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Emplectite

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Formula:
CuBiS
 
2
System:OrthorhombicColour:Greyish to tin-white
Lustre:MetallicHardness:2
Name:From Greek έμπλεκτος, "emplektos", entwined or interwoven, for the intimate association with quartz at the type locality
This page provides mineralogical data about Emplectite.

Classification of Emplectite

IMA status:Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
Strunz 8th edition ID:2/E.04-20
Nickel-Strunz 10th (pending) edition ID:2.HA.05

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
H : Sulfosalts of SnS archetype
A : With Cu, Ag, Fe (without Pb)
Dana 8th edition ID:3.7.5.2

3 : SULFOSALTS
7 : ø = 2
Hey's CIM Ref.:5.1.7

5 : Sulphosalts - Sulpharsenites and Sulphobismuthites (those containing Sn, Ge,or V are in Section 6)
1 : Sulpharsenites etc. of Cu
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Type Occurrence of Emplectite

Type Locality:Tannenbaum Mine, Antonsthal, Breitenbrunn District, Erzgebirge, Saxony, Germany
Year of Discovery:1817

Occurrences of Emplectite

Geological Setting:Moderate temperature hydrothermal veins

Physical Properties of Emplectite

Lustre:Metallic
Diaphaneity (Transparency):Opaque
Colour:Greyish to tin-white
Hardness (Mohs):2
Tenacity:Brittle
Cleavage:Perfect
{010} Perfect; {001} less so.
Fracture:Irregular/Uneven, Conchoidal
Density (measured):6.38 g/cm3
Density (calculated):6.393 g/cm3

Crystallography of Emplectite

Crystal System:Orthorhombic
Class (H-M):mmm (2/m 2/m 2/m) - Dipyramidal
Space Group:Pmna {P2/m 2/n 21/a}
Space Group Setting:Pmna
Cell Parameters:a = 6.1426(3) Å, b = 3.9189(4) Å, c = 14.5282(7) Å
Ratio:a:b:c = 1.567 : 1 : 3.707
Unit Cell Volume:V 349.73 ų (Calculated from Unit Cell)
Z:4
Morphology:Prismatic, striated [001], flattened {010}.
Twinning:Contact twinning (observed in polished sections).

Optical Data of Emplectite

Type:Anisotropic
Anisotropism:Strong
Colour in reflected light:Light yellow
Pleochroism:Weak

Chemical Properties of Emplectite

Formula:
CuBiS
 
2
Simplified for copy/paste:CuBiS2
Essential elements:Bi, Cu, S
All elements listed in formula:Bi, Cu, S

Relationship of Emplectite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
2.HA.05Chalcostibite
CuSbS
 
2
2.HA.10Miargyrite
AgSbS
 
2
2.HA.20Berthierite
FeSb
 
2
S
 
4
2.HA.20Garavellite
FeSbBiS
 
4
2.HA.20Clerite
MnSb
 
2
S
 
4
2.HA.25Aramayoite
Ag(Sb,Bi)S
 
2
2.HA.25Baumstarkite
AgSbS
 
2
Related Minerals - Hey's Index Grouping:

- +
5.1.1Sinnerite
Cu
 
6
As
 
4
S
 
9
5.1.2Tennantite
Cu
 
6
[Cu
 
4
(Fe,Zn)
 
2
]As
 
4
S
 
13
5.1.4Chalcostibite
CuSbS
 
2
5.1.5Tetrahedrite
Cu
 
6
[Cu
 
4
(Fe,Zn)
 
2
]Sb
 
4
S
 
13
5.1.6Goldfieldite
Cu
 
12
(Te,Sb,As)
 
4
S
 
13
5.1.8Cuprobismutite
Cu
 
8
AgBi
 
12
S
 
24
5.1.9Wittichenite
Cu
 
3
BiS
 
3
5.1.10Hodrušite
Cu
 
8
Bi
 
12
S
 
22
5.1.11Giraudite
Cu
 
6
[Cu
 
4
(Fe,Zn)
 
2
]As
 
4
Se
 
13
5.1.11Permingeatite
Cu
 
3
SbSe
 
4

Other Names for Emplectite

Synonyms:
Strahliges WismuthkupfererzTanneniteTermanite
Other Languages:
German:Emplectit
Emplektit
Hemichalcit
Kupferwismutglanz (of Schneider)
Tannenit
Termanit
Russian:Эмплектит
Simplified Chinese:硫铜铋矿
恩硫铋铜矿
Spanish:Emplectita
Tannenita
Termanita

Other Information

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

References for Emplectite

Reference List:

- +
Selb (1817) Die oryktognostische Mineralien-Sammlung des Herrn Oberbergrathes Selb.- Taschenbuch für die gesammte Mineralogie 11, p. 441 and 451-453.

Kenngott (1853): 125.

Schneider (1853), Ann. Phys.: 90: 166.

Dana (1854): 73.

Kobell (1864): 600.

Dana (1868): 86

Hillebrand (1884), American Journal of Science: 27: 355.

Zeitschrift für Kristallographie: 141: 387-402.

Palache, C. and Peacock (1933), American Mineralogist: 18: 277.

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: 435-437.

Internet Links for Emplectite

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  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Emplectite details from Handbook of Mineralogy (PDF)
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