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Wittichenite

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Formula:
Cu3BiS3
May contain minor Ag.
System:
Orthorhombic
Colour:
Lead grey, bronze, ...
Lustre:
Metallic
Hardness:
2 - 3
Name:
Named after its discovery locality, Neuglück Mine, Wittichen, Baden-Württemberg, Germany.
The BiS analogue of bytízite. Chemically the Bi analogue of skinnerite (pseudo-orthorhombic).


Classification of Wittichenite

Approved, 'Grandfathered' (first described prior to 1959)
2.GA.20

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
Dana 7th ed.:
3.4.8.1
3.4.8.1

3 : SULFOSALTS
4 : ø = 3
5.1.9

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

Physical Properties of Wittichenite

Metallic
Diaphaneity (Transparency):
Opaque
Colour:
Lead grey, bronze, tin-white, steel grey, yellow
Streak:
Black
Hardness (Mohs):
2 - 3
Tenacity:
Brittle
Cleavage:
None Observed
Density:
6.3 - 6.7 g/cm3 (Measured)    6.23 g/cm3 (Calculated)

Chemical Properties of Wittichenite

Formula:
Cu3BiS3

May contain minor Ag.
Elements listed in formula:
Common Impurities:
Ag

Crystallography of Wittichenite

Crystal System:
Orthorhombic
Class (H-M):
2 2 2 - Disphenoidal
Space Group:
P21 21 21
Cell Parameters:
a = 7.723 Å, b = 10.395 Å, c = 6.716 Å
Ratio:
a:b:c = 0.743 : 1 : 0.646
Unit Cell Volume:
V 539.16 ų (Calculated from Unit Cell)
Z:
4
X-Ray Powder Diffraction:
Image Loading

Radiation - Copper Kα
Data Set:
Data courtesy of RRUFF project at University of Arizona, used with permission.

Type Occurrence of Wittichenite

Relationship of Wittichenite to other Species

2.GA.05ProustiteAg3AsS3
2.GA.05PyrargyriteAg3SbS3
2.GA.10PyrostilpniteAg3SbS3
2.GA.10XanthoconiteAg3AsS3
2.GA.15SamsoniteAg4MnSb2S6
2.GA.20SkinneriteCu3SbS3
2.GA.25LapieiteNiCuSbS3
2.GA.25MückeiteNiCu(Bi,Sb)S3
2.GA.25MalyshevitePdCuBiS3
2.GA.25LisiguangitePtCuBiS3
2.GA.30AktashiteCu6Hg3As4S12
2.GA.30GruzdeviteCu6Hg3Sb4S12
2.GA.30NowackiiteCu6Zn3As4S12
2.GA.35LaffittiteAgHgAsS3
2.GA.40RouthieriteTl(Cu,Ag)(Hg,Zn)2(As,Sb)2S6
2.GA.40StalderiteTl(Cu,Ag)(Zn,Fe,Hg)2(As,Sb)2S6
2.GA.45ErniggliiteTl2SnAs2S6
2.GA.50BournonitePbCuSbS3
2.GA.50SeligmannitePbCuAsS3
2.GA.50SoučekitePbCuBi(S,Se)3
5.1.1SinneriteCu6As4S9
5.1.2TennantiteCu6[Cu4(Fe,Zn)2]As4S13
5.1.4ChalcostibiteCuSbS2
5.1.5TetrahedriteCu6[Cu4(Fe,Zn)2]Sb4S13
5.1.6GoldfielditeCu10Te4S13
5.1.7EmplectiteCuBiS2
5.1.8CuprobismutiteCu8AgBi13S24
5.1.10HodrušiteCu8Bi12S22
5.1.11GirauditeCu6[Cu4(Fe,Zn)2]As4Se13
5.1.11PermingeatiteCu3SbSe4

Other Names for Wittichenite

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 Wittichenite

Reference List:
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: 373.

Economic Geology (1947): 42: 147-160.

Acta Crystallographica: B29: 2528-2535.

Mineralogical Magazine (1979): 43: 109.

Chang, L. L. Y.; Wu, D.; Knowles, C. R. (1988): Phase relations in the system Ag2S-Cu2S-PbS-Bi2S3. Economic Geology 83, 405-418.

Internet Links for Wittichenite

mindat.org URL:
https://www.mindat.org/min-4300.html
Please feel free to link to this page.
Specimens:
The following Wittichenite specimens are currently listed for sale on minfind.com.

Localities for Wittichenite

Mineral and/or Locality  
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