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

Cosalite

This page is currently not sponsored. Click here to sponsor this page.
Formula:
Pb2Bi2S5
May contain minor Cu.
System:
Orthorhombic
Colour:
Grey
Hardness:
2½ - 3
Name:
From the locality at the Cosala Mine, Sinaloa, Mexico.
Appears to contain Cu as an essential(?) constituent, according to Clark (1993) ("Hey's Mineral Index") and Zak et al. (1992).

Classification of Cosalite

Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
2.JB.10

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
J : Sulfosalts of PbS archetype
B : Galena derivatives, with Pb
3.5.9.1

3 : SULFOSALTS
5 : 2.5 < ø < 3
5.6.24

5 : Sulphosalts - Sulpharsenites and Sulphobismuthites (those containing Sn, Ge,or V are in Section 6)
6 : Sulpharsenites etc. of Pb alone
mindat.org URL:
http://www.mindat.org/min-1139.html
Please feel free to link to this page.

First Recorded Occurrence of Cosalite

Year of Discovery:
1868

Occurrences of Cosalite

Geological Setting:
Moderate temperature hydrothermal veins, contact metasomatic deposits, epithermal replacements, pegmatites.

Physical Properties of Cosalite

Metallic
Diaphaneity (Transparency):
Opaque
Colour:
Grey
Streak:
Black
Hardness (Mohs):
2½ - 3
Cleavage:
Distinct/Good
Very rare
Fracture:
Irregular/Uneven
Density:
6.86 - 6.99 g/cm3 (Measured)    7.12 g/cm3 (Calculated)

Crystallography of Cosalite

Crystal System:
Orthorhombic
Class (H-M):
mmm (2/m 2/m 2/m) - Dipyramidal
Cell Parameters:
a = 19.09Å, b = 23.87Å, c = 4.055Å
Ratio:
a:b:c = 0.8 : 1 : 0.17
Unit Cell Volume:
V 1,847.78 ų (Calculated from Unit Cell)
Z:
8
Morphology:
Prismatic [001]. Frequently elongated to needle-like and capillary forms. Usually massive., in radiating prismatic, fibrous, or feathery aggregates.

Optical Data of Cosalite

Type:
Anisotropic
Anisotropism:
Very weak, distinct in oil
Colour in reflected light:
White with trace of cream
Pleochroism:
Weak
Comments:
Very weak.

Chemical Properties of Cosalite

Formula:
Pb2Bi2S5

May contain minor Cu.
Essential elements:
All elements listed in formula:
Common Impurities:
Cu,Fe

Relationship of Cosalite to other Species

2.JB.05DiaphoriteAg3Pb2Sb3S8
2.JB.15FreieslebeniteAgPbSbS3
2.JB.15MarriteAgPbAsS3
2.JB.20CannizzaritePb4Bi6S13
2.JB.20WittitePb9Bi12(S,Se)27
2.JB.25aJunoiteCu2Pb3Bi8(S,Se)16
2.JB.25iNeyiteAg2Cu6Pb25Bi26S68
2.JB.25cNordströmiteCuPb3Bi7(Se4S10)
2.JB.25gNuffielditeCu1.4Pb2.4Bi2.4Sb0.2S7
2.JB.25dProuditeCuPb7.5Bi9.33(S,Se)22
2.JB.25hWeibullitePb5Bi8Se7S11
2.JB.25bFelbertaliteCu2Pb6Bi8S19
2.JB.25jRouxeliteCu2HgPb23Sb27S65.5
2.JB.25fÁngelaiteCu2AgPbBiS4
2.JB.25iCuproneyiteCu7Pb27Bi25S68
2.JB.30aGeocronitePb14(Sb,As)6S23
2.JB.30aJordanitePb14(As,Sb)6S23
2.JB.30bKirkiitePb10Bi3As3S19
2.JB.30cTsugaruitePb4As2S7
2.JB.35cPillaitePb9Sb10S23ClO0.5
2.JB.35aZinkenitePb9Sb22S42
2.JB.35bScainiitePb14Sb30S54O5
2.JB.35dPellouxite(Cu,Ag)Pb10Sb12S27O(Cl,S)0.6
2.JB.35fTubuliteAg2Pb22Sb20S53
2.JB.35eChovanitePb15-2xSb14+2xS36Ox (x ~ 0.2)
2.JB.40bAschamalmitePb6Bi2S9
2.JB.40aBursaitePb5Bi4S11 (?)
2.JB.40bEskimoiteAg7Pb10Bi15S36
2.JB.40aFizélyiteAg5Pb14Sb21S48
2.JB.40aGustaviteAg3Pb5Bi11S24
2.JB.40aLillianitePb3-2xAgxBi2+xS6
2.JB.40cOurayiteAg3Pb4Bi5S13
2.JB.40aRamdohrite(Cd,Mn,Fe)Ag5.5Pb12Sb21.5S48
2.JB.40aRoshchiniteAg19Pb10Sb51S96
2.JB.40dSchirmeritePbAgBi3S6 - Pb3Ag1.5Bi3.5S9
2.JB.40aTreasuriteAg7Pb6Bi15S32
2.JB.40aUchucchacuaiteAgMnPb3Sb5S12
2.JB.40eUstarasitePb(Bi,Sb)6S10 (?)
2.JB.40aVikingiteAg5Pb8Bi13S30
2.JB.40aXilingolitePb3Bi2S6
2.JB.40bHeyrovskýitePb10AgBi5S18
2.JB.40UM1988-05-S:AgBiCuHgPb(Hg,Ag,Cu,Pb)5Pb5Bi11S27
2.JB.40UM1988-06-S:AgBiCuHgPb(Pb,Hg)12(Cu,Ag)3(Bi,Sb)10(S,Te)27
2.JB.40aAndorite IVPb18Ag15Sb47S96
2.JB.55GratonitePb9As4S15
2.JB.60MarrucciiteHg3Pb16Sb18S46
2.JB.65VurroitePb20Sn2(Bi,As)22S54Cl6
5.6.1SartoritePbAs2S4
5.6.2DufrénoysitePb2As2S5
5.6.3LiveingitePb9As13S28
5.6.4BaumhaueritePb12As16S36
5.6.5GratonitePb9As4S15
5.6.6JordanitePb14(As,Sb)6S23
5.6.7FülöppitePb3Sb8S15
5.6.8ZinkenitePb9Sb22S42
5.6.9PlagionitePb5Sb8S17
5.6.10HeteromorphitePb7Sb8S19
5.6.11LaunayiteCuPb10(Sb,As)12S20
5.6.12PlayfairitePb16Sb18S43
5.6.13SemseyitePb9Sb8S21
5.6.14MadocitePb19(Sb,As)16S43
5.6.15BoulangeritePb5Sb4S11
5.6.17RobinsonitePb4Sb6S13
5.6.18GuettarditePbAsSbS4
5.6.19Twinnite Pb0.8Tl0.1Sb1.3As0.8S4
5.6.20VeenitePb2(Sb,As)2S5
5.6.21SorbyiteCuPb9(Sb,As)11S26
5.6.22GeocronitePb14(Sb,As)6S23
5.6.23GalenobismutitePbBi2S4
5.6.25CannizzaritePb4Bi6S13
5.6.26LillianitePb3-2xAgxBi2+xS6
5.6.27GiessenitePb27Cu2(Bi,Sb)19S57
5.6.28Platynite
5.6.29XilingolitePb3Bi2S6
5.6.30WeibullitePb5Bi8Se7S11
5.6.31WittitePb9Bi12(S,Se)27
5.6.32KirkiitePb10Bi3As3S19
5.6.33UstarasitePb(Bi,Sb)6S10 (?)

Other Names for Cosalite

Name in Other Languages:

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 Cosalite

Reference List:
Genth (1868), American Journal of Science: 45: 319.

Lundström (1874), Geol. För. Förh.: 2: 178.

Groth (1874): 18.

Sjögren (1878), Geol. För. Förh.: 4: 107.

Flink (1886), Ak. Stockholm, Öfv. Bihang.: 12(2): 2, 6.

Bancroft (1910) USGS Bulletin 430: 214.

Bastin (1923), USGS Bulletin 735D: 65.

Berry (1939), University of Toronto Stud., Geol. Ser.: 42: 23.

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: 445-447.

Zak, L., Megarskaya, L., Mumme, W. G. (1992): Rezbanyite from Ocna de fier (Vasko): a mixture of bismuthinite derivatives and cosalite. Neues Jahrbuch für Mineralogie, Monatshefte 1992, 69-79. [on Cu contents of cosalite]

Zeitschrift für Kristallographie: 140: 114-136.

D. TOPA & E. MAKOVICKY (2010): Crystal chemistry of cosalite based on new microprobe data and single-crystal structure determinations. Can. Mineral. (in press)

Internet Links for Cosalite

Localities for Cosalite

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 30, 2015 21:43:56 Page generated: January 24, 2015 21:06:23