Veenite Mineral Data + 
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- 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
- II/E.18-10 Dufrenoysite Pb2As2S5 P 21/m 2/m
- II/E.18-20 Veenite Pb2(Sb,As)2S5 P 21cn mm2
General Veenite Information |
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 Chemical Formula: |
Pb2(Sb,As)2S5 | ||
| Composition: |
Molecular Weight = 776.08 gm | ||
| Antimony 17.26 % Sb | |||
| Arsenic 8.69 % As | |||
| Lead 53.40 % Pb | |||
| Sulfur 20.66 % S | |||
| ______ | |||
| 100.00 % | |||
| Empirical Formula: |
Pb2Sb1.1As0.9S5 | ||
| Environment: |
As small masses, stringers, and disseminated grains in marbles developed in a sequence of Precambrian metasediments near a contact with plutonic granitic gneiss. | ||
| IMA Status: |
Approved IMA 1967 | ||
| Locality: |
Madoc, Ontario, Canada. Link to MinDat.org Location Data. | ||
| Name Origin: |
Named for R. W. Van der Veen (1883-1925), Dutch economic geologist and metallographer. | ||
| Synonym: |
IMA1966-016 | ||
Search for Veenite Images | |||
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Images:
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Veenite Crystallography |
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| Axial Ratios: |
a:b:c =0.161:1:0.3015 | ||
| Cell Dimensions: |
a = 4.22, b = 26.2, c = 7.9, Z = 4; V = 873.46 Den(Calc)= 5.90 | ||
| Crystal System: |
Orthorhombic - PyramidalH-M Symbol (mm2) Space Group: P 21cn | ||
| X Ray Diffraction: |
By Intensity(I/Io): 3.81(1), 3.03(0.9), 3.42(0.8), | ||
Physical Properties of Veenite |
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| Cleavage: |
None | ||
| Color: |
Steel gray. | ||
| Density: |
5.92 | ||
| Diaphaniety: |
Opaque | ||
| Fracture: |
Brittle - Conchoidal - Very brittle fracture producing small, conchoidal fragments. | ||
| Habit: |
Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline). | ||
| Hardness: |
3.5-4 - Copper Penny-Fluorite | ||
| Luster: |
Metallic | ||
| Streak: |
black | ||
Optical Properties of Veenite |
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| RL Anisotrophism: |
Weak, white to pale pinkish brown. | ||
| RL Color: |
White. | ||
| RL Pleochroism: |
Moderate. | ||
Calculated Properties of Veenite |
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| Electron Density: |
relectron=5.01 gm/cc |
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| Fermion Index |
Fermion Index = 0.11955 Boson Index = 0.88045 |
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| Photoelectric: |
PEVeenite =1,032.01 barns/electron |
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Veenite is Not Radioactive |
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Veenite Classification |
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| Dana Class: |
3.5.9.2 (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 | |||
| (3.5.9)Dana Group | |||
| Strunz Class: |
II/E.18-20 II - Sulfides and sulphosalts | ||
| II/E - Sulfosalts (S : As,Sb,Bi = x) Lead-Sulfosalts with As/Sb, x=3,0-2,5 | |||
| II/E.18 - Dufrenoysite - Veenite series | |||
Other Veenite Information |
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| References: |
NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(AntBidBlaNic1) | ||
| See Also: |
Links to other databases for Veenite : 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 Veenite using: Visit our Advertisers for Veenite : Translate Veenite Mineral Data : Ask about Veenite here : Print or Cut-and-Paste your Veenite Specimen Label here :
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