Mineralogy Database

Gersdorffite Mineral Data

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General Gersdorffite Information

Help on Chemical  Formula: Chemical Formula: NiAsS
Help on Composition: Composition: Molecular Weight = 165.68 gm
   Nickel   35.42 %  Ni
   Arsenic  45.22 %  As
   Sulfur   19.35 %  S
           ______ 
           100.00 % 
Help on Empirical Formula: Empirical Formula: NiAsS
Help on Environment: Environment: In hydrothermal vein deposits formed at moderate tempertures.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1843
Help on Locality: Locality: Zinkwand, Schladming, Styria, Austria. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after Herr von Gersdorff, owner of Schladming Mine, Austria.
Help on Name Pronunciation: Name Pronunciation: Gersdorffite + Pronunciation Say GERSDORFFITE
Help on Synonym: Synonym: Gray nickel pyrites
  Nickel glance
 

Gersdorffite Image

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  Gersdorffite

Comments: Massive to coarse-grained lead-gray gersdorffite crystals.
Location: Ait Ahmane Mine, Bou Azzer, Anti Atlas Mts., Morocco. Scale: Not Given.
© John Veevaert

Gersdorffite Crystallography

Help on Cell Dimensions: Cell Dimensions: a = 5.719, Z = 4; V = 187.05 Den(Calc)= 5.88
Help on Crystal System: Crystal System: Isometric - Tetartoidal H-M Symbol (2 3) Space Group: P 213
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.545(1), 2.325(0.9), 1.716(0.8),
Help on Forms: Forms:

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Help on Above

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

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Physical Properties of Gersdorffite

Help on Cleavage: Cleavage: {100} Good, {010} Good, {001} Good
Help on Color: Color: Gray, Grayish black, Silver white, Tin white.
Help on Density: Density: 5.9 - 6.33, Average = 6.11
Help on Diaphaneity: Diaphaneity: Opaque
Help on Fracture: Fracture: Brittle - Generally displayed by glasses and most non-metallic minerals.
Help on Habit: Habit: Euhedral Crystals - Occurs as well-formed crystals showing good external form.
Help on Habit: Habit: Massive - Granular - Common texture observed in granite and other igneous rock.
Help on Habit: Habit: Tabular - Form dimensions are thin in one direction.
Help on Hardness: Hardness: 5.5 - Knife Blade
Help on Luminescence: Luminescence: Non-fluorescent.
Help on Luster: Luster: Metallic
Help on Magnetism: Magnetism: Nonmagnetic
Help on Streak: Streak: grayish black
 

Optical Properties of Gersdorffite

Help on RL Color: RL Color: White.
Help on Reflectivity Reflectivity
Standardized Intensity (100%) Reflection Spectra of Gersdorffite in Air
λ R  ∑ R(λ) 
 400 nm   47.40   
 420 nm   46.60 
 440 nm   45.80 
 460 nm   45.40 
 480 nm   45.10 
 500 nm   45.00 
 520 nm   45.00 
 540 nm   45.00 
 560 nm   45.10 
 580 nm   45.30 
 600 nm   45.50 
 620 nm   45.90 
 640 nm   46.20 
 660 nm   46.50 
 680 nm   46.90 
 700 nm   47.30 
Calculated Relative Intensity Colors of Gersdorffite in Air
Relative
Intensity
   0%   30%   60%   90% 100% 120% 150% 180% 200%
R                  
 

Calculated Properties of Gersdorffite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=5.47 gm/cc
note: Specific Gravity of Gersdorffite =5.88 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0054545213
Boson Index = 0.9945454787
Help on Photoelectric: Photoelectric: PEGersdorffite = 47.24 barns/electron
U=PEGersdorffite x rElectron Density= 258.17 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Gersdorffite is Not Radioactive
 

Gersdorffite Classification

Help on  Dana Class: Dana Class: 02.12.03.02 (02)Sulfides - Including Selenides and Tellurides
  (02.12)where Am Bn Xp, with (m+n):p=1:2
  (02.12.03)Cobaltite Group (Cubic or pseudocubic crystals)
 
02.12.03.01 Cobaltite CoAsS P ca21 mm2
 
02.12.03.02 Gersdorffite NiAsS P 213 2 3
 
02.12.03.03 Ullmannite NiSbS P 213 2 3
 
02.12.03.04 Willyamite (Co,Ni)SbS P 213 2 3
 
02.12.03.05 Tolovkite IrSbS P 213 2 3
 
02.12.03.06 Platarsite (Pt,Rh,Ru)AsS P a3 2/m 3
 
02.12.03.07 Irarsite (Ir,Ru,Rh,Pt)AsS P a3 2/m 3
 
02.12.03.08 Hollingworthite (Rh,Pt,Pd)AsS P a3 2/m 3
 
02.12.03.09 Jolliffeite (Ni,Co)AsSe P a3 2/m 3
 
02.12.03.10 Padmaite PdBiSe P 213 2 3
 
02.12.03.11 Michenerite (Pd,Pt)BiTe P 213 2 3
 
02.12.03.12 Maslovite PtBiTe P 213 2 3
 
02.12.03.13 Testibiopalladite PdTe(Sb,Te) P 213 2 3
 
02.12.03.14 Changchengite! IrBiS P 213 2 3
 
02.12.03.15 Milotaite! PdSbSe P 21/3 2 3
 
02.12.03.16 Kalungaite! PdAsSe Pa3 2/m 3
Help on  Strunz Class: Strunz Class: 02.EB.25 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.25 Cobaltite CoAsS P ca21 mm2
 
02.EB.25 Changchengite! IrBiS P 213 2 3
 
02.EB.25 Hollingworthite (Rh,Pt,Pd)AsS P a3 2/m 3
 
02.EB.25 Gersdorffite NiAsS P 213 2 3
 
02.EB.25 Irarsite (Ir,Ru,Rh,Pt)AsS P a3 2/m 3
 
02.EB.25 Jolliffeite (Ni,Co)AsSe P a3 2/m 3
 
02.EB.25 Krutovite NiAs2 P a3 2/m 3
 
02.EB.25 Michenerite (Pd,Pt)BiTe P 213 2 3
 
02.EB.25 Maslovite PtBiTe P 213 2 3
 
02.EB.25 Mayingite IrBiTe P a3 2/m 3
 
02.EB.25 Padmaite PdBiSe P 213 2 3
 
02.EB.25 Platarsite (Pt,Rh,Ru)AsS P a3 2/m 3
 
02.EB.25 Ullmannite NiSbS P 213 2 3
 
02.EB.25 Tolovkite IrSbS P 213 2 3
 
02.EB.25 Testibiopalladite PdTe(Sb,Te) P 213 2 3
 
02.EB.25 Willyamite (Co,Ni)SbS P 213 2 3
 
02.EB.25 Kalungaite! PdAsSe Pa3 2/m 3
 
02.EB.25 Milotaite! PdSbSe P 21/3 2 3
 

Other Gersdorffite Information

Help on References: References: NAME( Duda&Rejl90) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1)
Help on See Also: See Also: Links to other databases for Gersdorffite :
1 - Alkali-Nuts(English)
2 - Alkali-Nuts(Francais)
3 - Am. Min. Crystal Structure Database
4 - Amethyst Galleries' Mineral Gallery
5 - Athena
6 - EUROmin Project
7 - Ecole des Mines de Paris
8 - GeoScienceWorld
9 - Google Images
10 - Google Scholar
11 - Handbook of Mineralogy (MinSocAm)
12 - Handbook of Mineralogy (UofA)
13 - HyperPhysics
14 - MinDAT
15 - Mineralienatlas (Deutsch)
16 - Online Mineral Museum
17 - QUT Mineral Atlas
18 - Ruff.Info
19 - Scandinavian mineral gallery
20 - WWW-MINCRYST

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

Gersdorffite

NiAsS
Dana No: 02.12.03.02 Strunz No: 02.EB.25
Locality:

 

Notes:

 

 
   
 


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