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Giessenite Mineral Data

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General Giessenite Information

Help on Chemical  Formula: Chemical Formula: Pb13(Cu,Ag)(Bi,Sb)9S28 (?)
Help on Composition: Composition: Molecular Weight = 5,459.67 gm
   Copper     0.87 %  Cu
   Silver     0.49 %  Ag
   Bismuth   30.62 %  Bi
   Antimony   2.23 %  Sb
   Lead      49.34 %  Pb
   Sulfur    16.45 %  S
            100.00 % 
Help on Empirical Formula: Empirical Formula: Pb13Cu0.75Ag0.25Bi8SbS28
Help on Environment: Environment: Hydrothermal origin, with other sulfides.
Help on IMA Status: IMA Status: Approved IMA 1963
Help on Locality: Locality: From Turtschi, between Giessen and Binn, about 2 km from the Lengenbach quarry, Binntal, Valais, Switzerland. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Giessen, a village nearby the Binntal, Switzerland.
Help on Name Pronunciation: Name Pronunciation: Giessenite + Pronunciation Say GIESSENITE

Giessenite Image

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Comments: Small clumps of acicular crystal mats of giessenite with rounded cosalite grains (as photographed on pure white fibrous backing material).
Location: Otome Mine, near Kofu, Yamanashi, Japan. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Giessenite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.9038:1:0.1068
Help on Cell Dimensions: Cell Dimensions: a = 34.51, b = 38.18, c = 4.08, Z = 4; beta = 90° V = 5,375.77 Den(Calc)= 6.75
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: P 21/n
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.62(1), 3.15(0.5), 3.32(0.5),

Physical Properties of Giessenite

Help on Color: Color: Grayish black.
Help on Density: Density: 7.45
Help on Diaphaneity: Diaphaneity: Opaque
Help on Habit: Habit: Acicular - Occurs as needle-like crystals.
Help on Habit: Habit: Pseudo Orthorhombic - Crystals show an orthorhombic shape.
Help on Hardness: Hardness: 2.5 - Finger Nail
Help on Luster: Luster: Metallic
Help on Streak: Streak: grayish black

Calculated Properties of Giessenite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=5.59 gm/cc
note: Specific Gravity of Giessenite =6.75 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.11
Boson Index = 0.89
Help on Photoelectric: Photoelectric: PEGiessenite =1,519.12 barns/electron
U=PEGiessenite x rElectron Density=8,498.62 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Giessenite is Not Radioactive

Giessenite Classification

Help on  Dana Class: Dana Class: (03)Sulfides - Sulfosalts
  (03.05)where 2.5 < z/y < 3 - (A+)i (A++)j [By Cz], A=metals, B=semi-metals, C=non-metals
  (03.05.12)Dana Group Izoklakeite Pb27(Cu,Fe)2(Sb,Bi)19S57 Pnnm 2/m 2/m 2/m Giessenite Pb13(Cu,Ag)(Bi,Sb)9S28(?) P 21/n 2/m
Help on  Strunz Class: Strunz Class: 02.HB.10b 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.10b Giessenite Pb13(Cu,Ag)(Bi,Sb)9S28(?) P 21/n 2/m
02.HB.10b Izoklakeite Pb27(Cu,Fe)2(Sb,Bi)19S57 Pnnm 2/m 2/m 2/m

Other Giessenite Information

Help on References: References: NAME( AntBidBlaNic1) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Giessenite :
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 Giessenite Specimen Label here :


Pb13(Cu,Ag)(Bi,Sb)9S28 (?)
Dana No: Strunz No: 02.HB.10b





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