Vimsite Mineral Data

Vimsite Mineral Data
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General Vimsite Information

Help on Chemical Formula: Chemical Formula: CaB2O2(OH)4
Help on Composition: Composition: Molecular Weight = 161.73 gm
   Calcium   24.78 %  Ca   34.67 % CaO
   Boron     13.37 %  B    43.05 % B2O3
   Hydrogen   2.49 %  H    22.28 % H2O
   Oxygen    59.36 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: CaB2O2(OH)4
Help on Environment: Environment: Boron-rich copper-bearing skarn. Dimorphous with uralborite.
Help on IMA Status: IMA Status: Approved IMA 1968
Help on Locality: Locality: Novofrolovskoye copper deposit, Turinsk district, near Krasnoturinsk, Northern Ural Mountains, Russia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named For the 50th anniversary of the All-Union Scientific Research Institute of Mineral Resources [an acronym for Vses. Nauch.-Issled. Inst. Mineral. Syrya], Moscow, Russia.
Help on Name Pronunciation: Name Pronunciation: Vimsite Say VIMSITE
Help on Synonym: Synonym: ICSD 25102
  PDF 21-134
 

Vimsite Image

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Vimsite

Comments: White to transparent vein of vimsite crystals in matrix.
Location: Solongo B Deposit, Buriatia Republic, Eastern Siberia Region, Russia. Scale: Picture Size 8 x 10 mm.
© Diederik Visser

Vimsite Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =1.0319:1:0.4572
Help on Cell Dimensions: Cell Dimensions: a = 10.02, b = 9.71, c = 4.44, Z = 4; beta = 92° V = 431.72 Den(Calc)= 2.49
Help on Crystal System: Crystal System: Monoclinic - PrismaticH-M Symbol (2/m) Space Group: C 2/c
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.48(1), 2.222(0.8), 3.72(0.7),
Click Here for Large Vimsite Structure Window Crystal Structure:

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Shashkin D P , Simonov M A , Belov N V , Doklady Akademii Nauk SSSR , 182 (1968) p.821-824, Crystal structure of a new natural borate vimsite Ca[B2O2(OH)4]

 

Physical Properties of Vimsite

Help on Cleavage: Cleavage: {???} Perfect
Help on Color: Color: Colorless.
Help on Density: Density: 2.54
Help on Diaphaneity: Diaphaneity: Transparent
Help on Hardness: Hardness: 4 - Fluorite
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white
 

Optical Properties of Vimsite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.013 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= -0.007 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2427,KPDmeas= 0.2379,KC= 0.2411
Ncalc = 1.6 - 1.61
Help on Optical Data: Optical Data: Biaxial (-), a=1.585, b=1.614, g=1.614, bire=0.0290, 2V(Calc)=0, 2V(Meas)=28.
 

Calculated Properties of Vimsite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.53 gm/cc
note: Specific Gravity of Vimsite =2.49 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.02
Boson Index = 0.98
Help on Photoelectric: Photoelectric: PEVimsite = 3.21 barns/electron
U=PEVimsite x rElectron Density= 8.12 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Vimsite is Not Radioactive
 

Vimsite Classification
Help on Dana Class: Dana Class: 25.01.05.01 (25)Anhydrous Borates Containing Hydroxyl or Halogen
  (25.01)Dana Type
  (25.01.05)Dana Group
 
25.01.05.01 Vimsite CaB2O2(OH)4 C 2/c 2/m
Help on Strunz Class: Strunz Class: 06.BC.15 06 - BORATES
  06.B - Diborates
  06.BC -Ino-diborates with triangles and/or tetrahedra
 
06.BC.15 Vimsite CaB2O2(OH)4 C 2/c 2/m
 

Other Vimsite Information
Help on References: References: NAME( AntBidBlaNic5) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Vimsite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - Google Images
6 - Google Scholar
7 - Handbook of Mineralogy (MinSocAm)
8 - Handbook of Mineralogy (UofA)
9 - MinDAT
10 - MinMax(Deutsch)
11 - MinMax(English)
12 - Mineralienatlas (Deutsch)
13 - QUT Mineral Atlas
14 - Ruff.Info
15 - WWW-MINCRYST

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Print or Cut-and-Paste your Vimsite Specimen Label here :

Vimsite

CaB2O2(OH)4
Dana No: 25.01.05.01 Strunz No: 06.BC.15
Locality:

 

Notes: