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Stumpflite Mineral Data
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General Stumpflite Information
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 Chemical Formula: |
Pt(Sb,Bi) |
| Composition: |
Molecular Weight = 338.64 gm |
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Bismuth 15.43 % Bi |
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Antimony 26.96 % Sb |
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Platinum 57.61 % Pt |
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______ |
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100.00 % |
| Empirical Formula: |
PtSb0.75Bi0.25 |
| Environment: |
In platinum concentrates from an ultramafic pipe deposit intergrown with geversite. |
| IMA Status: |
Approved IMA 1972 |
| Locality: |
Driekop mine, Transvaal, South Africa Link to MinDat.org Location Data. |
| Name Origin: |
Named for Eugen Friedrich Stumpfl (1931-), Mineralogist, Mining University Leoben, Austria. |
| Name Pronunciation: |
Stumpflite + Pronunciation  |
| Synonym: |
ICSD 42547 |
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PDF 25-1482 |
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Stumpflite Crystallography
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| Axial Ratios: |
a:c = 1:1.31832 |
| Cell Dimensions: |
a = 4.175, c = 5.504, Z = 2; V = 83.08 Den(Calc)= 13.54 |
| Crystal System: |
Hexagonal - Dihexagonal Dipyramidal H-M Symbol (6/m 2/m 2/m) Space Group: P 63/mmc |
| X Ray Diffraction: |
By Intensity(I/Io): 2.192(1), 3.027(1), 2.088(0.8), |
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Physical Properties of Stumpflite
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| Cleavage: |
None |
| Color: |
Silver white. |
| Density: |
13.52 |
| Diaphaneity: |
Opaque |
| Habit: |
Inclusions - Generally found as inclusions in other minerals. |
| Habit: |
Microscopic Crystals - Crystals visible only with microscopes. |
| Hardness: |
5 - Apatite |
| Luster: |
Metallic |
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Optical Properties of Stumpflite
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| RL Anisotrophism: |
Strong, in brownish yellow. |
| RL Color: |
Cream. |
| RL Pleochroism: |
Perceptible. |
| Reflectivity |
Standardized Intensity (100%) Reflection Spectra of Stumpflite in Air
| λ |
R1 |
R2 |
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∑ R1(λ) |
∑ R2(λ) |
| 400 nm |
42.70 |
46.60 |
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| 420 nm |
46.00 |
49.40 |
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| 440 nm |
49.30 |
52.20 |
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| 460 nm |
52.10 |
54.90 |
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| 480 nm |
54.50 |
57.30 |
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| 500 nm |
56.60 |
59.40 |
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| 520 nm |
58.10 |
61.30 |
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| 540 nm |
59.30 |
63.00 |
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| 560 nm |
60.20 |
64.40 |
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| 580 nm |
61.20 |
65.60 |
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| 600 nm |
62.10 |
66.60 |
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| 620 nm |
62.90 |
67.50 |
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| 640 nm |
63.60 |
68.50 |
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| 660 nm |
64.40 |
69.20 |
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| 680 nm |
64.90 |
70.00 |
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| 700 nm |
65.20 |
70.60 |
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Calculated Relative Intensity Colors of Stumpflite in Air
Relative
Intensity |
0% |
20% |
40% |
60% |
80% |
100% |
120% |
140% |
160% |
180% |
| R1 |
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| R2 |
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Calculated Properties of Stumpflite
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| Electron Density: |
Bulk Density (Electron Density)=11.0 gm/cc
note: Specific Gravity of Stumpflite =13.5 gm/cc.
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| Fermion Index: |
Fermion Index = 0.19
Boson Index = 0.81 |
| Photoelectric: |
PEStumpflite =1,327.08 barns/electron
U=PEStumpflite x rElectron Density=14538.88 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Stumpflite is Not Radioactive |
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Stumpflite Classification
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| Dana Class: |
02.08.11.08 (02)Sulfides - Including Selenides and Tellurides |
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(02.08)where Am Bn Xp, with (m+n):p=1:1 |
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(02.08.11)Nickeline Group (Hexagonal: P63/mmc) |
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02.08.11.01 Nickeline NiAs P 63/mmc 6/m 2/m 2/m |
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02.08.11.02 Breithauptite NiSb P 63/mmc 6/m 2/m 2/m |
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02.08.11.03 Sederholmite NiSe P 63/mmc 6/m 2/m 2/m |
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02.08.11.04 Hexatestibiopanickelite (Ni,Pd)(Te,Sb) P 63/mmc 6/m 2/m 2/m |
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02.08.11.05 Sudburyite (Pd,Ni)Sb P 63/mmc 6/m 2/m 2/m |
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02.08.11.06 Kotulskite Pd(Te,Bi) P 63/mmc 6/m 2/m 2/m |
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02.08.11.07 Sobolevskite PdBi P 63/mmc 6/m 2/m 2/m |
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02.08.11.08 Stumpflite Pt(Sb,Bi) P 63/mmc 6/m 2/m 2/m |
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02.08.11.09 Langisite (Co,Ni)As P 63/mmc 6/m 2/m 2/m |
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02.08.11.10 Freboldite CoSe P 63/mmc 6/m 2/m 2/m |
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02.08.11.11 Achavalite! FeSe P 63/mmc 6/m 2/m 2/m |
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02.08.11.12 Sorosite! Cu(Sn,Sb) P 63/mmc 6/m 2/m 2/m |
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02.08.11.13 Vavrinite! Ni2SbTe2 P 63/mmc 6/m 2/m 2/m |
| Strunz Class: |
02.CC.05 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf |
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02.C - Metal Sulfides, M:S = 1:1 (and similar) |
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02.CC -With Ni, Fe, Co, PGE, etc. |
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02.CC.05 Achavalite FeSe P 63/mmc 6/m 2/m 2/m |
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02.CC.05 Breithauptite NiSb P 63/mmc 6/m 2/m 2/m |
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02.CC.05 Freboldite CoSe P 63/mmc 6/m 2/m 2/m |
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02.CC.05 Hexatestibiopanickelite (Ni,Pd)(Te,Sb) P 63/mmc 6/m 2/m 2/m |
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02.CC.05 Langisite (Co,Ni)As P 63/mmc 6/m 2/m 2/m |
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02.CC.05 Jaipurite* CoS P 63/mmc 6/m 2/m 2/m |
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02.CC.05 Kotulskite Pd(Te,Bi) P 63/mmc 6/m 2/m 2/m |
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02.CC.05 Nickeline NiAs P 63/mmc 6/m 2/m 2/m |
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02.CC.05 Zlatogorite! CuNiSb2 P 3m1 3 2/m |
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02.CC.05 Sederholmite NiSe P 63/mmc 6/m 2/m 2/m |
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02.CC.05 Stumpflite Pt(Sb,Bi) P 63/mmc 6/m 2/m 2/m |
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02.CC.05 Sudburyite (Pd,Ni)Sb P 63/mmc 6/m 2/m 2/m |
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02.CC.05 Sobolevskite PdBi P 63/mmc 6/m 2/m 2/m |
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Other Stumpflite Information
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| References: |
NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1) |
| See Also: |
Links to other databases for Stumpflite :
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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Stumpflite
Pt(Sb,Bi)
Dana No: 02.08.11.08 Strunz No: 02.CC.05
Locality:
Notes:
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