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Julienite Mineral Data

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General Julienite Information

Help on Chemical  Formula: Chemical Formula: Na2Co++(SCN)4•8(H2O)
Help on Composition: Composition: Molecular Weight = 481.37 gm
   Sodium     9.55 %  Na
   Cobalt    12.24 %  Co
   Hydrogen   3.35 %  H
   Carbon     9.98 %  C
   Sulfur    26.65 %  S
   Nitrogen  11.64 %  N
   Oxygen    26.59 %  O
            100.00 % 
Help on Empirical Formula: Empirical Formula: Na2Co(SCN)4•8(H2O)
Help on Environment: Environment: Cobaltian wad in a white talc schist.
Help on IMA Status: IMA Status: Not Approved (Pre-IMA) 1928
Help on Locality: Locality: Chamitumba, near Kambove, Shaba, Zaire. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Henri Julien (-1920), Belgian scientist.
Help on Name Pronunciation: Name Pronunciation: Julienite + Pronunciation Say JULIENITE
Help on Synonym: Synonym: ICSD 16830
  PDF 2-372
  Sodium colbalt thiocyanate

Julienite Image

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Comments: Bright blue nearly opaque prismatic micro crystal of julienite.
Location: Chamibumba, near Kambove, Katanga, Shaba, Zaire. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Julienite Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:0.60281
Help on Cell Dimensions: Cell Dimensions: a = 9.24, c = 5.57, Z = 1; V = 475.55 Den(Calc)= 1.68
Help on Crystal System: Crystal System: Tetragonal - Dipyramidal H-M Symbol (4/m) Space Group: P 41/n
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 1.375(1), 3.23(1), 3.55(1),

Physical Properties of Julienite

Help on Cleavage: Cleavage: {001} Good
Help on Color: Color: Blue.
Help on Density: Density: 1.648
Help on Habit: Habit: Encrustations - Forms crust-like aggregates on matrix.

Optical Properties of Julienite

Help on Optical Data: Optical Data: Uniaxial (+), w=1.556, e=1.645, bire=0.0890.

Calculated Properties of Julienite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=1.71 gm/cc
note: Specific Gravity of Julienite =1.68 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.11
Boson Index = 0.89
Help on Photoelectric: Photoelectric: PEJulienite = 5.62 barns/electron
U=PEJulienite x rElectron Density= 9.61 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Julienite is Not Radioactive

Julienite Classification

Help on  Dana Class: Dana Class: (50)Salts of Organic Acids
  (50.02)(Mellitates, Citrates, Cyanates, and Acetates)
  (50.02.03)Dana Group Julienite* Na2Co(SCN)4•8(H2O) P 41/n 4/m
Help on  Strunz Class: Strunz Class: 10.AD.05 10 - ORGANIC COMPOUNDS
  10.A - Salts of Organic Acids
  10.AD -Cyanates
10.AD.05 Julienite* Na2Co(SCN)4•8(H2O) P 41/n 4/m

Other Julienite Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Julienite :
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: 10.AD.05





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