Paxite Mineral Data

Paxite Mineral Data
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General Paxite Information

Help on Chemical Formula: Chemical Formula: CuAs2
Help on Composition: Composition: Molecular Weight = 213.39 gm
   Copper   29.78 %  Cu
   Arsenic  70.22 %  As
           ______ 
           100.00 % 
Help on Empirical Formula: Empirical Formula: CuAs2
Help on Environment: Environment: Hydrothermal calcite veins.
Help on IMA Status: IMA Status: Approved IMA 1961
Help on Locality: Locality: Cerny Dul, Czech Republic. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named from the Latin "pax" for peace.
Help on Name Pronunciation: Name Pronunciation: Paxite Say PAXITE
 

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Paxite Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =1.1424:1:1.5816
Help on Cell Dimensions: Cell Dimensions: a = 5.839, b = 5.111, c = 8.084, Z = 4; beta = 99.7° V = 237.80 Den(Calc)= 5.96
Help on Crystal System: Crystal System: Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 21/c
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.164(1), 3.633(0.8), 2.772(0.7),
 

Physical Properties of Paxite

Help on Cleavage: Cleavage: {???} Perfect
Help on Color: Color: Black, Black, Steel gray.
Help on Density: Density: 5.3
Help on Diaphaneity: Diaphaneity: Opaque
Help on Habit: Habit: Massive - Uniformly indistinguishable crystals forming large masses.
Help on Hardness: Hardness: 3.5-4 - Copper Penny-Fluorite
Help on Luster: Luster: Metallic
Help on Streak: Streak: black
 

Optical Properties of Paxite

Help on RL Anisotrophism: RL Anisotrophism: Very strong, in light gray-green and dark brown with violet tint.
Help on RL Color: RL Color: Light grayish white.
Help on Reflectivity Reflectivity
Standardized Intensity (100%) Reflection Spectra of Paxite in Air
λ R1 R2  ∑ R1(λ)   ∑ R2(λ) 
 400 nm   46.40   48.20 
   
 420 nm   45.80   48.40 
 440 nm   45.20   48.60 
 460 nm   44.80   48.40 
 480 nm   44.60   48.00 
 500 nm   44.60   48.50 
 520 nm   44.50   49.20 
 540 nm   44.20   49.50 
 560 nm   43.80   49.40 
 580 nm   43.50   49.10 
 600 nm   43.40   48.90 
 620 nm   43.50   48.80 
 640 nm   43.70   48.60 
 660 nm   43.80   48.30 
 680 nm   43.70   47.90 
 700 nm   43.30   47.60 
Calculated Relative Intensity Colors of Paxite in Air
Relative
Intensity		    0%   30%   60%   90% 100% 120% 150% 180% 200%
R1                  
R2                  
 

Calculated Properties of Paxite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=5.31 gm/cc
note: Specific Gravity of Paxite =5.96 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0
Boson Index = 1
Help on Photoelectric: Photoelectric: PEPaxite = 64.90 barns/electron
U=PEPaxite x rElectron Density= 344.41 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Paxite is Not Radioactive
 

Paxite Classification
Help on Dana Class: Dana Class: 02.12.05.02 (02)Sulfides - Including Selenides and Tellurides
  (02.12)where Am Bn Xp, with (m+n):p=1:2
  (02.12.05)Dana Group
 
02.12.05.01 Pararammelsbergite NiAs2 Pbma 2/m 2/m 2/m
 
02.12.05.02 Paxite CuAs2 P 21/c 2/m
Help on Strunz Class: Strunz Class: 02.EB.20 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf
  02.E - Metal Sulfides, M:S £ 1:2
  02.EB -M:S = 1:2, with Fe, Co, Ni, PGE, etc.
 
02.EB.20 Arsenopyrite FeAsS P 21/c 2/m
 
02.EB.20 Gudmundite FeSbS P 21/n 2/m
 
02.EB.20 Ruarsite RuAsS P 21/c 2/m
 
02.EB.20 Paxite CuAs2 P 21/c 2/m
 
02.EB.20 Osarsite (Os,Ru)AsS P 21/c 2/m
 

Other Paxite Information
Help on References: References: NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(AntBidBlaNic1)
Help on See Also: See Also: Links to other databases for Paxite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - Google Images
6 - Google Scholar
7 - Handbook of Mineralogy (MinSocAm)
8 - Handbook of Mineralogy (UofA)
9 - MinDAT
10 - MinMax(Deutsch)
11 - MinMax(English)
12 - Mineralienatlas (Deutsch)
13 - QUT Mineral Atlas
14 - Ruff.Info

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Paxite

CuAs2
Dana No: 02.12.05.02 Strunz No: 02.EB.20
Locality:

 

Notes: