Help mindat.org|Log In|Register|
Home PageMindat NewsThe Mindat ManualHistory of MindatCopyright StatusManagement TeamContact UsAdvertise on Mindat
Donate to MindatSponsor a PageSponsored PagesTop Available PagesMindat AdvertisersAdvertise on MindatThe Mindat Store
Minerals by PropertiesMinerals by ChemistryRandom MineralSearch by minIDLocalities Near MeSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportAdd Glossary Item
StatisticsMember ListBooks & MagazinesMineral Shows & EventsThe Mindat DirectoryHow to Link to MindatDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day Gallery

Bournonite

This page is currently not sponsored. Click here to sponsor this page.
Formula:
PbCuSbS3
System:
Orthorhombic
Colour:
Steel-gray
Hardness:
2½ - 3
Name:
Named in 1805 by Robert Jameson in honor Jacques Louis Comte de Bournon [January 21, 1751 - 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.

Classification of Bournonite

Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
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
mindat.org URL:
http://www.mindat.org/min-741.html
Please feel free to link to this page.

First Recorded Occurrence of Bournonite

Year of Discovery:
1805

Occurrences of Bournonite

Geological Setting:
Moderate temperature hydrothermal veins.

Physical Properties of Bournonite

Metallic
Diaphaneity (Transparency):
Opaque
Colour:
Steel-gray
Streak:
Steel-gray
Hardness (Mohs):
2½ - 3
Hardness (Vickers):
VHN100=176 - 205 kg/mm2
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)

Crystallography of Bournonite

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 Volume:
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 Bournonite

Crystal Atlas:
Image Loading
Click on an icon to view
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.

Toggle
Edge Lines | Miller Indicies | Axes

Transparency
Opaque | Translucent | Transparent

View
Along a-axis | Along b-axis | Along c-axis | Start rotation | Stop rotation
X-Ray Powder Diffraction:
Image Loading

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

Optical Data of Bournonite

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

Chemical Properties of Bournonite

Formula:
PbCuSbS3
Essential elements:
All elements listed in formula:
Common Impurities:
As,Ag,Fe,Zn,Mn,Ni

Relationship of Bournonite to other Species

Series:
Forms a series with Seligmannite (see here)
Other Members of Group:
SeligmannitePbCuAsS3
SoučekitePbCuBi(S,Se)3
2.GA.05ProustiteAg3AsS3
2.GA.05PyrargyriteAg3SbS3
2.GA.10PyrostilpniteAg3SbS3
2.GA.10XanthoconiteAg3AsS3
2.GA.15SamsoniteAg4MnSb2S6
2.GA.20SkinneriteCu3SbS3
2.GA.20WitticheniteCu3BiS3
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.50SeligmannitePbCuAsS3
2.GA.50SoučekitePbCuBi(S,Se)3
5.7.1SeligmannitePbCuAsS3
5.7.3MeneghinitePb13CuSb7S24
5.7.4GladitePbCuBi5S9
5.7.5LindströmitePb3Cu3Bi7S15
5.7.6KrupkaitePbCuBi3S6
5.7.7HammaritePb2Cu2Bi4S9
5.7.8FriedrichitePb5Cu5Bi7S18
5.7.9AikinitePbCuBiS3
5.7.10NuffielditeCu1.4Pb2.4Bi2.4Sb0.2S7
5.7.11JaskólskiitePb2+xCux(Sb,Bi)2-xS6 (x = 0.2)
5.7.12TintinaitePb22Cu4(Sb,Bi)30S69
5.7.13KobellitePb22Cu4(Bi,Sb)30S69
5.7.14ProuditeCuPb7.5Bi9.33(S,Se)22
5.7.15NordströmiteCuPb3Bi7(Se4S10)
5.7.16WatkinsoniteCu2PbBi4(Se,S,Te)8
5.7.17PekoitePbCuBi11(S,Se)18
5.7.18PetroviciteCu3HgPbBiSe5
5.7.19Eclarite(Cu,Fe)Pb9Bi12S28
5.7.20MarriteAgPbAsS3
5.7.21Baumhauerite-2aPb11Ag(As,Sb)18S36
5.7.22AndoritePbAgSb3S6
5.7.23Ramdohrite(Cd,Mn,Fe)Ag5.5Pb12Sb21.5S48
5.7.24RoshchiniteAg19Pb10Sb51S96
5.7.25OurayiteAg3Pb4Bi5S13
5.7.26EskimoiteAg7Pb10Bi15S36
5.7.27FizélyiteAg5Pb14Sb21S48
5.7.28OwyheeiteAg3+xPb10-2xSb11+xS28, -0.13 < x > +0.20
5.7.29FreieslebeniteAgPbSbS3
5.7.30DiaphoriteAg3Pb2Sb3S8
5.7.31SterryiteAg2Pb10(Sb,As)12S29
5.7.32VikingiteAg5Pb8Bi13S30
5.7.33ZoubekiteAgPb4Sb4S10
5.7.34SchirmeritePbAgBi3S6 - Pb3Ag1.5Bi3.5S9
5.7.36GustaviteAg3Pb5Bi11S24
5.7.37KitaibeliteAg10PbBi30S51
5.7.38TreasuriteAg7Pb6Bi15S32
5.7.39Benjaminite(Ag,Cu)3(Bi,Pb)7S12
5.7.40Lengenbachite Ag4Cu2Pb18As12S39 ·
5.7.41BerryiteCu3Ag2Pb3Bi7S16
5.7.42NeyiteAg2Cu6Pb25Bi26S68
5.7.43Larosite(Cu,Ag)21(Pb,Bi)2S13
5.7.44CupropavoniteAgCu2PbBi5S10
5.7.45PadĕraiteCu5.9Ag1.3Pb1.6Bi11.2S22
5.7.46RayitePb8(Ag,Tl)2Sb8S21
5.7.47RathitePb8Pb4-x(Tl2As2)x(Ag2As2)As16S40
5.7.48HatchiteAgTlPbAs2S5

Other Names for Bournonite

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 Bournonite

Reference List:
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.

Internet Links for Bournonite

Specimens:
The following Bournonite specimens are currently listed for sale on minfind.com.

Localities for Bournonite

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  
Copyright © mindat.org 1993-2015, except where stated. Mindat.org relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: January 26, 2015 16:35:18 Page generated: January 23, 2015 18:12:20