Mineralogy Database

Wurtzite Mineral Data

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General Wurtzite Information

Help on Chemical  Formula: Chemical Formula: (Zn,Fe)S
Help on Composition: Composition: Molecular Weight = 96.50 gm
   Zinc    60.98 %  Zn
   Iron     5.79 %  Fe
   Sulfur  33.23 %  S
          100.00 % 
Help on Empirical Formula: Empirical Formula: Zn0.9Fe2+0.1S
Help on Environment: Environment: Of hydrothermal origin in veins with other sulfides.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1861
Help on Locality: Locality: Pr´┐Żbram, Stredocesky kraj, Czech Republic Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after the French chemist, Charles A. Wurtze (1817-1884).
Help on Name Pronunciation: Name Pronunciation: Wurtzite Say WURTZITE
Help on Synonym: Synonym: Radial Blende

Wurtzite Image

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  Wurtzite   Barite

Comments: Compact, dark, metallic crystals of wurtzite intermixed with galena crystals and white barite blades.
Location: Huanzala, Huanuco Dept., Peru. Scale: 5 x 4 x 2.5 cm.
© Isaias Casanova / IC Minerals

Wurtzite Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:1.63874
Help on Cell Dimensions: Cell Dimensions: a = 3.82, c = 6.26, Z = 2; V = 79.11 Den(Calc)= 4.05
Help on Crystal System: Crystal System: Hexagonal - Dihexagonal Pyramidal H-M Symbol (6mm) Space Group: P 63mc
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.31(1), 3.13(0.86), 2.93(0.84),

Physical Properties of Wurtzite

Help on Cleavage: Cleavage: {1010} Good, {0001} Good
Help on Color: Color: Brownish black, Orange brown, Reddish brown, Black.
Help on Density: Density: 3.98 - 4.08, Average = 4.03
Help on Diaphaneity: Diaphaneity: Translucent
Help on Fracture: Fracture: Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern.
Help on Habit: Habit: Colloform - Forming from a gel or colloidal mass.
Help on Habit: Habit: Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite)
Help on Habit: Habit: Tabular - Form dimensions are thin in one direction.
Help on Hardness: Hardness: 3.5-4 - Copper Penny-Fluorite
Help on Luminescence: Luminescence: Fluorescent, Long UV=orange red.
Help on Luster: Luster: Adamantine - Resinous
Help on Magnetism: Magnetism: Nonmagnetic
Help on Streak: Streak: light brown

Optical Properties of Wurtzite

Help on Dichroism (e): Dichroism (e): none.
Help on Dichroism (w): Dichroism (w): none.
Help on Optical Data: Optical Data: Uniaxial (+), w=2.356, e=2.378, bire=0.0220.
Help on RL Color: RL Color: Deep reddish brown to dark brown to brown-black; yellow to dark brown internal reflections.
Help on Reflectivity Reflectivity
Standardized Intensity (100%) Reflection Spectra of Wurtzite in Air
λ R  ∑ R(λ) 
 400 nm   19.20   
 420 nm   18.70 
 440 nm   18.20 
 460 nm   17.80 
 480 nm   17.40 
 500 nm   17.10 
 520 nm   16.90 
 540 nm   16.60 
 560 nm   16.40 
 580 nm   16.30 
 600 nm   16.20 
 620 nm   16.10 
 640 nm   16.10 
 660 nm   16.10 
 680 nm   16.00 
 700 nm   15.80 
Calculated Relative Intensity Colors of Wurtzite in Air
   0%   60% 100% 120% 180% 240% 300% 360% 420% 480% 540%

Calculated Properties of Wurtzite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.83 gm/cc
note: Specific Gravity of Wurtzite =4.05 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.02
Boson Index = 0.98
Help on Photoelectric: Photoelectric: PEWurtzite = 34.43 barns/electron
U=PEWurtzite x rElectron Density= 131.76 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Wurtzite is Not Radioactive

Wurtzite Classification

Help on  Dana Class: Dana Class: (02)Sulfides - Including Selenides and Tellurides
  (02.08)where Am Bn Xp, with (m+n):p=1:1
  (02.08.07)Wurtzite Group (Hexagonal: P63mc) Wurtzite (Zn,Fe)S P 63mc 6mm Greenockite CdS P 63mc 6mm Cadmoselite CdSe P 63mc 6mm Rambergite! MnS P 63mc 6mm
Help on  Strunz Class: Strunz Class: 02.CB.45 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.45 Cadmoselite CdSe P 63mc 6mm
02.CB.45 Greenockite CdS P 63mc 6mm
02.CB.45 Rambergite! MnS P 63mc 6mm
02.CB.45 Wurtzite (Zn,Fe)S P 63mc 6mm

Other Wurtzite Information

Help on References: References: NAME( Duda&Rejl90) PHYS. PROP.(www.saint-hilaire.ca) OPTIC PROP.(AntBidBlaNic1)
Help on See Also: See Also: Links to other databases for Wurtzite :
1 - Alkali-Nuts(English)
2 - Alkali-Nuts(Francais)
3 - Am. Min. Crystal Structure Database
4 - Amethyst Galleries' Mineral Gallery
5 - Athena
6 - Franklin Minerals(Dunn)
7 - GeoScienceWorld
8 - Google Images
9 - Google Scholar
10 - Handbook of Mineralogy (MinSocAm)
11 - Handbook of Mineralogy (UofA)
12 - HyperPhysics
13 - MinDAT
14 - Mineral and Gemstone Kingdom
15 - Mineralienatlas (Deutsch)
16 - Online Mineral Museum
17 - QUT Mineral Atlas
18 - Ruff.Info

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Dana No: Strunz No: 02.CB.45





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