Millerite Mineral Data + Say MILLERITE

General Millerite Information
Help on Chemical Formula: Chemical Formula: NiS
Help on Composition: Composition: Molecular Weight = 90.76 gm
   Nickel  64.67 %  Ni
   Sulfur  35.33 %  S
          ______ 
          100.00 % 
Help on Empirical Formula: Empirical Formula: NiS
Help on Environment: Environment: In limestone and dolomite cavities.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1845
Help on Locality: Locality: St. Louis, Missouri and Keokuk, Kansas. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after the English mineralogist, William Hallowes Miller (1801-1880)
Help on Synonym: Synonym: Hair Pyrites
  ICSD 40054
  PDF Dec-41
 

Millerite Image

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Millerite

Comments: Fragile, acicular crystals of metallic yellow millerite in a vug.
Location: Hall's Gap, Lincoln County, Kentucky, USA. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals
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Millerite

Comments: Dense tuft of hair-like millerite crystals.
Location: Kerr-Addison mine, Timmons, Ontario, Canada. Scale: Tuft height 5 cm.
© Dave Barthelmy

Millerite Crystallography
Help on Axial Ratios: Axial Ratios: a:c = 1:0.32733
Help on Cell Dimensions: Cell Dimensions: a = 9.62, c = 3.149, Z = 9; V = 252.38 Den(Calc)= 5.37
Help on Crystal System: Crystal System: Trigonal - Hexagonal ScalenohedralH-M Symbol (3 2/m) Space Group: R 3m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.777(1), 1.863(0.95), 2.513(0.65),
Help on Forms: Forms:

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Forms: [ 2 1 1] [ 1 0 0] [ 1 0 1]

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Grice J D , Ferguson R B , The Canadian Mineralogist , 12 (1974) p.248-252, Crystal structure refinement of millerite (B-NiS)

View Additional jPOWD Structure files for Millerite
[1]
 

Physical Properties of Millerite

Help on Cleavage: Cleavage: [1011] Perfect, [0112] Perfect
Help on Color: Color: Bronze, Greenish gray, Gray, Brass yellow.
Help on Density: Density: 5.5
Help on Diaphaniety: Diaphaniety: Opaque
Help on Fracture: Fracture: Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern.
Help on Habit: Habit: Acicular - Occurs as needle-like crystals.
Help on Habit: Habit: Massive - Uniformly indistinguishable crystals forming large masses.
Help on Hardness: Hardness: 3-3.5 - Calcite-Copper Penny
Help on Luminescence: Luminescence: None.
Help on Luster: Luster: Metallic
Help on Magnetism: Magnetism: Magnetic after heating
Help on Streak: Streak: greenish black
 

Optical Properties of Millerite

Help on RL Anisotrophism: RL Anisotrophism: Strong.
Help on RL Pleochroism: RL Pleochroism: Weak in air, stronger in oil, pale yellow-brown to bright yellow.
Help on Reflectivity Reflectivity
Standardized Intensity (100%) Reflection Spectra of Millerite in Air
λ R1 R2  ∑ R1(λ)   ∑ R2(λ) 
 400 nm   26.70   29.80 
   
 420 nm   32.00   35.00 
 440 nm   37.30   40.20 
 460 nm   42.00   44.30 
 480 nm   46.60   47.40 
 500 nm   50.00   49.50 
 520 nm   52.80   51.60 
 540 nm   54.80   52.90 
 560 nm   56.10   54.00 
 580 nm   57.20   54.80 
 600 nm   58.00   55.60 
 620 nm   58.80   56.20 
 640 nm   59.50   56.80 
 660 nm   60.10   57.20 
 680 nm   60.60   57.60 
 700 nm   61.00   57.90 
Calculated Relative Intensity Colors of Millerite in Air
Relative
Intensity		    0%   30%   60%   90% 100% 120% 150% 180% 210% 230%
R1                    
R2                    
 

Calculated Properties of Millerite

Help on Electron Density: Electron Density:

relectron=5.21 gm/cc
note: rMillerite =5.37 gm/cc.
Help on Fermion Index Fermion Index Fermion Index = 0.00995
Boson Index = 0.99005
Help on Photoelectric: Photoelectric:

PEMillerite = 27.75 barns/electron
U=PEMillerite x relectron= 144.51 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Millerite is Not Radioactive
 

Millerite Classification
Help on Dana Class: Dana Class: 2.8.16.1 (2)Sulfides - Including Selenides and Tellurides
  (2.8)where Am Bn Xp, with (m+n):p=1:1
  (2.8.16)Dana Group
 
2.8.16.1 Millerite NiS R 3m 3 2/m
 
2.8.16.2 Makinenite NiSe R 3m 3m
Help on Strunz Class: Strunz Class: II/C.21-30 II - Sulfides and sulphosalts
  II/C - Sulfides with metal: sulfur, selenium and tellurium = 1:1
  II/C.21 - Millerite series
 
II/C.21-10 Lapieite CuNiSbS3 P 212121 2 2 2
 
II/C.21-20 Muckeite CuNiBiS3 P 212121 2 2 2
 
II/C.21-25 Zlatogorite! CuNiSb2 P 3m1 3 2/m
 
II/C.21-30 Millerite NiS R 3m 3 2/m
 
II/C.21-40 Makinenite NiSe R 3m 3m
 

Other Millerite Information
Help on References: References: NAME( Sinkankas66) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1)
Help on See Also: See Also: Links to other databases for Millerite :
1 - Alkali-Nuts(English) 2 - Alkali-Nuts(Francais) 3 -Am. Min. Crystal Structure Database 4 - Amethyst Galleries' Mineral Gallery 5 - Applied Mineralogy 6 -Athena 7 - Crocoite.com Mineral Locations 8 - EUROmin Project 9 - Franklin Minerals(Palache) 10 - Glendale Community College 11 -Google Images 12 -Google Scholar 13 -Handbook of Mineralogy (UofA) 14 - HyperPhysics 15 -MinDAT 16 -MinMax(Deutsch) 17 -MinMax(English) 18 -Mineralienatlas (Deutsch) 19 - Minerals of Wisconsin 20 -NSDL Reciprocal Net (JAVA) 21 -QUT Mineral Atlas 22 - WWW-MINCRYST 23 -theimage 24 -École des Mines de Paris

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Millerite

NiS
Dana No: 2.8.16.1 Strunz No: II/C.21-30
Locality:

 

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