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Maucherite

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Wilhelm Maucher, 1879-1930
Formula:
Ni11As8
System:
Tetragonal
Colour:
reddish silver-white, ...
Hardness:
5
Name:
After Wilhelm Maucher (1879-1930), mineralogist and mineral dealer, Munich, Germany.
This page provides mineralogical data about Maucherite.

Classification of Maucherite

Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
2.AB.15

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
A : Alloys
B : Ni-metalloid alloys
2.16.16.1

2 : SULFIDES
16 : Miscellaneous
3.11.26

3 : Sulphides, Selenides, Tellurides, Arsenides and Bismuthides (except the arsenides, antimonides and bismuthides of Cu, Ag and Au, which are included in Section 1)
11 : Sulphides etc. of Ni
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First Recorded Occurrence of Maucherite

Year of Discovery:
1913

Occurrences of Maucherite

Geological Setting:
Nickel-cobalt arsenide veins.

Physical Properties of Maucherite

Metallic
Diaphaneity (Transparency):
Opaque
Colour:
reddish silver-white, turning darker reddish grey on exposure to air
Streak:
dark grey
Hardness (Mohs):
5
Fracture:
Irregular/Uneven
Density:
7.83 g/cm3 (Measured)    

Crystallography of Maucherite

Crystal System:
Tetragonal
Class (H-M):
4 2 2 - Trapezohedral
Space Group:
P41 21 2
Cell Parameters:
a = 6.85Å, c = 21.75Å
Ratio:
a:c = 1 : 3.175
Unit Cell Volume:
V 1,020.56 ų (Calculated from Unit Cell)

Chemical Properties of Maucherite

Formula:
Ni11As8
Essential elements:
All elements listed in formula:
Common Impurities:
Co,Fe,Cu,Sb,S

Relationship of Maucherite to other Species

3.11.1HeazlewooditeNi3S2
3.11.2Godlevskite(Ni,Fe)9S8
3.11.3MilleriteNiS
3.11.4PolydymiteNi2+Ni23+S4
3.11.5VaesiteNiS2
3.11.6ShanditeNi3Pb2S2
3.11.7DonharrisiteNi8Hg3S9
3.11.8ViolariteFe2+Ni23+S4
3.11.9Pentlandite(Fe,Ni)9S8
3.11.10Bravoite(Fe,Ni)S2
3.11.11SiegeniteCoNi2S4
3.11.12FletcheriteCu(Ni,Co)2S4
3.11.13Villamaninite(Cu,Ni,Co,Fe)S2
3.11.14Mäkineniteγ-NiSe
3.11.15Sederholmitebeta-NiSe
3.11.16TrüstedtiteNi3Se4
3.11.17WilkmaniteNi3Se4
3.11.18KulleruditeNiSe2
3.11.19Penroseite(Ni,Co,Cu)Se2
3.11.20TyrrelliteCu(Co3+,Ni3+)2Se4
3.11.21ImgreiteNiTe (?)
3.11.22MeloniteNiTe2
3.11.23KitkaiteNiTeSe
3.11.24Dienerite
3.11.25OrceliteNi5-xAs2, x ~ 0.25
3.11.27NickelineNiAs
3.11.28RammelsbergiteNiAs2
3.11.29PararammelsbergiteNiAs2
3.11.30NickelskutteruditeNiAs3-x
3.11.31OregoniteNi2FeAs2
3.11.32Westerveldite(Fe,Ni,Co)As
3.11.33Langisite(Co,Ni)As
3.11.34GersdorffiteNiAsS
3.11.35JolliffeiteNiAsSe
3.11.36BreithauptiteNiSb
3.11.38UllmanniteNiSbS
3.11.39Willyamite(Co,Ni)SbS

Other Names for Maucherite

Name in Other Languages:

Other Information

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Maucherite

Reference List:
Grünling, F. (1913): Maucherit Ni3As2, ein neues Nickelmineral aus den Kobaltrücken des Mansfelder Kupferschiefers.- Centralblatt für Mineralogie, Geologie und Paläontologie, 225-226.

Palache, Charles, Harry Berman & Clifford Frondel (1944), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana Yale University 1837-1892, Volume I: Elements, Sulfides, Sulfosalts, Oxides. John Wiley and Sons, Inc., New York. 7th edition, revised and enlarged, 834pp.: 192-194.

American Mineralogist (1973): 58: 203-210.

Makovicky, E. and S. Merlino (2009), OD (order-disorder) character of the crystal structure of maucherite Ni8As11 [sic]. European J. Mineralogy 21, 855-862.

Internet Links for Maucherite

Localities for Maucherite

map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
Mineral and/or Locality  
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