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Vlodavetsite Mineral Data

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General Vlodavetsite Information

Help on Chemical  Formula: Chemical Formula: AlCa2(SO4)2F2Cl•4(H2O)
Help on Composition: Composition: Molecular Weight = 444.78 gm
   Calcium   18.02 %  Ca   25.22 % CaO
   Aluminum   6.07 %  Al   11.46 % Al2O3
   Hydrogen   1.81 %  H    16.20 % H2O
   Sulfur    14.42 %  S    36.00 % SO3
   Chlorine   7.97 %  Cl    7.97 % Cl
               -   %   Cl   -1.80 % -O=Cl2   
   Oxygen    43.17 %  O
   Fluorine   8.54 %  F     8.54 % F
               -   %   F    -3.60 % -O=F2    
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: AlCa2(SO4)2F2Cl•4(H2O)
Help on Environment: Environment: A product of fumarolic exhalations at temperatures below 100 deg. C.
Help on IMA Status: IMA Status: Approved IMA 1993 (Dana # Added)
Help on Locality: Locality: The Tolbachik Main Fracture eruption (Cone II of the Northern fissure), Kanchatka, Russia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for V. I. Vlodavets (1893-1993), Russian volcanologist.
Help on Name Pronunciation: Name Pronunciation: Vlodavetsite + Pronunciation Say VLODAVETSITE
Help on Synonym: Synonym: ICSD 80437
  PDF 85-2276

Vlodavetsite Image

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Comments: Colorless, vitreous, massive vlodavetsite, rarely in irregular plates associated with calcite.
Location: Tolbachik volcano, Kamchatka Oblast', Far-Eastern Region, Russia. Scale: See Image.
© Rruff Database

Vlodavetsite Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:1.94355
Help on Cell Dimensions: Cell Dimensions: a = 6.856, c = 13.325, Z = 2; V = 626.34 Den(Calc)= 2.36
Help on Crystal System: Crystal System: Tetragonal - Dipyramidal H-M Symbol (4/m) Space Group: I 4/m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.431(1), 3.335(0.8), 6.67(0.6),
Help on Forms: Forms:

Dbl Clk - Start-Stop Rotation
RMB - Cycle Display Modes
Drag1 - Manipulate Crystal
Drag2 - Resize

S - Stereo
I - Indicies
<space> - Start-Stop Rotation
F - Fit to Screen
M - Menu

Help on Above

Forms: ( 1 0 0) ( 0 0 1)

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Physical Properties of Vlodavetsite

Help on Cleavage: Cleavage: {100} Perfect
Help on Color: Color: Colorless, Yellow white.
Help on Density: Density: 2.35
Help on Diaphaneity: Diaphaneity: Transparent
Help on Fracture: Fracture: Brittle - Generally displayed by glasses and most non-metallic minerals.
Help on Habit: Habit: Platy - Sheet forms (e.g. micas).
Help on Habit: Habit: Tabular - Form dimensions are thin in one direction.
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white

Optical Properties of Vlodavetsite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.02 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0.024 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2193,KPDmeas= 0.2202,KC= 0.2247
Ncalc = 1.53
Help on Optical Data: Optical Data: Uniaxial (+), w=1.509, e=1.526, bire=0.0170.

Calculated Properties of Vlodavetsite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.37 gm/cc
note: Specific Gravity of Vlodavetsite =2.35 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0015346324
Boson Index = 0.9984653676
Help on Photoelectric: Photoelectric: PEVlodavetsite = 3.83 barns/electron
U=PEVlodavetsite x rElectron Density= 9.07 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Vlodavetsite is Not Radioactive

Vlodavetsite Classification

Help on  Dana Class: Dana Class: (31)Hydrated Sulfates Containing Hydroxyl or Halogen
  (31.08)where (A+ B++)3 (XO4)2 Zq�x(H2O)
  (31.08.05)Dana Group Vlodavetsite! AlCa2(SO4)2F2Cl•4(H2O) I 4/m 4/m
Help on  Strunz Class: Strunz Class: 07.DF.40 07 - SULFATES (SELENATES, TELLURATES)
  07.D - Sulfates (selenates, etc.) with additional anions, with H2O
  07.DF -With large and medium-sized cations
07.DF.40 Lannonite HCa4Mg2Al4(SO4)8F9•32(H2O) Unk Tetra
07.DF.40 Vlodavetsite! AlCa2(SO4)2F2Cl•4(H2O) I 4/m 4/m

Other Vlodavetsite Information

Help on References: References: NAME( MinRec) PHYS. PROP.(Am.Min.,Vol.81,p768,1996) OPTIC PROP.(MinRec)
Help on See Also: See Also: Links to other databases for Vlodavetsite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - Handbook of Mineralogy (MinSocAm)
7 - Handbook of Mineralogy (UofA)
8 - MinDAT
9 - Mineralienatlas (Deutsch)
10 - Online Mineral Museum
11 - QUT Mineral Atlas
12 - Ruff.Info

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Dana No: Strunz No: 07.DF.40





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