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Maucherite Mineral Data
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General Maucherite Information
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 Chemical Formula: |
Ni11As8 |
| Composition: |
Molecular Weight = 1,244.96 gm |
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Nickel 51.86 % Ni |
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Arsenic 48.14 % As |
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______ |
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100.00 % |
| Empirical Formula: |
Ni11As8 |
| Environment: |
In hydrothermal veins with other nickel arsenides and sulfides. |
| IMA Status: |
Valid Species (Pre-IMA) 1913 |
| Locality: |
Eisleben, Mansfeld Basin, Saxony-Anhalt, Germany. Link to MinDat.org Location Data. |
| Name Origin: |
Named for William Maucher (1879-1930), mineral dealer of Munich, Germany. |
| Name Pronunciation: |
Maucherite + Pronunciation  |
| Synonym: |
ICSD 34853 |
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PDF 18-875 |
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Placodine |
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Temiskamite |
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Maucherite Image |
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Images:
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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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Images:
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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 |
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Images:
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Maucherite Crystallography
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| Axial Ratios: |
a:c = 1:3.17414 |
| Cell Dimensions: |
a = 6.868, c = 21.8, Z = 4; V = 1,028.29 Den(Calc)= 8.04 |
| Crystal System: |
Tetragonal - Trapezohedral H-M Symbol (4 2 2) Space Group: P 41212,P 43212 |
| X Ray Diffraction: |
By Intensity(I/Io): 1.713(1), 2.01(1), 2.69(0.9), |
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Physical Properties of Maucherite
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| Cleavage: |
None |
| Color: |
Grayish copper red, Reddish silver white, Bronze yellow, Reddish white. |
| Density: |
7.83 |
| Diaphaneity: |
Opaque |
| Fracture: |
Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern. |
| Habit: |
Striated - Parallel lines on crystal surface or cleavage face. |
| Habit: |
Tabular - Form dimensions are thin in one direction. |
| Hardness: |
5 - Apatite |
| Luminescence: |
Non-fluorescent. |
| Luster: |
Metallic |
| Magnetism: |
Nonmagnetic |
| Streak: |
blackish gray |
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Optical Properties of Maucherite
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| RL Anisotrophism: |
Weak. |
| RL Color: |
Pinkish gray. |
| Reflectivity |
Standardized Intensity (100%) Reflection Spectra of Maucherite in Air
| λ |
R1 |
R2 |
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∑ R1(λ) |
∑ R2(λ) |
| 400 nm |
45.60 |
48.00 |
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| 420 nm |
45.80 |
48.00 |
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| 440 nm |
46.00 |
48.00 |
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| 460 nm |
46.40 |
48.20 |
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| 480 nm |
46.80 |
48.60 |
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| 500 nm |
47.20 |
49.20 |
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| 520 nm |
47.80 |
49.90 |
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| 540 nm |
48.40 |
50.80 |
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| 560 nm |
49.30 |
51.50 |
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| 580 nm |
50.30 |
52.50 |
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| 600 nm |
51.40 |
53.50 |
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| 620 nm |
52.70 |
54.80 |
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| 640 nm |
53.80 |
56.00 |
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| 660 nm |
55.00 |
57.20 |
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| 680 nm |
56.00 |
58.30 |
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| 700 nm |
57.00 |
59.30 |
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Calculated Relative Intensity Colors of Maucherite in Air
Relative
Intensity |
0% |
20% |
40% |
60% |
80% |
100% |
120% |
140% |
160% |
180% |
190% |
| R1 |
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| R2 |
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Calculated Properties of Maucherite
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| Electron Density: |
Bulk Density (Electron Density)=7.39 gm/cc
note: Specific Gravity of Maucherite =8.04 gm/cc.
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| Fermion Index: |
Fermion Index = 0.005859747
Boson Index = 0.994140253 |
| Photoelectric: |
PEMaucherite = 55.61 barns/electron
U=PEMaucherite x rElectron Density= 410.85 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Maucherite is Not Radioactive |
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Maucherite Classification
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| Dana Class: |
02.16.16.01 (02)Sulfides - Including Selenides and Tellurides |
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(02.16)with miscellaneous formulae |
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(02.16.16)Dana Group |
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02.16.16.01 Maucherite Ni11As8 P 41212,P 43212 4 2 2 |
| Strunz Class: |
02.AB.15 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf |
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02.A - Simple Sulfides, Selenides, etc |
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02.AB -Ni-metalloid alloys |
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02.AB.15 Maucherite Ni11As8 P 41212,P 43212 4 2 2 |
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Other Maucherite Information
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| References: |
NAME( AntBidBlaNic1) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1) |
| See Also: |
Links to other databases for Maucherite :
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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Maucherite
Ni11As8
Dana No: 02.16.16.01 Strunz No: 02.AB.15
Locality:
Notes:
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