Mückeite
A valid IMA mineral species
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About Mückeite
Formula:
NiCu(Bi,Sb)S3
Colour:
Light gray with an orange tint
Lustre:
Metallic
Hardness:
3½
Specific Gravity:
5.88
Crystal System:
Orthorhombic
Member of:
Name:
Named by G. Schnorrer-Köhler, U. Neumann, and T. Doering in 1989 in honor of Arno Mücke (b. 1937), Professor at the Mineralogical-Petrological Institute, University of Göttingen, Göttingen, Germany, for his work in systematic and ore mineralogy.
Unique Identifiers
Mindat ID:
2803
Long-form identifier:
mindat:1:1:2803:1
GUID
(UUID V4):
(UUID V4):
596026d8-37fc-4f8e-a7de-405a238876fb
IMA Classification of Mückeite
Approved
IMA Formula:
CuNiBiS3
First published:
1989
Classification of Mückeite
2.GA.25
2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
G : Sulfarsenites, sulfantimonites, sulfbismuthites
A : Neso-sulfarsenites, etc. without additional S
2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
G : Sulfarsenites, sulfantimonites, sulfbismuthites
A : Neso-sulfarsenites, etc. without additional S
3.4.4.2
3 : SULFOSALTS
4 : ø = 3
3 : SULFOSALTS
4 : ø = 3
5.8.18
5 : Sulphosalts - Sulpharsenites and Sulphobismuthites (those containing Sn, Ge,or V are in Section 6)
8 : Sulpharsenites etc. of Mn, Fe, Co and Ni
5 : Sulphosalts - Sulpharsenites and Sulphobismuthites (those containing Sn, Ge,or V are in Section 6)
8 : Sulpharsenites etc. of Mn, Fe, Co and Ni
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
Symbol | Source | Reference |
---|---|---|
Müc | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Mückeite
Metallic
Transparency:
Opaque
Colour:
Light gray with an orange tint
Streak:
Gray-black
Hardness:
3½ on Mohs scale
Hardness:
VHN100=136 - 165 kg/mm2 - Vickers
Hardness Data:
Measured
Cleavage:
Very Good
Very good {010}, good {001}
Very good {010}, good {001}
Density:
5.88 g/cm3 (Measured) 6.07 g/cm3 (Calculated)
Comment:
Measured value is low due to intergrown sulfides.
Optical Data of Mückeite
Anisotropism:
Weak in air, stronger in oil
Reflectivity:
Wavelength | R1 | R2 |
---|---|---|
470nm | 35.7% | 36.4% |
546nm | 34.1% | 39.0% |
589nm | 39.8% | 40.2% |
650nm | 40.9% | 42.3% |
Graph shows reflectance levels at different wavelengths (in nm). Top of box is 100%. Peak reflectance is 42.3%.
R1 shown in black, R2 shown in red
Colour in reflected light:
Creamy gray to light gray with a yellow-brown tint in air, olive-tinted gray to yellow-brown in oil.
Pleochroism:
Visible
Comments:
Distinct in air and strong in oil.
Chemistry of Mückeite
Mindat Formula:
NiCu(Bi,Sb)S3
Crystallography of Mückeite
Crystal System:
Orthorhombic
Class (H-M):
2 2 2 - Disphenoidal
Space Group:
P21 21 21
Cell Parameters:
a = 7.51 Å, b = 12.55 Å, c = 4.88 Å
Ratio:
a:b:c = 0.598 : 1 : 0.389
Unit Cell V:
459.94 ų (Calculated from Unit Cell)
Z:
4
Morphology:
Tabular {010}, elongate [100], showing {100}, {010}, {001}, {101}, and another (hk0).
Comment:
Ranges given are: a = 7.509(2)-7.514(3), b = 12.551(2)-12.557(6), c = 4.877(1)-4.8880(2) Å.
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
3.177 Å | (80) |
2.975 Å | (100) |
2.895 Å | (40) |
2.232 Å | (30) |
2.159 Å | (30) |
2.087 Å | (60) |
1.863 Å | (50) |
1.837 Å | (70) |
Geological Environment
Paragenetic Mode(s):
Paragenetic Mode | Earliest Age (Ga) |
---|---|
High-? alteration and/or metamorphism | |
33 : Minerals deposited by hydrothermal metal-rich fluids (see also [#12]) |
Type Occurrence of Mückeite
General Appearance of Type Material:
Subhedral to euhedral crystals up to 1 mm long.
Place of Conservation of Type Material:
Göttingen University, Göttingen, Germany.
Tübingen University, Tübingen, Germany.
Tübingen University, Tübingen, Germany.
Geological Setting of Type Material:
In dump material at a polymetallic hydrothermal deposit, topotactically relacing lapieite.
Associated Minerals at Type Locality:
Reference:
Schnorrer-Köhler, G., Neumann, U., Doering, T. (1989) Mückeite, CuNiS3, a new mineral from the Grüne Au mine, Schutzbach/Siegerland. Neues Jahrbuch für Mineralogie, Monatshefte: 5: 193-200.
Synonyms of Mückeite
Other Language Names for Mückeite
Relationship of Mückeite to other Species
Member of:
Other Members of this group:
Lapieite | NiCuSbS3 | Orth. 2 2 2 : P21 21 21 |
Lisiguangite | PtCuBiS3 | Orth. 2 2 2 : P21 21 21 |
Malyshevite | PdCuBiS3 | Orth. mmm (2/m 2/m 2/m) : Pmmm |
Roterbärite | PdBiCuSe3 | Orth. 2 2 2 : P21 21 21 |
Related Minerals - Strunz-mindat Grouping
2.GA. | Arsiccioite | AgHg2Tl(As,Sb)2S6 |
2.GA. | Eckerite | Ag2CuAsS3 |
2.GA. | Pyradoketosite | Ag3SbS3 |
2.GA.05 | Proustite | Ag3AsS3 |
2.GA.05 | Pyrargyrite | Ag3SbS3 |
2.GA.10 | Pyrostilpnite | Ag3SbS3 |
2.GA.10 | Xanthoconite | Ag3AsS3 |
2.GA.15 | Samsonite | Ag4MnSb2S6 |
2.GA.20 | Skinnerite | Cu3SbS3 |
2.GA.20 | Wittichenite | Cu3BiS3 |
2.GA.20 | Bytízite | Cu3SbSe3 |
2.GA.25 | Lapieite | NiCuSbS3 |
2.GA.25 | Malyshevite | PdCuBiS3 |
2.GA.25 | Lisiguangite | PtCuBiS3 |
2.GA.25 | Roterbärite | PdBiCuSe3 |
2.GA.30 | Aktashite | Cu6Hg3As4S12 |
2.GA.30 | Gruzdevite | Cu6Hg3Sb4S12 |
2.GA.30 | Nowackiite | Cu6Zn3As4S12 |
2.GA.30 | Zhengminghuaite | Cu6Fe3As4S12 |
2.GA.35 | Laffittite | AgHgAsS3 |
2.GA.40 | Routhierite | Tl(Cu,Ag)(Hg,Zn)2(As,Sb)2S6 |
2.GA.40 | Stalderite | Tl(Cu,Ag)(Zn,Fe,Hg)2(As,Sb)2S6 |
2.GA.40 | Ralphcannonite | AgZn2TlAs2S6 |
2.GA.40 | Ferrostalderite | CuFe2TlAs2S6 |
2.GA.40 | Unnamed (Ag-Fe endmember of Routhierite Group) | AgFe2TlAs2S6 |
2.GA.45 | Erniggliite | Tl2SnAs2S6 |
2.GA.50 | Bournonite | PbCuSbS3 |
2.GA.50 | Seligmannite | PbCuAsS3 |
2.GA.50 | Součekite | PbCuBi(S,Se)3 |
2.GA.50 | Unnamed (Pb-Cu-Bi Selenide) | PbCuBiSe3 |
2.GA.50 | Cerromojonite | CuPbBiSe3 |
2.GA.55 | Eldragónite | Cu6BiSe4(Se2) |
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.
Internet Links for Mückeite
mindat.org URL:
https://www.mindat.org/min-2803.html
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Please feel free to link to this page.
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References for Mückeite
Reference List:
Localities for Mückeite
Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
ⓘ - Click for references and further information on this occurrence.
? - Indicates mineral may be doubtful at this locality.
- Good crystals or important locality for species.
- World class for species or very significant.
(TL) - Type Locality for a valid mineral species.
(FRL) - First Recorded Locality for everything else (eg varieties).
Struck out - Mineral was erroneously reported from this locality.
Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).
All localities listed without proper references should be considered as questionable.
All localities listed without proper references should be considered as questionable.
Germany (TL) | |
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Grüneau Mine, Schutzbach, Daaden-Herdorf, Altenkirchen, Rhineland-Palatinate, Germany