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Friedrichite Mineral Data

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General Friedrichite Information

Help on Chemical  Formula: Chemical Formula: Pb5Cu5Bi7S18
Help on Composition: Composition: Molecular Weight = 3,393.78 gm
   Copper    9.36 %  Cu
   Bismuth  43.10 %  Bi
   Lead     30.53 %  Pb
   Sulfur   17.01 %  S
           ______ 
           100.00 % 
Help on Empirical Formula: Empirical Formula: Pb5Cu5Bi7S18
Help on Environment: Environment: As aggregates of granular crystals, in boulders of vein quartz which occur in the scree of a landslip.
Help on IMA Status: IMA Status: Approved IMA 1978
Help on Locality: Locality: Near the emerald beryl deposit in the "Sedl" region, east of the Haqbachtan, Salzburg, Austria. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: For Professor Dr.-Ing O.M. Friedrich, of the Mining University, Leoben, Styria, Austria.
Help on Name Pronunciation: Name Pronunciation: Friedrichite + Pronunciation Say FRIEDRICHITE
 

Friedrichite Image

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  Krupkaite   Friedrichite   Benjaminite

Comments: Crystals of a mixture of friedrichite, krupkaite, and benjaminite, with quartz crystals.
Location: Estela Mine, Julcani District, Junin, Peru. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Friedrichite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =2.9047:1:0.3442
Help on Cell Dimensions: Cell Dimensions: a = 33.84, b = 11.65, c = 4.01, Z = 6; V = 1,580.89 Den(Calc)= 21.39
Help on Crystal System: Crystal System: Orthorhombic - Pyramidal H-M Symbol (mm2) Space Group: Pb21m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.161(1), 3.584(1), 3.644(1),
 

Physical Properties of Friedrichite

Help on Color: Color: Silver gray.
Help on Density: Density: 6.98
Help on Diaphaneity: Diaphaneity: Opaque
Help on Hardness: Hardness: 4 - Fluorite
Help on Luster: Luster: Metallic
 

Optical Properties of Friedrichite

Help on RL Anisotrophism: RL Anisotrophism: Strong in oil, distinct in air.
Help on RL Color: RL Color: Creamy yellowish white in air, more pinkish in oil.
 

Calculated Properties of Friedrichite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=18.0 gm/cc
note: Specific Gravity of Friedrichite =21.4 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.06
Boson Index = 0.94
Help on Photoelectric: Photoelectric: PEFriedrichite =1,390.76 barns/electron
U=PEFriedrichite x rElectron Density=24964.24 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Friedrichite is Not Radioactive
 

Friedrichite Classification

Help on  Dana Class: Dana Class: 03.04.05.05 (03)Sulfides - Sulfosalts
  (03.04)where z/y > 3 - (A+)i (A++)j [By Cz], A=metals, B=semi-metals, C=non-metals
  (03.04.05)Aikinite Group (Orthorhombic containing Pb, Cu, Bi, & S)
 
03.04.05.01 Aikinite PbCuBiS3 Pbnm 2/m 2/m 2/m
 
03.04.05.02 Krupkaite PbCuBi3S6 P mc21 mm2
 
03.04.05.03 Gladite PbCuBi5S9 P nma 2/m 2/m 2/m
 
03.04.05.04 Hammarite Pb2Cu2Bi4S9(?) Pbnm 2/m 2/m 2/m
 
03.04.05.05 Friedrichite Pb5Cu5Bi7S18 Pb21m mm2
 
03.04.05.06 Pekoite PbCuBi11(S,Se)18 P 21am mm2
 
03.04.05.07 Lindstromite Pb3Cu3Bi7S15 Pbnm 2/m 2/m 2/m
 
03.04.05.08 Salzburgite! Cu1.6Pb1.6Bi6.4S12 P mc21 mm2
Help on  Strunz Class: Strunz Class: 02.HB.05a 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf
  02.H - Sulfosalts of SnS Archetype
  02.HB -With Cu, Ag, Hg, Fe, Sn and Pb
 
02.HB.05a Aikinite PbCuBiS3 Pbnm 2/m 2/m 2/m
 
02.HB.05a Hammarite Pb2Cu2Bi4S9(?) Pbnm 2/m 2/m 2/m
 
02.HB.05a Gladite PbCuBi5S9 P nma 2/m 2/m 2/m
 
02.HB.05a Friedrichite Pb5Cu5Bi7S18 Pb21m mm2
 
02.HB.05a Lindstromite Pb3Cu3Bi7S15 Pbnm 2/m 2/m 2/m
 
02.HB.05a Krupkaite PbCuBi3S6 P mc21 mm2
 
02.HB.05a Pekoite PbCuBi11(S,Se)18 P 21am mm2
 
02.HB.05a Paarite! Cu1.7Pb1.7Bi6.3S12 Pmcn 2/m 2/m 2/m
 
02.HB.05a Emilite! Cu2.68Pb2.68Bi5.32S12 P mc21 mm2
 
02.HB.05a Salzburgite! Cu1.6Pb1.6Bi6.4S12 P mc21 mm2
 

Other Friedrichite Information

Help on References: References: NAME( AntBidBlaNic1) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1)
Help on See Also: See Also: Links to other databases for Friedrichite :
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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Print or Cut-and-Paste your Friedrichite Specimen Label here :

Friedrichite

Pb5Cu5Bi7S18
Dana No: 03.04.05.05 Strunz No: 02.HB.05a
Locality:

 

Notes:

 

 
   
 


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