Mineralogy Database

Cubanite Mineral Data

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General Cubanite Information

Help on Chemical  Formula: Chemical Formula: CuFe2S3
Help on Composition: Composition: Molecular Weight = 271.44 gm
   Iron    41.15 %  Fe
   Copper  23.41 %  Cu
   Sulfur  35.44 %  S
          ______ 
          100.00 % 
Help on Empirical Formula: Empirical Formula: CuFe2+2S3
Help on Environment: Environment: High temperature hydrothermal veins.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1843
Help on Locality: Locality: Barracanao, Cuba. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after its locality.
Help on Name Pronunciation: Name Pronunciation: Cubanite Say CUBANITE
Help on Synonym: Synonym: Chalmersite
  ICSD 67529
  PDF 47-1749
 

Cubanite Image

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  Cubanite

Comments: Brassy, lustrous, cyclic-twinned cubanite on matrix.
Location: Henderson # 2 Mine, Chibougamau, Quebec, Canada. Scale: 10x6 mm.
© Tom Loomis / Dakota Matrix

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  Plumbopalladinite   Valleriite   Cubanite   Pentlandite

Comments: Polished Section image (PPL) of plumbopalladinite (Pl) with polarite Po), surrounded by a rim of isoferroplatinum (Iso) with cubanite (Cu), pentlandite (Pe), and valleriite (Va).
Location: Majak Mine, Talnakh, Norilsk, Ural, Russia. Scale: Picture Size 0.7 mm.
© Thomas Witzke

Cubanite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.5814:1:0.561
Help on Cell Dimensions: Cell Dimensions: a = 6.46, b = 11.11, c = 6.233, Z = 4; V = 447.35 Den(Calc)= 4.03
Help on Crystal System: Crystal System: Orthorhombic - Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: Pcmn
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.213(1), 3.49(0.68), 3.23(0.48),
Help on Forms: Forms:

Mouse
Dbl Clk - Start-Stop Rotation
RMB - Cycle Display Modes
Drag1 - Manipulate Crystal
Drag2 - Resize

Keyboard
S - Stereo
I - Indicies
<space> - Start-Stop Rotation
F - Fit to Screen
M - Menu

Help on Above

Forms: ( 1 3 0) ( 1 3 1) ( 0 1 0) ( 1 0 1) ( 1 1 0) ( 1 0 0) ( 0 0 1)

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Physical Properties of Cubanite

Help on Cleavage: Cleavage: None
Help on Color: Color: Brass yellow, Bronze yellow.
Help on Density: Density: 4.7
Help on Diaphaneity: Diaphaneity: Opaque
Help on Fracture: Fracture: Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz).
Help on Habit: Habit: Striated - Parallel lines on crystal surface or cleavage face.
Help on Hardness: Hardness: 3.5 - Copper Penny
Help on Luminescence: Luminescence: Non-fluorescent.
Help on Luster: Luster: Metallic
Help on Magnetism: Magnetism: Strongly magnetic
Help on Streak: Streak: black
 

Optical Properties of Cubanite

Help on RL Anisotrophism: RL Anisotrophism: Distinctive.
Help on Reflectivity Reflectivity
Standardized Intensity (100%) Reflection Spectra of Cubanite in Air
λ R1 R2  ∑ R1(λ)   ∑ R2(λ) 
 400 nm   20.60   23.80 
   
 420 nm   23.60   27.70 
 440 nm   26.60   31.60 
 460 nm   29.20   34.70 
 480 nm   31.40   37.10 
 500 nm   33.40   39.00 
 520 nm   35.00   40.20 
 540 nm   36.30   41.00 
 560 nm   37.30   41.60 
 580 nm   38.30   42.00 
 600 nm   39.00   42.40 
 620 nm   39.80   42.80 
 640 nm   40.70   43.30 
 660 nm   41.60   43.80 
 680 nm   42.40   44.30 
 700 nm   43.30   44.60 
Calculated Relative Intensity Colors of Cubanite in Air
Relative
Intensity
   0%   40%   80% 100% 120% 160% 200% 240% 280% 320% 330%
R1                      
R2                      
 

Calculated Properties of Cubanite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.83 gm/cc
note: Specific Gravity of Cubanite =4.03 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.01
Boson Index = 0.99
Help on Photoelectric: Photoelectric: PECubanite = 24.86 barns/electron
U=PECubanite x rElectron Density= 95.22 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Cubanite is Not Radioactive
 

Cubanite Classification

Help on  Dana Class: Dana Class: 02.09.13.01 (02)Sulfides - Including Selenides and Tellurides
  (02.09)where Am Bn Xp, with (m+n):p=1:1
  (02.09.13)Cubanite Group
 
02.09.13.01 Cubanite CuFe2S3 Pcmn 2/m 2/m 2/m
 
02.09.13.02 Argentopyrite AgFe2S3 Pmmn 2/m 2/m 2/m
 
02.09.13.03 Isocubanite CuFe2S3 F m3m 4/m 3 2/m
Help on  Strunz Class: Strunz Class: 02.CB.55a 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf
  02.C - Metal Sulfides, M:S = 1:1 (and similar)
  02.CB -With Zn, Fe, Cu, Ag, Au, etc
 
02.CB.55a Cubanite CuFe2S3 Pcmn 2/m 2/m 2/m
 

Other Cubanite Information

Help on References: References: NAME( Ford32) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1)
Help on See Also: See Also: Links to other databases for Cubanite :
1 - Am. Min. Crystal Structure Database
2 - Amethyst Galleries' Mineral Gallery
3 - Athena
4 - EUROmin Project
5 - Ecole des Mines de Paris
6 - GeoScienceWorld
7 - Glendale Community College
8 - Google Images
9 - Google Scholar
10 - Handbook of Mineralogy (MinSocAm)
11 - Handbook of Mineralogy (UofA)
12 - HyperPhysics
13 - MinDAT
14 - Mineralienatlas (Deutsch)
15 - Online Mineral Museum
16 - QUT Mineral Atlas
17 - Ruff.Info
18 - WWW-MINCRYST

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

Cubanite

CuFe2S3
Dana No: 02.09.13.01 Strunz No: 02.CB.55a
Locality:

 

Notes:

 

 
   
 


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