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Emplectite

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Formula:
CuBiS2
System:
Orthorhombic
Colour:
Greyish to tin-white
Lustre:
Metallic
Hardness:
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

Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
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)
3.7.5.2

3 : SULFOSALTS
7 : ø = 2
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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First Recorded Occurrence of Emplectite

Year of Discovery:
1817

Occurrences of Emplectite

Geological Setting:
Moderate temperature hydrothermal veins

Physical Properties of Emplectite

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:
6.38 g/cm3 (Measured)    6.393 g/cm3 (Calculated)

Crystallography of Emplectite

Crystal System:
Orthorhombic
Class (H-M):
mmm (2/m 2/m 2/m) - Dipyramidal
Space Group:
Pmna
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:
CuBiS2
Essential elements:
All elements listed in formula:

Relationship of Emplectite to other Species

2.HA.05ChalcostibiteCuSbS2
2.HA.10MiargyriteAgSbS2
2.HA.20BerthieriteFeSb2S4
2.HA.20GaravelliteFeSbBiS4
2.HA.20CleriteMnSb2S4
2.HA.25AramayoiteAg(Sb,Bi)S2
2.HA.25BaumstarkiteAgSbS2
5.1.1SinneriteCu6As4S9
5.1.2TennantiteCu6[Cu4(Fe,Zn)2]As4S13
5.1.4ChalcostibiteCuSbS2
5.1.5TetrahedriteCu6[Cu4(Fe,Zn)2]Sb4S13
5.1.6GoldfielditeCu12(Te,Sb,As)4S13
5.1.8CuprobismutiteCu8AgBi12S24
5.1.9WitticheniteCu3BiS3
5.1.10HodrušiteCu8Bi12S22
5.1.11GirauditeCu6[Cu4(Fe,Zn)2]As4Se13
5.1.11PermingeatiteCu3SbSe4

Other Names for Emplectite

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 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

Localities for Emplectite

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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