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Wurtzite Mineral Data
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General Wurtzite Information
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 Chemical Formula: |
(Zn,Fe)S |
| Composition: |
Molecular Weight = 96.50 gm |
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Zinc 60.98 % Zn |
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Iron 5.79 % Fe |
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Sulfur 33.23 % S |
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______ |
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100.00 % |
| Empirical Formula: |
Zn0.9Fe2+0.1S |
| Environment: |
Of hydrothermal origin in veins with other sulfides. |
| IMA Status: |
Valid Species (Pre-IMA) 1861 |
| Locality: |
Pr�bram, Stredocesky kraj, Czech Republic Link to MinDat.org Location Data. |
| Name Origin: |
Named after the French chemist, Charles A. Wurtze (1817-1884). |
| Name Pronunciation: |
Wurtzite  |
| Synonym: |
Radial Blende |
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Wurtzite Image |
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Images:
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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 |
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Wurtzite Crystallography
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| Axial Ratios: |
a:c = 1:1.63874 |
| Cell Dimensions: |
a = 3.82, c = 6.26, Z = 2; V = 79.11 Den(Calc)= 4.05 |
| Crystal System: |
Hexagonal - Dihexagonal Pyramidal H-M Symbol (6mm) Space Group: P 63mc |
| X Ray Diffraction: |
By Intensity(I/Io): 3.31(1), 3.13(0.86), 2.93(0.84), |
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Physical Properties of Wurtzite
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| Cleavage: |
{1010} Good, {0001} Good |
| Color: |
Brownish black, Orange brown, Reddish brown, Black. |
| Density: |
3.98 - 4.08, Average = 4.03 |
| Diaphaneity: |
Translucent |
| Fracture: |
Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern. |
| Habit: |
Colloform - Forming from a gel or colloidal mass. |
| Habit: |
Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite) |
| Habit: |
Tabular - Form dimensions are thin in one direction. |
| Hardness: |
3.5-4 - Copper Penny-Fluorite |
| Luminescence: |
Fluorescent, Long UV=orange red. |
| Luster: |
Adamantine - Resinous |
| Magnetism: |
Nonmagnetic |
| Streak: |
light brown |
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Optical Properties of Wurtzite
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| Dichroism (e): |
none. |
| Dichroism (w): |
none. |
| Optical Data: |
Uniaxial (+), w=2.356, e=2.378, bire=0.0220. |
| RL Color: |
Deep reddish brown to dark brown to brown-black; yellow to dark brown internal reflections. |
| Reflectivity |
Standardized Intensity (100%) Reflection Spectra of Wurtzite in Air
| λ |
R |
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∑ R(λ) |
| 400 nm |
19.20 |
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| 420 nm |
18.70 |
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| 440 nm |
18.20 |
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| 460 nm |
17.80 |
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| 480 nm |
17.40 |
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| 500 nm |
17.10 |
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| 520 nm |
16.90 |
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| 540 nm |
16.60 |
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| 560 nm |
16.40 |
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| 580 nm |
16.30 |
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| 600 nm |
16.20 |
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| 620 nm |
16.10 |
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| 640 nm |
16.10 |
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| 660 nm |
16.10 |
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| 680 nm |
16.00 |
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| 700 nm |
15.80 |
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Calculated Relative Intensity Colors of Wurtzite in Air
Relative
Intensity |
0% |
60% |
100% |
120% |
180% |
240% |
300% |
360% |
420% |
480% |
540% |
| R |
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Calculated Properties of Wurtzite
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| Electron Density: |
Bulk Density (Electron Density)=3.83 gm/cc
note: Specific Gravity of Wurtzite =4.05 gm/cc.
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| Fermion Index: |
Fermion Index = 0.02
Boson Index = 0.98 |
| Photoelectric: |
PEWurtzite = 34.43 barns/electron
U=PEWurtzite x rElectron Density= 131.76 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Wurtzite is Not Radioactive |
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Wurtzite Classification
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| Dana Class: |
02.08.07.01 (02)Sulfides - Including Selenides and Tellurides |
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(02.08)where Am Bn Xp, with (m+n):p=1:1 |
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(02.08.07)Wurtzite Group (Hexagonal: P63mc) |
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02.08.07.01 Wurtzite (Zn,Fe)S P 63mc 6mm |
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02.08.07.02 Greenockite CdS P 63mc 6mm |
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02.08.07.03 Cadmoselite CdSe P 63mc 6mm |
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02.08.07.04 Rambergite! MnS P 63mc 6mm |
| Strunz Class: |
02.CB.45 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf |
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02.C - Metal Sulfides, M:S = 1:1 (and similar) |
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02.CB -With Zn, Fe, Cu, Ag, Au, etc |
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02.CB.45 Cadmoselite CdSe P 63mc 6mm |
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02.CB.45 Greenockite CdS P 63mc 6mm |
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02.CB.45 Rambergite! MnS P 63mc 6mm |
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02.CB.45 Wurtzite (Zn,Fe)S P 63mc 6mm |
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Other Wurtzite Information
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| References: |
NAME( Duda&Rejl90) PHYS. PROP.(www.saint-hilaire.ca) OPTIC PROP.(AntBidBlaNic1) |
| 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
19 - WWW-MINCRYST
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Wurtzite
(Zn,Fe)S
Dana No: 02.08.07.01 Strunz No: 02.CB.45
Locality:
Notes:
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