Stumpflite Mineral Data + Say STUMPFLITE


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General Stumpflite Information
Help on Chemical Formula: Chemical Formula: Pt(Sb,Bi)
Help on Composition: Composition: Molecular Weight = 338.64 gm
   Bismuth   15.43 %  Bi
   Antimony  26.96 %  Sb
   Platinum  57.61 %  Pt
            ______ 
            100.00 % 
Help on Empirical Formula: Empirical Formula: PtSb0.75Bi0.25
Help on Environment: Environment: In platinum concentrates from an ultramafic pipe deposit intergrown with geversite.
Help on IMA Status: IMA Status: Approved IMA 1972
Help on Locality: Locality: Driekop mine, Transvaal, South Africa Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Eugen Friedrich Stumpfl (1931-), Mineralogist, Mining University Leoben, Austria.
Help on Synonym: Synonym: ICSD 42547
  PDF 25-1482
 

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Stumpflite Crystallography
Help on Axial Ratios: Axial Ratios: a:c = 1:1.31832
Help on Cell Dimensions: Cell Dimensions: a = 4.175, c = 5.504, Z = 2; V = 83.08 Den(Calc)= 13.54
Help on Crystal System: Crystal System: Hexagonal - Dihexagonal DipyramidalH-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): 2.192(1), 3.027(1), 2.088(0.8),
Click Here for Large Stumpflite Structure Window Crystal Structure:

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Wyckoff R W G , Crystal Structures , 1 (1963) p.85-237, Second edition. Interscience Publishers, New York, New York, Note: ideal nickel arsenide structure

 

Physical Properties of Stumpflite

Help on Cleavage: Cleavage: None
Help on Color: Color: Silver white.
Help on Density: Density: 13.52
Help on Diaphaniety: Diaphaniety: Opaque
Help on Habit: Habit: Inclusions - Generally found as inclusions in other minerals.
Help on Habit: Habit: Microscopic Crystals - Crystals visible only with microscopes.
Help on Hardness: Hardness: 5 - Apatite
Help on Luster: Luster: Metallic
 

Optical Properties of Stumpflite

Help on RL Anisotrophism: RL Anisotrophism: Strong, in brownish yellow.
Help on RL Color: RL Color: Cream.
Help on RL Pleochroism: RL Pleochroism: Perceptible.
Help on Reflectivity Reflectivity
Standardized Intensity (100%) Reflection Spectra of Stumpflite in Air
λ R1 R2  ∑ R1(λ)   ∑ R2(λ) 
 400 nm   42.70   46.60 
   
 420 nm   46.00   49.40 
 440 nm   49.30   52.20 
 460 nm   52.10   54.90 
 480 nm   54.50   57.30 
 500 nm   56.60   59.40 
 520 nm   58.10   61.30 
 540 nm   59.30   63.00 
 560 nm   60.20   64.40 
 580 nm   61.20   65.60 
 600 nm   62.10   66.60 
 620 nm   62.90   67.50 
 640 nm   63.60   68.50 
 660 nm   64.40   69.20 
 680 nm   64.90   70.00 
 700 nm   65.20   70.60 
Calculated Relative Intensity Colors of Stumpflite in Air
Relative
Intensity		    0%   20%   40%   60%   80% 100% 120% 140% 160% 180%
R1                    
R2                    
 

Calculated Properties of Stumpflite

Help on Electron Density: Electron Density:

relectron=11.0 gm/cc
note: rStumpflite =13.5 gm/cc.
Help on Fermion Index Fermion Index Fermion Index = 0.19471
Boson Index = 0.80529
Help on Photoelectric: Photoelectric:

PEStumpflite =1,327.08 barns/electron
U=PEStumpflite x relectron=14538.88 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Stumpflite is Not Radioactive
 

Stumpflite Classification
Help on Dana Class: Dana Class: 2.8.11.8 (2)Sulfides - Including Selenides and Tellurides
  (2.8)where Am Bn Xp, with (m+n):p=1:1
  (2.8.11)Nickeline Group (Hexagonal: P63/mmc)
 
2.8.11.1 Nickeline NiAs P 63/mmc 6/m 2/m 2/m
 
2.8.11.2 Breithauptite NiSb P 63/mmc 6/m 2/m 2/m
 
2.8.11.3 Sederholmite NiSe P 63/mmc 6/m 2/m 2/m
 
2.8.11.4 Hexatestibiopanickelite (Ni,Pd)(Te,Sb) P 63/mmc 6/m 2/m 2/m
 
2.8.11.5 Sudburyite (Pd,Ni)Sb P 63/mmc 6/m 2/m 2/m
 
2.8.11.6 Kotulskite Pd(Te,Bi) P 63/mmc 6/m 2/m 2/m
 
2.8.11.7 Sobolevskite PdBi P 63/mmc 6/m 2/m 2/m
 
2.8.11.8 Stumpflite Pt(Sb,Bi) P 63/mmc 6/m 2/m 2/m
 
2.8.11.9 Langisite (Co,Ni)As P 63/mmc 6/m 2/m 2/m
 
2.8.11.10 Freboldite CoSe P 63/mmc 6/m 2/m 2/m
 
2.8.11.11 Sorosite! Cu(Sn,Sb) P 63/mmc 6/m 2/m 2/m
Help on Strunz Class: Strunz Class: II/C.20-95 II - Sulfides and sulphosalts
  II/C - Sulfides with metal: sulfur, selenium and tellurium = 1:1
  II/C.20 - Nickeline group and related compounds, Polarite - Cherepanovite series
 
II/C.20-05 Sorosite! Cu(Sn,Sb) P 63/mmc 6/m 2/m 2/m
 
II/C.20-10 Langisite (Co,Ni)As P 63/mmc 6/m 2/m 2/m
 
II/C.20-20 Nickeline NiAs P 63/mmc 6/m 2/m 2/m
 
II/C.20-30 Breithauptite NiSb P 63/mmc 6/m 2/m 2/m
 
II/C.20-40 Freboldite CoSe P 63/mmc 6/m 2/m 2/m
 
II/C.20-50 Sederholmite NiSe P 63/mmc 6/m 2/m 2/m
 
II/C.20-70 Hexatestibiopanickelite (Ni,Pd)(Te,Sb) P 63/mmc 6/m 2/m 2/m
 
II/C.20-75 Yuanjiangite AuSn P 63/mmc 6/m 2/m 2/m
 
II/C.20-80 Kotulskite Pd(Te,Bi) P 63/mmc 6/m 2/m 2/m
 
II/C.20-90 Sudburyite (Pd,Ni)Sb P 63/mmc 6/m 2/m 2/m
 
II/C.20-95 Stumpflite Pt(Sb,Bi) P 63/mmc 6/m 2/m 2/m
 
II/C.20-100 Polarite Pd(Bi,Pb) Ccm21 mm2
 
II/C.20-110 Sobolevskite PdBi P 63/mmc 6/m 2/m 2/m
 
II/C.20-120 Ruthenarsenite (Ru,Ni)As P nma 2/m 2/m 2/m
 
II/C.20-130 Cherepanovite RhAs P nma 2/m 2/m 2/m
 

Other Stumpflite Information
Help on References: References: NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1)
Help on See Also: See Also: Links to other databases for Stumpflite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (UofA) 7 -MinDAT 8 -MinMax(Deutsch) 9 -MinMax(English) 10 -Mineralienatlas (Deutsch) 11 -QUT Mineral Atlas 12 - WWW-MINCRYST 13 -École des Mines de Paris

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Stumpflite

Pt(Sb,Bi)
Dana No: 2.8.11.8 Strunz No: II/C.20-95
Locality:

 

Notes:

 
 
   
 
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