IMPORTANT MESSAGE. We need your support now to keep mindat.org running. Click here to find out why.
Log InRegister
Home PageAbout MindatThe Mindat ManualHistory of MindatCopyright StatusWho We AreContact UsAdvertise on Mindat
Donate to MindatCorporate SponsorshipSponsor a PageSponsored PagesMindat AdvertisersAdvertise on Mindat
Learning CenterWhat is a mineral?The most common minerals on earthInformation for Educators
Minerals by PropertiesMinerals by ChemistryAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
StatisticsThe ElementsUsersBooks & MagazinesMineral MuseumsMineral Shows & EventsThe Mindat DirectoryDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day Gallery

Larosite

This page is currently not sponsored. Click here to sponsor this page.
Alfred Larose
Formula:
(Cu,Ag)21PbBiS13
Colour:
Pale buff (polished section)
Lustre:
Metallic
Hardness:
3 - 3½
Specific Gravity:
6.19 (Calculated)
Crystal System:
Orthorhombic
Name:
Named after Alfred LaRose (1870-1940), blacksmith and prospector who was one of the principal discoverers in 1903 of the rich silver deposits of the Cobalt area of northern Ontario, which led to a huge exploration and mining boom in the region. Two versions of the name are found in the literature, LaRose and Larose, the latter traditionally used by the family, but the former used in the naming of the mine. LaRose was inducted into the Canadian Mining Hall of Fame in 2003.
Note: Electron microbe analyses of larosite from Norway (Cook et al., 2010) gave Cu20.47Ag3.68Fe0.22Pb1.01Bi1.06S15.00 calculated on the basis of 15 S atoms.


Hide all sections | Show all sections

Classification of LarositeHide

Approved
First Published:
1972
2.LB.35

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
L : Unclassified Sulfosalts
B : With essential Pb
2.16.9.1

2 : SULFIDES
16 : Miscellaneous
5.7.43

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

Physical Properties of LarositeHide

Metallic
Transparency:
Opaque
Colour:
Pale buff (polished section)
Hardness:
3 - 3½ on Mohs scale
Density:
6.19 g/cm3 (Calculated)

Chemical Properties of LarositeHide

Formula:
(Cu,Ag)21PbBiS13

Crystallography of LarositeHide

Crystal System:
Orthorhombic
Cell Parameters:
a = 22.15 Å, b = 24.03 Å, c = 11.67 Å
Ratio:
a:b:c = 0.922 : 1 : 0.486
Unit Cell V:
6,211.53 ų (Calculated from Unit Cell)

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
3.206 (50)
2.917 (90)
2.846 (60)
2.471 (60)
2.555 (40)
2.162 (40)
1.982 (100)

Type Occurrence of LarositeHide

Place of Conservation of Type Material:
Canadian Geological Survey, Ottawa, Canada, 12126.
Reference:
Petruk, W. (1972) Larosite, a new copper-lead-bismuth sulphide. Canadian Mineralogist: 11: 886-891.

Synonyms of LarositeHide

Other Language Names for LarositeHide

German:Larosit
Simplified Chinese:硫铋铅铜矿
Spanish:Larosita
Traditional Chinese:硫鉍鉛銅礦

Related Minerals - Nickel-Strunz GroupingHide

2.LB.05MiharaiteCu4FePbBiS6Orth.
2.LB.30ArdaitePb19Sb13S35Cl7Mon.
2.LB.30LaunayiteCuPb10(Sb,As)12S20Mon.
2.LB.30MadocitePb19(Sb,As)16S43Orth.
2.LB.30PlayfairitePb16(Sb,As)19S44ClMon.
2.LB.30SorbyiteCuPb9(Sb,As)11S26Mon. 2/m : B2/m
2.LB.30SterryiteCu(Ag,Cu)3Pb19(Sb,As)22(As-As)S56Mon. 2/m
2.LB.40PetroviciteCu3HgPbBiSe5Orth.
2.LB.40MazzettiiteAg3HgPbSbTe5Orth.
2.LB.45CreraritePt2-x(Bi,Pb)11(S,Se)11Tric. 1 : P1

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

5.7.1SeligmannitePbCuAsS3Orth. mmm (2/m 2/m 2/m) : Pmmn
5.7.2BournonitePbCuSbS3Orth. mm2 : Pmn21
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.
5.7.44CupropavoniteCu0.9Ag0.5Pb0.6Bi2.5S5 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 LarositeHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Petruk, W. (1972) Larosite, a new copper-lead-bismuth sulphide. Canadian Mineralogist: 11: 886-891. [Abstract in American Mineralogist (1974) 59, 382].
Cook, N.J. Ciobanu, C.L., Pedersen, Ø.S. Langerud, T.H., Karlsen, O.A. (2010) A new occurrence of larosite from the Tinnsjå Cu–Ag deposit, Telemark county, Norway. I. paragenesis and chemical composition. Canadian Mineralogist: 48: 1569-1573.

Internet Links for LarositeHide

Localities for LarositeHide

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 ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Canada (TL)
 
  • Ontario
    • Timiskaming District
      • Cobalt-Gowganda region
        • Cobalt area
          • Coleman Township
PETRUK, W. (1972): Larosite, a new copper-lead-bismuth sulphide. Canadian Mineralogist 11, 886-891. Abstracted in: American Mineralogist (1974): 59, 382.
China
 
  • Guangdong Province
    • Meizhou Prefecture
      • Mei Co.
Binghui Chen, Rui Guo, and Shouyun Yu (1994): Geology and Prospecting 30(3), 20-25
  • Henan Province
    • Luoyang Prefecture
      • Song Co.
        • Qiyugou ore field
Shihua Li and Jinzhong Qi (2000): Gold Geology 19(2); Li Li and Jinzhong Qi (2002): Mineral Deposits 21(suppl.), 625-628
Norway
 
  • Telemark
    • Tinn
      • Tinnsjå (Tinnsjø; Lake Tinn)
Nigel J. Cook, Cristiana L. Ciobanu, Øyvind S. Pedersen, Thor H. Langerud, and Ove A. Karlsen (2010): A new occurrence of larosite from the Tinnsjå Cu–Ag deposit, Telemark county, Norway. I. paragenesis and chemical composition. Can. Mineral. 48, 1569-1573.
        • Tinnsjå Cu-Ag prospect (Hovin deposit; Vasstveit deposit)
Nigel J. Cook, Cristiana L. Ciobanu, Øyvind S. Pedersen, Thor H. Langerud, and Ove A. Karlsen (2010): A new occurrence of larosite from the Tinnsjå Cu–Ag deposit, Telemark county, Norway. I. Paragenesis and chemical composition. Can. Mineral. 48, 1569-1573.
USA
 
  • Montana
    • Silver Bow Co.
      • Butte District (Summit Valley District)
        • Butte
Gammons, C. H., Szarkowski, J., & Stevenson, R. (2016) New investigations of the mineralogy of silver in the world-class porphyry-lode deposits of Butte, MT. Mining engineering Magazine website
Mineral and/or Locality  
Mindat.org is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2018, 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: October 18, 2018 10:17:30 Page generated: September 14, 2018 13:28:32
Go to top of page