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Bournonite

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Formula:
PbCuSbS3
Colour:
Steel-gray
Lustre:
Metallic
Hardness:
2½ - 3
Specific Gravity:
5.83
Crystal System:
Orthorhombic
Name:
Named in 1805 by Robert Jameson in honor of Jacques-Louis, Comte de Bournon [21 January 1751 - 24 August 1825], crystallographer and mineralogist. Count de Bournon left France after the French Revolution to England and did not return to France until the Bourbon Restoration in 1814. Count de Bournon was an active mineralogist and researched the composition of meteorites (as early as 1802), but his research in mineralogical classification is his best-known contribution and he authored several detailed mineral collection catalogs featuring his classifications. Count de Bournon was one of the founders of the Geological Society in 1807. Count de Bournon named fibrolite.
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Classification of BournoniteHide

Approved, 'Grandfathered' (first described prior to 1959)
2.GA.50

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
3.4.3.2

3 : SULFOSALTS
4 : ø = 3
5.7.2

5 : Sulphosalts - Sulpharsenites and Sulphobismuthites (those containing Sn, Ge,or V are in Section 6)
7 : Sulpharsenites etc. of Pb and other metals

Pronounciation of BournoniteHide

Pronounciation:
PlayRecorded byCountry
Jolyon & Katya RalphUnited Kingdom

Physical Properties of BournoniteHide

Metallic
Transparency:
Opaque
Colour:
Steel-gray
Streak:
Steel-gray
Hardness:
2½ - 3 on Mohs scale
Hardness:
VHN100=176 - 205 kg/mm2 - Vickers
Hardness Data:
Measured
Tenacity:
Brittle
Cleavage:
Imperfect/Fair
Imperfect on {010}, less perfect on {100}{001}
Fracture:
Irregular/Uneven, Sub-Conchoidal
Density:
5.83 g/cm3 (Measured)    5.84 g/cm3 (Calculated)

Optical Data of BournoniteHide

Type:
Anisotropic
Anisotropism:
Weak
Colour in reflected light:
White
Pleochroism:
Weak
Comments:
Very weak.

Chemical Properties of BournoniteHide

Formula:
PbCuSbS3
IMA Formula:
CuPbSbS3
Common Impurities:
As,Ag,Fe,Zn,Mn,Ni

Crystallography of BournoniteHide

Crystal System:
Orthorhombic
Class (H-M):
mm2 - Pyramidal
Space Group:
Pmn21
Cell Parameters:
a = 8.153(1) Å, b = 8.692(3) Å, c = 7.793(2) Å
Ratio:
a:b:c = 0.938 : 1 : 0.897
Unit Cell V:
552.26 ų (Calculated from Unit Cell)
Z:
4
Morphology:
Crystals usually short prismatic to tabular [001]. Crystals often form sub-parallel aggregates. Faces {hk0} striated [001], {h01} striated [010], {100} lustrous and striated [010], {010} usually smooth and lustrous.
Twinning:
On {110} very common often repeated, forming cruciform or wheel-like aggregates ("cogwheels"). Twin gliding: x1 {110}, δ2 [110]. Usually exhibits polysynthetic twinning on {110}, in part due to deformation.

Crystallographic forms of BournoniteHide

Crystal Atlas:
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Bournonite no.98 - Goldschmidt (1913-1926)
Bournonite - Repeated contact twin on {110}
Bournonite - Contact twin on {110}
Bournonite - Tabular {001}
3d models and HTML5 code kindly provided by www.smorf.nl.

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X-Ray Powder DiffractionHide

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

Type Occurrence of BournoniteHide

Synonyms of BournoniteHide

Other Language Names for BournoniteHide

Relationship of Bournonite to other SpeciesHide

Other Members of this group:
SeligmannitePbCuAsS3Orth. mmm (2/m 2/m 2/m) : Pmmn
SoučekitePbCuBi(S,Se)3Orth.
Forms a series with:

Common AssociatesHide

Associated Minerals Based on Photo Data:
Quartz479 photos of Bournonite associated with Quartz on mindat.org.
Pyrite305 photos of Bournonite associated with Pyrite on mindat.org.
Sphalerite198 photos of Bournonite associated with Sphalerite on mindat.org.
Siderite170 photos of Bournonite associated with Siderite on mindat.org.
Calcite116 photos of Bournonite associated with Calcite on mindat.org.
Chalcopyrite100 photos of Bournonite associated with Chalcopyrite on mindat.org.
Baryte80 photos of Bournonite associated with Baryte on mindat.org.
Dolomite56 photos of Bournonite associated with Dolomite on mindat.org.
Galena54 photos of Bournonite associated with Galena on mindat.org.
Tetrahedrite47 photos of Bournonite associated with Tetrahedrite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

2.GA.05ProustiteAg3AsS3Trig. 3m (3 2/m) : R3c
2.GA.05PyrargyriteAg3SbS3Trig. 3m : R3c
2.GA.10PyrostilpniteAg3SbS3Mon.
2.GA.10XanthoconiteAg3AsS3Mon. 2/m : B2/b
2.GA.15SamsoniteAg4MnSb2S6Mon. 2/m : P21/m
2.GA.20SkinneriteCu3SbS3Mon. 2/m : P21/b
2.GA.20WitticheniteCu3BiS3Orth. 2 2 2 : P21 21 21
2.GA.25LapieiteNiCuSbS3Orth.
2.GA.25MückeiteNiCu(Bi,Sb)S3Orth. 2 2 2 : P21 21 21
2.GA.25MalyshevitePdCuBiS3Orth. mmm (2/m 2/m 2/m) : Pmmm
2.GA.25LisiguangitePtCuBiS3Orth. 2 2 2 : P21 21 21
2.GA.30AktashiteCu6Hg3As4S12Trig. 3 : R3
2.GA.30GruzdeviteCu6Hg3Sb4S12Trig.
2.GA.30NowackiiteCu6Zn3As4S12Trig. 3 : R3
2.GA.35LaffittiteAgHgAsS3Mon.
2.GA.40RouthieriteTl(Cu,Ag)(Hg,Zn)2(As,Sb)2S6Tet. 4 2m : I4 2m
2.GA.40StalderiteTl(Cu,Ag)(Zn,Fe,Hg)2(As,Sb)2S6Tet.
2.GA.45ErniggliiteTl2SnAs2S6Trig.
2.GA.50SeligmannitePbCuAsS3Orth. mmm (2/m 2/m 2/m) : Pmmn
2.GA.50SoučekitePbCuBi(S,Se)3Orth.

Related Minerals - Dana Grouping (8th Ed.)Hide

3.4.3.1SeligmannitePbCuAsS3Orth. mmm (2/m 2/m 2/m) : Pmmn
3.4.3.3SoučekitePbCuBi(S,Se)3Orth.

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

5.7.1SeligmannitePbCuAsS3Orth. mmm (2/m 2/m 2/m) : Pmmn
5.7.3MeneghinitePb13CuSb7S24Orth. mmm (2/m 2/m 2/m)
5.7.4GladitePbCuBi5S9Orth. mmm (2/m 2/m 2/m)
5.7.5LindströmitePb3Cu3Bi7S15Orth. mmm (2/m 2/m 2/m)
5.7.6KrupkaitePbCuBi3S6Orth.
5.7.7HammaritePb2Cu2Bi4S9Orth.
5.7.8FriedrichitePb5Cu5Bi7S18Orth. mm2
5.7.9AikinitePbCuBiS3Orth. mmm (2/m 2/m 2/m) : Pnma
5.7.10NuffielditeCu1.4Pb2.4Bi2.4Sb0.2S7Orth.
5.7.11JaskólskiiteCuxPb2+x(Sb,Bi)2-xS5 (x ~ 0.15)Orth.
5.7.12TintinaitePb22Cu4(Sb,Bi)30S69Orth. mmm (2/m 2/m 2/m) : Pnnm
5.7.13KobellitePb22Cu4(Bi,Sb)30S69Orth. mmm (2/m 2/m 2/m) : Pnnm
5.7.14ProuditeCuPb7.5Bi9.33(S,Se)22Mon. 2/m : B2/m
5.7.15NordströmiteCuPb3Bi7(Se4S10)Mon.
5.7.16WatkinsoniteCu2PbBi4(Se,S,Te)8Mon.
5.7.17PekoitePbCuBi11(S,Se)18Orth.
5.7.18PetroviciteCu3HgPbBiSe5Orth.
5.7.19Eclarite(Cu,Fe)Pb9Bi12S28Orth. mmm (2/m 2/m 2/m) : Pnma
5.7.20MarriteAgPbAsS3Mon. 2/m : P21/b
5.7.21ArgentobaumhaueriteAg1.5Pb22As33.5S72Tric. 1 : P1
5.7.22AndoriteAgPbSb3S6Orth. mmm (2/m 2/m 2/m)
5.7.23RamdohritePb5.9Fe0.1Mn0.1In0.1Cd0.2Ag2.8Sb10.8S24Mon. 2/m
5.7.24RoshchiniteAg19Pb10Sb51S96Orth.
5.7.25OurayiteAg3Pb4Bi5S13Orth.
5.7.26EskimoiteAg7Pb10Bi15S36Mon.
5.7.27FizélyiteAg5Pb14Sb21S48 Mon. 2/m
5.7.28OwyheeiteAg3+xPb10-2xSb11+xS28, -0.13 < x > +0.20Mon. 2/m : P21/b
5.7.29FreieslebeniteAgPbSbS3Mon. 2/m : P21/b
5.7.30DiaphoriteAg3Pb2Sb3S8Mon. 2/m : P21/b
5.7.31SterryiteCu(Ag,Cu)3Pb19(Sb,As)22(As-As)S56Mon. 2/m
5.7.32VikingiteAg5Pb8Bi13S30Mon. 2/m : B2/m
5.7.33ZoubekiteAgPb4Sb4S10Orth.
5.7.34SchirmeritePbAgBi3S6 - Pb3Ag1.5Bi3.5S9Orth.
5.7.36GustaviteAgPbBi3S6Orth. mmm (2/m 2/m 2/m)
5.7.37KitaibeliteAg10PbBi30S51
5.7.38TreasuriteAg7Pb6Bi15S32Mon.
5.7.39BenjaminiteAg3Bi7S12Mon. 2/m : B2/m
5.7.40Lengenbachite Ag4Cu2Pb18As12S39Tric.
5.7.41BerryiteCu3Ag2Pb3Bi7S16Mon. 2/m : P21/m
5.7.42NeyiteAg2Cu6Pb25Bi26S68Mon.
5.7.43Larosite(Cu,Ag)21(Pb,Bi)2S13Orth.
5.7.44CupropavoniteCu0.9Ag0.5Pb0.6Bi2.5S5 Mon. 2/m : B2/m
5.7.45PadĕraiteCu7[(Cu,Ag)0.33Pb1.33Bi11.33]S22Mon.
5.7.46RayitePb8(Ag,Tl)2Sb8S21Mon.
5.7.47RathiteAg2Pb12-xTlx/2As18+x/2S40Mon. 2/m : P21/b
5.7.48HatchiteAgTlPbAs2S5Tric. 1 : P1

Other InformationHide

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 BournoniteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Rashleigh (1797) 1: 34, pl. xix.
Bournon (1804) Royal Society of London, Phil. Trans.: 30.
Hatchett (1804) Royal Society of London, Phil. Trans.: 63.
Jameson (1805) 2: 579.
Jameson (1816) 3: 372.
Hintze (1904) 1(1): 1126.
Schneiderhöhn and Ramdohr (1931).
Oftedal (1932) Zs. Kr.: 83: 157.
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: 406-410.
Zeitschrift für Kristallographie: 131: 397-417.
Kharbish, S., Giester, G. & Beran, A. (2010) Contribution to the crystal structures of tennantite and bournonite. Neues Jahrbuch für Mineralogie, Abhandlungen 187, 159-166.

Internet Links for BournoniteHide

Localities for BournoniteHide

This 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.

Locality ListShow

Mineral and/or Locality  
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