Mineralogy Database

Paderaite Mineral Data

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General Paderaite Information

Help on Chemical  Formula: Chemical Formula: Cu7((Cu,Ag)0.33Pb1.33Bi11.33)13S22
Help on Composition: Composition: Molecular Weight = 3,824.86 gm
   Copper     11.78 %  Cu
   Silver      0.51 %  Ag
   Bismuth    61.63 %  Bi
   Tellurium   0.23 %  Te
   Lead        7.42 %  Pb
   Sulfur     18.43 %  S
             100.00 % 
Help on Empirical Formula: Empirical Formula: Cu7.09Ag0.18Pb1.37Bi11.28S21.98Te0.07
Help on Environment: Environment: Intimately intergrown with other Pb-Bi sulfosalts.
Help on IMA Status: IMA Status: Approved IMA 1985
Help on Locality: Locality: Baita (Resbanya), Romania. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for K. Padera, Charles University, Prague, Czechoslovakia.
Help on Name Pronunciation: Name Pronunciation: Paderaite + Pronunciation Say PADERAITE
Help on Synonym: Synonym: ICSD 63260
  PDF 42-617

Paderaite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =4.4647:1:7.2241
Help on Cell Dimensions: Cell Dimensions: a = 17.585, b = 3.9386, c = 28.453, Z = 2; beta = 105.41° V = 1,899.82 Den(Calc)= 6.69
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: P 21/m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.06(1), 3.63(0.74), 3.21(0.54),

Physical Properties of Paderaite

Help on Color: Color: Black, Steel gray.
Help on Density: Density: 6.91
Help on Diaphaneity: Diaphaneity: Opaque
Help on Fracture: Fracture: Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern.
Help on Habit: Habit: Fibrous - Crystals made up of fibers.
Help on Habit: Habit: Platy - Sheet forms (e.g. micas).
Help on Hardness: Hardness: 4 - Fluorite
Help on Luster: Luster: Metallic
Help on Streak: Streak: lead gray

Optical Properties of Paderaite

Help on RL Anisotrophism: RL Anisotrophism: Moderate.
Help on RL Color: RL Color: Creamy white.

Calculated Properties of Paderaite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=5.66 gm/cc
note: Specific Gravity of Paderaite =6.69 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.01
Boson Index = 0.99
Help on Photoelectric: Photoelectric: PEPaderaite =1,316.19 barns/electron
U=PEPaderaite x rElectron Density=7,449.53 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Paderaite is Not Radioactive

Paderaite Classification

Help on  Dana Class: Dana Class: (03)Sulfides - Sulfosalts
  (03.08)where 1 < z/y <2 - (A+)i (A++)j [By Cz], A=metals, B=semi-metals, C=non-metals
  (03.08.04)Dana Group Hodrushite Cu8Bi12S22 A2/m 2/m Paderaite Cu7((Cu,Ag)0.33Pb1.33Bi11.33)13S22 P 21/m 2/m
Help on  Strunz Class: Strunz Class: 02.JA.10e 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf
  02.J - Sulfosalts of PbS Archetype
  02.JA -Galena derivatives with little or no Pb
02.JA.10e Paderaite Cu7((Cu,Ag)0.33Pb1.33Bi11.33)13S22 P 21/m 2/m

Other Paderaite Information

Help on References: References: NAME( AntBidBlaNic1) PHYS. PROP.(Dana8, AmMin 91:1953) OPTIC PROP.(AntBidBlaNic1)
Help on See Also: See Also: Links to other databases for Paderaite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info

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Dana No: Strunz No: 02.JA.10e





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