Mineralogy Database

Langisite Mineral Data

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General Langisite Information

Help on Chemical  Formula: Chemical Formula: (Co,Ni)As
Help on Composition: Composition: Molecular Weight = 133.79 gm
   Cobalt   33.04 %  Co
   Nickel   10.97 %  Ni
   Arsenic  56.00 %  As
           ______ 
           100.00 % 
Help on Empirical Formula: Empirical Formula: Co0.75Ni0.25As
Help on Environment: Environment: In pockets of ore minerals, mineralized fault gouge, and breccia cemented with calcite and quartz. Lamellar inclusions in safflorite.
Help on IMA Status: IMA Status: Approved IMA 1969
Help on Locality: Locality: Langis mine, Casey Township, Cobalt-Gowganda area, Ontario, Canada. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the locality.
Help on Name Pronunciation: Name Pronunciation: Langisite + Pronunciation Say LANGISITE
Help on Synonym: Synonym: ICSD 60406
  IMA1968-023
  PDF 24-333
 

Langisite Image

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  Langisite

Comments: Gray metallic massive langisite, altering, in white quartzite.
Location: Uncompaghre Mountains, Montrose County, Colorado, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Langisite Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:1.44912
Help on Cell Dimensions: Cell Dimensions: a = 3.538, c = 5.127, Z = 2; V = 55.58 Den(Calc)= 7.99
Help on Crystal System: Crystal System: Hexagonal - Dihexagonal Dipyramidal H-M Symbol (6/m 2/m 2/m) Space Group: P 63/mmc
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.631(1), 1.966(0.9), 1.77(0.8),
 

Physical Properties of Langisite

Help on Color: Color: Pink, Reddish gray.
Help on Density: Density: 8.17
Help on Diaphaneity: Diaphaneity: Opaque
Help on Habit: Habit: Anhedral Grains - Granular minerals without the expression of crystal shapes
Help on Habit: Habit: Inclusions - Generally found as inclusions in other minerals.
Help on Hardness: Hardness: 6-6.5 - Orthoclase-Pyrite
Help on Luster: Luster: Metallic
 

Optical Properties of Langisite

Help on RL Anisotrophism: RL Anisotrophism: Moderate, in bluish gray and light brown.
Help on RL Color: RL Color: Pinkish buff.
Help on RL Pleochroism: RL Pleochroism: Weak.
 

Calculated Properties of Langisite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=7.20 gm/cc
note: Specific Gravity of Langisite =7.99 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0012392129
Boson Index = 0.9987607871
Help on Photoelectric: Photoelectric: PELangisite = 56.76 barns/electron
U=PELangisite x rElectron Density= 408.43 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Langisite is Not Radioactive
 

Langisite Classification

Help on  Dana Class: Dana Class: 02.08.11.09 (02)Sulfides - Including Selenides and Tellurides
  (02.08)where Am Bn Xp, with (m+n):p=1:1
  (02.08.11)Nickeline Group (Hexagonal: P63/mmc)
 
02.08.11.01 Nickeline NiAs P 63/mmc 6/m 2/m 2/m
 
02.08.11.02 Breithauptite NiSb P 63/mmc 6/m 2/m 2/m
 
02.08.11.03 Sederholmite NiSe P 63/mmc 6/m 2/m 2/m
 
02.08.11.04 Hexatestibiopanickelite (Ni,Pd)(Te,Sb) P 63/mmc 6/m 2/m 2/m
 
02.08.11.05 Sudburyite (Pd,Ni)Sb P 63/mmc 6/m 2/m 2/m
 
02.08.11.06 Kotulskite Pd(Te,Bi) P 63/mmc 6/m 2/m 2/m
 
02.08.11.07 Sobolevskite PdBi P 63/mmc 6/m 2/m 2/m
 
02.08.11.08 Stumpflite Pt(Sb,Bi) P 63/mmc 6/m 2/m 2/m
 
02.08.11.09 Langisite (Co,Ni)As P 63/mmc 6/m 2/m 2/m
 
02.08.11.10 Freboldite CoSe P 63/mmc 6/m 2/m 2/m
 
02.08.11.11 Achavalite! FeSe P 63/mmc 6/m 2/m 2/m
 
02.08.11.12 Sorosite! Cu(Sn,Sb) P 63/mmc 6/m 2/m 2/m
 
02.08.11.13 Vavrinite! Ni2SbTe2 P 63/mmc 6/m 2/m 2/m
Help on  Strunz Class: Strunz Class: 02.CC.05 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf
  02.C - Metal Sulfides, M:S = 1:1 (and similar)
  02.CC -With Ni, Fe, Co, PGE, etc.
 
02.CC.05 Achavalite FeSe P 63/mmc 6/m 2/m 2/m
 
02.CC.05 Breithauptite NiSb P 63/mmc 6/m 2/m 2/m
 
02.CC.05 Freboldite CoSe P 63/mmc 6/m 2/m 2/m
 
02.CC.05 Hexatestibiopanickelite (Ni,Pd)(Te,Sb) P 63/mmc 6/m 2/m 2/m
 
02.CC.05 Langisite (Co,Ni)As P 63/mmc 6/m 2/m 2/m
 
02.CC.05 Jaipurite* CoS P 63/mmc 6/m 2/m 2/m
 
02.CC.05 Kotulskite Pd(Te,Bi) P 63/mmc 6/m 2/m 2/m
 
02.CC.05 Nickeline NiAs P 63/mmc 6/m 2/m 2/m
 
02.CC.05 Zlatogorite! CuNiSb2 P 3m1 3 2/m
 
02.CC.05 Sederholmite NiSe P 63/mmc 6/m 2/m 2/m
 
02.CC.05 Stumpflite Pt(Sb,Bi) P 63/mmc 6/m 2/m 2/m
 
02.CC.05 Sudburyite (Pd,Ni)Sb P 63/mmc 6/m 2/m 2/m
 
02.CC.05 Sobolevskite PdBi P 63/mmc 6/m 2/m 2/m
 

Other Langisite Information

Help on References: References: NAME( AntBidBlaNic1) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1)
Help on See Also: See Also: Links to other databases for Langisite :
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
15 - WWW-MINCRYST

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Langisite

(Co,Ni)As
Dana No: 02.08.11.09 Strunz No: 02.CC.05
Locality:

 

Notes:

 

 
   
 


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