

500 nm 54.90 55.80

520 nm 55.50 56.40

540 nm 56.00 56.90

560 nm 56.40 57.30

580 nm 56.70 57.60

600 nm 57.10 58.00

620 nm 57.40 58.40

640 nm 57.70 58.70

660 nm 58.00 59.00

680 nm 58.30 59.20

700 nm 58.40 59.40

Calculated Relative Intensity Colors of Moncheite in Air

Relative
Intensity 0% 20% 40% 60% 80% 100% 120% 140% 160% 170%

R₁

R₂

Calculated Properties of Moncheite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=8.38 gm/cc
note: Specific Gravity of Moncheite =10.4 gm/cc.

Help on Fermion Index: Fermion Index: Fermion Index = 0.15
Boson Index = 0.85

Help on Photoelectric: Photoelectric: PE_Moncheite=1,113.32 barns/electron
U=PE_Moncheite x rElectron Density=9,333.51 barns/cc.

Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Moncheite is Not Radioactive

Moncheite Classification

Help on Dana Class: Dana Class: 02.12.14.03 (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 v 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 Moncheite Information

Help on References: References: NAME( AntBidBlaNic1) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1)

Help on See Also: See Also: Links to other databases for Moncheite :
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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Print or Cut-and-Paste your Moncheite Specimen Label here :

Moncheite

(Pt,Pd)(Te,Bi)2
Dana No: 02.12.14.03 Strunz No: 02.EA.20
Locality:

Notes: