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Vonbezingite Mineral Data

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General Vonbezingite Information

Help on Chemical  Formula: Chemical Formula: Ca6Cu3(SO4)3(OH)12•2(H2O)
Help on Composition: Composition: Molecular Weight = 959.42 gm
   Calcium   25.06 %  Ca   35.07 % CaO
   Copper    19.87 %  Cu   24.87 % CuO
   Hydrogen   1.68 %  H    15.02 % H2O
   Sulfur    10.03 %  S    25.04 % SO3
   Oxygen    43.36 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca6Cu3(SO4)3(OH)12•2(H2O)
Help on Environment: Environment: Formed during a period of evaporation of surface or ground waters at ambient temperature and atmospheric pressure.
Help on IMA Status: IMA Status: Approved IMA 1991
Help on Locality: Locality: Wessels mine, near Kuruman, Cape Province, South Africa. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Karl-Ludwig von Bezing (1945� ), Austrian-South African mineral collector, for his contributions to knowledge of mineralogy of the Kalahari manganese field.
Help on Name Pronunciation: Name Pronunciation: Vonbezingite + Pronunciation Say VONBEZINGITE
Help on Synonym: Synonym: ICSD 67674
  PDF 47-1794

Vonbezingite Image

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Comments: Dark blue, blocky crystals of vonbezingite on matirx.
Location: Kalahari Manganese District, Cape Province, South Africa. Scale: Crystal size 0.7 cm.
© John Veevaert

Vonbezingite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =1.0532:1:1.5366
Help on Cell Dimensions: Cell Dimensions: a = 15.122, b = 14.358, c = 22.063, Z = 8; beta = 108.68° V = 4,538.01 Den(Calc)= 2.81
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: P 21/c
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.393(1), 3.12(0.85), 3.188(0.65),

Physical Properties of Vonbezingite

Help on Cleavage: Cleavage: None
Help on Color: Color: Azure.
Help on Density: Density: 2.82
Help on Diaphaneity: Diaphaneity: Transparent
Help on Hardness: Hardness: 4 - Fluorite
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: light blue

Optical Properties of Vonbezingite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.017 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= -0.021 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2158,KPDmeas= 0.215,KC= 0.2113
Ncalc = 1.59 - 1.6
Help on Optical Data: Optical Data: Biaxial (-), a=1.59, b=1.61, g=1.619, bire=0.0290, 2V(Calc)=66, 2V(Meas)=65-67.

Calculated Properties of Vonbezingite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.82 gm/cc
note: Specific Gravity of Vonbezingite =2.82 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0013010093
Boson Index = 0.9986989907
Help on Photoelectric: Photoelectric: PEVonbezingite = 12.11 barns/electron
U=PEVonbezingite x rElectron Density= 34.10 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Vonbezingite is Not Radioactive

Vonbezingite Classification

Help on  Dana Class: Dana Class: (31)Hydrated Sulfates Containing Hydroxyl or Halogen
  (31.05)where (A+ B++)3 (XO4) Zq�x(H2O)
  (31.05.01)Dana Group Vonbezingite Ca6Cu3(SO4)3(OH)12•2(H2O) P 21/c 2/m
Help on  Strunz Class: Strunz Class: 07.DD.65 07 - SULFATES (SELENATES, TELLURATES)
  07.D - Sulfates (selenates, etc.) with additional anions, with H2O
  07.DD -With only medium-sized cations; sheets of edge-sharing octahedra
07.DD.65 Vonbezingite Ca6Cu3(SO4)3(OH)12•2(H2O) P 21/c 2/m

Other Vonbezingite Information

Help on References: References: NAME( AntBidBlaNic5) PHYS. PROP.(Am.Min.,Vol.77,p1292-1300,1992) OPTIC PROP.(Am.Min.,Vol.77,p1292-1300,1992)
Help on See Also: See Also: Links to other databases for Vonbezingite :
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: 07.DD.65





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