Maucherite Mineral Data + Say MAUCHERITE


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General Maucherite Information
Help on Chemical Formula: Chemical Formula: Ni11As8
Help on Composition: Composition: Molecular Weight = 1,244.96 gm
   Nickel   51.86 %  Ni
   Arsenic  48.14 %  As
           ______ 
           100.00 % 
Help on Empirical Formula: Empirical Formula: Ni11As8
Help on Environment: Environment: In hydrothermal veins with other nickel arsenides and sulfides.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1913
Help on Locality: Locality: Eisleben, Mansfeld Basin, Saxony-Anhalt, Germany. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for William Maucher (1879-1930), mineral dealer of Munich, Germany.
Help on Synonym: Synonym: ICSD 34853
  PDF 18-875
  Placodine
  Temiskamite
 

Maucherite Image

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Maucherite

Comments: Massive, fine-grained, dark maucherite with cream-colored barite.
Location: Eisleben, Mansfeld Basin, Saxony-Anhalt, Germany. Scale: Specimen size 8 cm.
© Thomas Witzke / Abraxas-Verlag
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Maucherite

Comments: Reddish, semi-metallic aggregate of feathery maucherite crystals on matrix.
Location: Cobalt, Ontario, Canada. Scale: Picture size 2 mm.
© Reiner Mielke

Maucherite Crystallography
Help on Axial Ratios: Axial Ratios: a:c = 1:3.17414
Help on Cell Dimensions: Cell Dimensions: a = 6.868, c = 21.8, Z = 4; V = 1,028.29 Den(Calc)= 8.04
Help on Crystal System: Crystal System: Tetragonal - TrapezohedralH-M Symbol (4 2 2) Space Group: P 41212,P 43212
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 1.713(1), 2.01(1), 2.69(0.9),
Click Here for Large Maucherite Structure Window Crystal Structure:

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Fleet M E , American Mineralogist , 58 (1973) p.203-210, The crystal structure of maucherite (Ni11As8)

 

Physical Properties of Maucherite

Help on Cleavage: Cleavage: None
Help on Color: Color: Grayish copper red, Reddish silver white, Bronze yellow, Reddish white.
Help on Density: Density: 7.83
Help on Diaphaniety: Diaphaniety: Opaque
Help on Fracture: Fracture: Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern.
Help on Habit: Habit: Striated - Parallel lines on crystal surface or cleavage face.
Help on Habit: Habit: Tabular - Form dimensions are thin in one direction.
Help on Hardness: Hardness: 5 - Apatite
Help on Luminescence: Luminescence: None.
Help on Luster: Luster: Metallic
Help on Magnetism: Magnetism: Nonmagnetic
Help on Streak: Streak: blackish gray
 

Optical Properties of Maucherite

Help on RL Anisotrophism: RL Anisotrophism: Weak.
Help on RL Color: RL Color: Pinkish gray.
Help on Reflectivity Reflectivity
Standardized Intensity (100%) Reflection Spectra of Maucherite in Air
λ R1 R2  ∑ R1(λ)   ∑ R2(λ) 
 400 nm   45.60   48.00 
   
 420 nm   45.80   48.00 
 440 nm   46.00   48.00 
 460 nm   46.40   48.20 
 480 nm   46.80   48.60 
 500 nm   47.20   49.20 
 520 nm   47.80   49.90 
 540 nm   48.40   50.80 
 560 nm   49.30   51.50 
 580 nm   50.30   52.50 
 600 nm   51.40   53.50 
 620 nm   52.70   54.80 
 640 nm   53.80   56.00 
 660 nm   55.00   57.20 
 680 nm   56.00   58.30 
 700 nm   57.00   59.30 
Calculated Relative Intensity Colors of Maucherite in Air
Relative
Intensity		    0%   20%   40%   60%   80% 100% 120% 140% 160% 180% 190%
R1                      
R2                      
 

Calculated Properties of Maucherite

Help on Electron Density: Electron Density:

relectron=7.39 gm/cc
note: rMaucherite =8.04 gm/cc.
Help on Fermion Index Fermion Index Fermion Index = 0.00585
Boson Index = 0.99415
Help on Photoelectric: Photoelectric:

PEMaucherite = 55.61 barns/electron
U=PEMaucherite x relectron= 410.85 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Maucherite is Not Radioactive
 

Maucherite Classification
Help on Dana Class: Dana Class: 2.16.16.1 (2)Sulfides - Including Selenides and Tellurides
  (2.16)with miscellaneous formulae
  (2.16.16)Dana Group
 
2.16.16.1 Maucherite Ni11As8 P 41212,P 43212 4 2 2
Help on Strunz Class: Strunz Class: II/A.04-30 II - Sulfides and sulphosalts
  II/A - Alloys and alloylike compounds, with Copper, Silver, Gold and Nickel
  II/A.04 - Dienerite - Maucherite series
 
II/A.04-10 Dienerite Ni3As I 43d 4 3m
 
II/A.04-20 Orcelite Ni5-xAs2(x=0.23) P 63cm 6mm
 
II/A.04-30 Maucherite Ni11As8 P 41212,P 43212 4 2 2
 

Other Maucherite 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 Maucherite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - Crocoite.com Mineral Locations 4 - EUROmin Project 5 -Google Images 6 -Google Scholar 7 -Handbook of Mineralogy (UofA) 8 -MinDAT 9 -MinMax(Deutsch) 10 -MinMax(English) 11 -Mineralienatlas (Deutsch) 12 -QUT Mineral Atlas 13 - WWW-MINCRYST 14 -École des Mines de Paris

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Maucherite

Ni11As8
Dana No: 2.16.16.1 Strunz No: II/A.04-30
Locality:

 

Notes:

 
 
   
 
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