Giessenite Mineral Data + 
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- 3.5.12.1 Izoklakeite Pb27(Cu,Fe)2(Sb,Bi)19S57 Pnnm 2/m 2/m 2/m
- 3.5.12.2 Giessenite Pb13(Cu,Ag)(Bi,Sb)9S28(?) P 21/n 2/m
- II/E.33-05 Izoklakeite Pb27(Cu,Fe)2(Sb,Bi)19S57 Pnnm 2/m 2/m 2/m
- II/E.33-10 Giessenite Pb13(Cu,Ag)(Bi,Sb)9S28(?) P 21/n 2/m
- II/E.33-15 Tintinaite Pb22Cu4(Sb,Bi)30S69 Pnnm 2/m 2/m 2/m
- II/E.33-20 Kobellite Pb22Cu4(Bi,Sb)30S69 Pnmm 2/m 2/m 2/m
- II/E.33-30 Eclarite Pb9(Cu,Fe)Bi12S28 P nma 2/m 2/m 2/m
- II/E.33-40 Nuffieldite Pb2Cu(Pb,Bi)Bi2S7 Pbnm 2/m 2/m 2/m
- II/E.33-50 Berryite Pb3(Ag,Cu)5Bi7S16 P 21/m 2/m
General Giessenite Information |
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 Chemical Formula: |
Pb13(Cu,Ag)(Bi,Sb)9S28 (?) | ||
| 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 % | |||
| Empirical Formula: |
Pb13Cu0.75Ag0.25Bi8SbS28 | ||
| Environment: |
Hydrothermal origin, with other sulfides. | ||
| IMA Status: |
Approved IMA 1963 | ||
| Locality: |
From Turtschi, between Giessen and Binn, about 2 km from the Lengenbach quarry, Binntal, Valais, Switzerland. Link to MinDat.org Location Data. | ||
| Name Origin: |
Named for Giessen, a village nearby the Binntal, Switzerland. | ||
Giessenite Image | |||
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Images:
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Giessenite Crystallography |
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| Axial Ratios: |
a:b:c =0.9038:1:0.1068 | ||
| Cell Dimensions: |
a = 34.51, b = 38.18, c = 4.08, Z = 4; beta = 90° V = 5,375.77 Den(Calc)= 6.75 | ||
| Crystal System: |
Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 21/n | ||
| X Ray Diffraction: |
By Intensity(I/Io): 3.62(1), 3.15(0.5), 3.32(0.5), | ||
Physical Properties of Giessenite |
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| Color: |
Grayish black. | ||
| Density: |
7.45 | ||
| Diaphaniety: |
Opaque | ||
| Habit: |
Acicular - Occurs as needle-like crystals. | ||
| Habit: |
Pseudo Orthorhombic - Crystals show an orthorhombic shape. | ||
| Hardness: |
2.5 - Finger Nail | ||
| Luster: |
Metallic | ||
| Streak: |
grayish black | ||
Calculated Properties of Giessenite |
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| Electron Density: |
relectron=5.59 gm/cc |
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| Fermion Index |
Fermion Index = 0.11026 Boson Index = 0.88974 |
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| Photoelectric: |
PEGiessenite =1,519.12 barns/electron |
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Giessenite is Not Radioactive |
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Giessenite Classification |
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| Dana Class: |
3.5.12.2 (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 | |||
| (3.5.12)Dana Group | |||
| Strunz Class: |
II/E.33-10 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.33 - Izoklakeite - Berryite series | |||
Other Giessenite Information |
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| References: |
NAME( AntBidBlaNic1) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) | ||
| See Also: |
Links to other databases for Giessenite : 1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (UofA) 7 -MinDAT 8 -MinMax(Deutsch) 9 -MinMax(English) 10 -Mineralienatlas (Deutsch) 11 -QUT Mineral Atlas 12 -École des Mines de Paris Search for Giessenite using: Visit our Advertisers for Giessenite : Translate Giessenite Mineral Data : Ask about Giessenite here : Print or Cut-and-Paste your Giessenite Specimen Label here :
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