Mineralogy Database

Chvilevaite Mineral Data

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General Chvilevaite Information

Help on Chemical  Formula: Chemical Formula: Na(Cu,Fe,Zn)2S2
Help on Composition: Composition: Molecular Weight = 209.96 gm
   Sodium  10.95 %  Na
   Zinc     6.23 %  Zn
   Iron    15.96 %  Fe
   Copper  36.32 %  Cu
   Sulfur  30.54 %  S
          100.00 % 
Help on Empirical Formula: Empirical Formula: NaCu1.2Fe2+0.6Zn0.2S2
Help on Environment: Environment: In heavy sands derived from the contact metamorphic zone between a siliceous marble and ultramafic rock.
Help on IMA Status: IMA Status: Approved IMA 1988
Help on Locality: Locality: From an unspecified locality in Sichuan Province, China. In the Gavasai ore field, location not further given, USSR. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: From the Greek "chroma," "color," as all chromium compounds are colored.
Help on Synonym: Synonym: ICSD 39255
  PDF 42-1366

Chvilevaite Image

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Comments: Black metallic chvilevaite in sandstone. Part of a drillcore.
Location: La Serena, Region III, Chile. Scale: Specimen Size 0.8x1.8 cm.
© Diederik Visser

Chvilevaite Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:1.76813
Help on Cell Dimensions: Cell Dimensions: a = 3.873, c = 6.848, Z = 1; V = 88.96 Den(Calc)= 3.92
Help on Crystal System: Crystal System: Trigonal - Ditrigonal Pyramidal H-M Symbol (3m) Space Group: P 3m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 1.945(1), 2.4(1), 3.02(1),

Physical Properties of Chvilevaite

Help on Cleavage: Cleavage: {???} Perfect
Help on Color: Color: Bronze, Black.
Help on Diaphaneity: Diaphaneity: Opaque
Help on Hardness: Hardness: 3.5-4 - Copper Penny-Fluorite
Help on Luster: Luster: Metallic

Optical Properties of Chvilevaite

Help on RL Anisotrophism: RL Anisotrophism: Strong, from black to white.
Help on RL Color: RL Color: Orange, changing to rosy purple with time.
Help on RL Pleochroism: RL Pleochroism: Distinct, from light orange to dark gray with a lilac tint.
Help on Reflectivity Reflectivity
Standardized Intensity (100%) Reflection Spectra of Chvilevaite in Air
λ R1 R2  ∑ R1(λ)   ∑ R2(λ) 
 420 nm   17.90   17.90 
 440 nm   17.70   18.00 
 460 nm   17.50   18.40 
 480 nm   17.40   19.00 
 500 nm   17.30   19.70 
 520 nm   17.40   20.70 
 540 nm   17.50   21.60 
 560 nm   17.70   22.50 
 580 nm   17.80   23.30 
 600 nm   18.00   24.00 
 620 nm   18.20   24.80 
 640 nm   18.50   25.60 
 660 nm   18.80   26.20 
 680 nm   19.10   26.80 
 700 nm   19.40   27.40 
Calculated Relative Intensity Colors of Chvilevaite in Air
   0%   50% 100% 150% 200% 250% 300% 350% 400% 450% 500%

Calculated Properties of Chvilevaite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.71 gm/cc
note: Specific Gravity of Chvilevaite =3.92 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0082279281
Boson Index = 0.9917720719
Help on Photoelectric: Photoelectric: PEChvilevaite = 26.00 barns/electron
U=PEChvilevaite x rElectron Density= 96.50 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Chvilevaite is Not Radioactive

Chvilevaite Classification

Help on  Dana Class: Dana Class: (02)Sulfides - Including Selenides and Tellurides
  (02.05)where Am Bn Xp, with (m+n):p=3:2
  (02.05.09)Dana Group Chvilevaite Na(Cu,Fe,Zn)2S2 P 3m 3m
Help on  Strunz Class: Strunz Class: 02.FB.10 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf
  02.F - Sulfides of Arsenic, Alkalies; Sulfides with Halide, Oxide, Hydroxide, H2O
  02.FB -With Alkalies (without Cl, etc.)
02.FB.10 Chvilevaite Na(Cu,Fe,Zn)2S2 P 3m 3m

Other Chvilevaite Information

Help on References: References: NAME( AntBidBlaNic1) PHYS. PROP.(Am.Min.,Vol.74,p946,1989) OPTIC PROP.(AntBidBlaNic1)
Help on See Also: See Also: Links to other databases for Chvilevaite :
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

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Dana No: Strunz No: 02.FB.10





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