Cosalite Mineral Data + Say COSALITE

AA Mineral Sepcimens
[What's New] [Mineral Galleries] [Sale Items] [About Us] [Contacts]
At AA Mineral Specimens, we source quality Mineral Specimens, Fossils, Gemstones,
Decorative Stones, Lapidary Material and Specimen Sets world-wide

General Cosalite Information
Help on Chemical Formula: Chemical Formula: Pb2Bi2S5
Help on Composition: Composition: Molecular Weight = 992.69 gm
   Bismuth  42.10 %  Bi
   Lead     41.75 %  Pb
   Sulfur   16.15 %  S
           ______ 
           100.00 % 
Help on Empirical Formula: Empirical Formula: Pb2Bi2S5
Help on Environment: Environment: In moderate-tempurature hydrothermal deposits, contact metasomatic replacements, epithermal replacements and pegmatites.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1868
Help on Locality: Locality: Silver Mine at Cosala, Sinaloa, Mexico. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after its locality. Bjelkite is named after the Bjelke mine at Nordmark, Vermland, Sweden.
Help on Synonym: Synonym: Bjelkite
  ICSD 30780
  PDF 42-1409
 

Cosalite Image

Click Here for Larger Cosalite Image in a New Browser Window Images:
Click Here for Larger Cosalite Image

Cosalite

Comments: Metallic-lustered cosalite on matrix.
Location: Limestone Quarry, Hammerunterwiesenthal, Oberwiesenthal, Erzgebirge, Saxony, Germany. Scale: Picture size 8 mm.
© Thomas Witzke / Abraxas-Verlag

Cosalite Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =0.799:1:0.1698
Help on Cell Dimensions: Cell Dimensions: a = 19.09, b = 23.89, c = 4.058, Z = 8; V = 1,850.69 Den(Calc)= 7.13
Help on Crystal System: Crystal System: Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: Pbnm
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.44(1), 2.81(0.3), 3.37(0.25),
Help on Forms: Forms:

Mouse
Dbl Clk - Start-Stop Rotation
RMB - Cycle Display Modes
Drag1 - Manipulate Crystal
Drag2 - Resize
Keyboard
S - Stereo
I - Indicies
<space> - Start-Stop Rotation
F - Fit to Screen
M - Menu
Help on Above

Forms: [ 0 1 0] [ 2 1 0] [ 1 2 0] [ 1 3 0] [ 1 0 0] [ 1 1 0] [ 6 3 2] [ 3 0 1]

Warning: this large pop-up is very compute intensive and may not work well with some computers.
Click Here for Large Cosalite Structure Window Crystal Structure:

Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
Keyboard
S - Stereo Pair on/off
H - Help Screen
I - Data Info
A - Atoms On/Off
P - Polyhedra On/Off
B - Bonds On/Off
 Help on Above


Srikrishnan T , Nowacki W , Zeitschrift fur Kristallographie , 140 (1974) p.114-136, A redetermination of the crystal structure of cosalite, Pb2Bi2S5, Locality: Cariboo gold mines, Wells, British Columbia, Canada

 

Physical Properties of Cosalite

Help on Cleavage: Cleavage: [010] Good
Help on Color: Color: Gray, Steel gray, Silver white.
Help on Density: Density: 6.4 - 6.8, Average = 6.6
Help on Diaphaniety: Diaphaniety: Opaque
Help on Fracture: Fracture: Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern.
Help on Habit: Habit: Massive - Fibrous - Distinctly fibrous fine-grained forms.
Help on Habit: Habit: Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite)
Help on Hardness: Hardness: 2.5-3 - Finger Nail-Calcite
Help on Luminescence: Luminescence: Non-fluorescent.
Help on Luster: Luster: Metallic
Help on Magnetism: Magnetism: Nonmagnetic
Help on Streak: Streak: black
 

Optical Properties of Cosalite

Help on RL Anisotrophism: RL Anisotrophism: Weak but distinct in oil.
Help on RL Color: RL Color: White with a trace of cream.
Help on RL Pleochroism: RL Pleochroism: Weak.
Help on Reflectivity Reflectivity
Standardized Intensity (100%) Reflection Spectra of Cosalite in Air
λ R1 R2  ∑ R1(λ)   ∑ R2(λ) 
 400 nm   46.90   49.70 
   
 420 nm   46.20   49.00 
 440 nm   45.50   48.30 
 460 nm   44.70   47.50 
 480 nm   43.90   46.70 
 500 nm   43.00   46.00 
 520 nm   42.20   45.20 
 540 nm   41.50   44.50 
 560 nm   41.00   44.00 
 580 nm   40.50   43.60 
 600 nm   40.20   43.50 
 620 nm   40.10   43.40 
 640 nm   40.00   43.30 
 660 nm   40.00   43.20 
 680 nm   39.90   43.20 
 700 nm   39.90   43.10 
Calculated Relative Intensity Colors of Cosalite in Air
Relative
Intensity		    0%   30%   60%   90% 100% 120% 150% 180% 210% 220%
R1                    
R2                    
 

Calculated Properties of Cosalite

Help on Electron Density: Electron Density:

relectron=5.89 gm/cc
note: rCosalite =7.13 gm/cc.
Help on Fermion Index Fermion Index Fermion Index = 0.09346
Boson Index = 0.90654
Help on Photoelectric: Photoelectric:

PECosalite =1,597.07 barns/electron
U=PECosalite x relectron=9,406.16 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Cosalite is Not Radioactive
 

Cosalite Classification
Help on Dana Class: Dana Class: 3.5.9.1 (3)Sulfides - Sulfosalts
  (3.5)where 2.5 < z/y < 3 - (A+)i (A++)j [By Cz], A=metals, B=semi-metals, C=non-metals
  (3.5.9)Dana Group
 
3.5.9.1 Cosalite Pb2Bi2S5 Pbnm 2/m 2/m 2/m
 
3.5.9.2 Veenite Pb2(Sb,As)2S5 P 21cn mm2
 
3.5.9.3 Dufrenoysite Pb2As2S5 P 21/m 2/m
Help on Strunz Class: Strunz Class: II/E.34-10 II - Sulfides and sulphosalts
  II/E - Sulfosalts (S : As,Sb,Bi = x) Lead-Sulfosalts (Pb-Cu/Ag) with predominant Vismut x = 6.0 - 1.6
  II/E.34 - Cosalite - Galenobismuthite
 
II/E.34-08 Mozgovaite! PbBi4(S,Se)7 Bbmm 2/m 2/m 2/m
 
II/E.34-10 Cosalite Pb2Bi2S5 Pbnm 2/m 2/m 2/m
 
II/E.34-20 Proudite (Pb,Cu)8Bi9-10(S,Se)22 C 2/m 2/m
 
II/E.34-30 Weibullite Pb6Bi8(S,Se)18 P nma 2/m 2/m 2/m
 
II/E.34-60 Cannizzarite Pb4Bi6S13 C 2/m 2/m
 
II/E.34-65 Wittite Pb3Bi4(S,Se)9 P 2/m 2/m
 
II/E.34-70 Nordstromite Pb3CuBi7(S10Se4) P 21/m 2/m
 
II/E.34-80 Junoite Pb3Cu2Bi8(S,Se)16 C 2/m 2/m
 
II/E.34-85 Felbertalite! Cu2Pb6Bi8S19 C 2/m 2/m
 
II/E.34-90 Watkinsonite PbCu2Bi4(Se,S)8 Pm ? m
 
II/E.34-100 Paderaite AgPb2Cu6Bi11S22 P 21/m 2/m
 
II/E.34-110 Galenobismutite PbBi2S4 Pnam 2/m 2/m 2/m
 

Other Cosalite Information
Help on References: References: NAME( Duda&Rejl90) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1)
Help on See Also: See Also: Links to other databases for Cosalite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - Crocoite.com Mineral Locations 4 - EUROmin Project 5 -Google Images 6 -Google Scholar 7 -Handbook of Mineralogy (UofA) 8 -MinDAT 9 -MinMax(Deutsch) 10 -MinMax(English) 11 -Mineralienatlas (Deutsch) 12 -QUT Mineral Atlas 13 - WWW-MINCRYST 14 -École des Mines de Paris

Search for Cosalite using:

Google
 
Web webmineral.com
[ALTAVISTA] [AOL] [About.com] [All-The-Web] [HotBot] [Ixquick] [LookSmart] [MAMMA] [MSN.COM] [Netscape] [Teoma] [Wikipedia] [YAHOO]

Visit our Advertisers for Cosalite :
AA Mineral Specimens
B and L Minerals
Dan Weinrich Fine Minerals
Dan Weinrich Auctions
e-Rocks Auctions
Excalibur Minerals
Exceptional Minerals
Fabre Minerals
Greenside Minerals
John Betts Fine Minerals
Masons Minerals
Minernet.it
Mineral News
Mineral of the Month Club
MineralsWeb Fine Minerals
Rockshop.cz Kalat Fine Minerals
T G Fine Minerals
Wrights Rock Shop

Translate Cosalite Mineral Data :

Ask about Cosalite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Español

Print or Cut-and-Paste your Cosalite Specimen Label here :

Cosalite

Pb2Bi2S5
Dana No: 3.5.9.1 Strunz No: II/E.34-10
Locality:

 

Notes:

 
 
   
 
Go To Webmineral Home Crystallography X-Ray D-Spacing Table Chemical Composition
Dana Classification Strunz Classification Table of Mineral Properties Alphabetical Listing of Minerals
Search Webmineral Photo Gallery of Mineral Images Help Files Links