Mineralogy Database

Yaroslavite Mineral Data

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General Yaroslavite Information

Help on Chemical  Formula: Chemical Formula: Ca3Al2F10(OH)2•(H2O)
Help on Composition: Composition: Molecular Weight = 416.21 gm
   Calcium   28.89 %  Ca   40.42 % CaO
   Aluminum  12.97 %  Al   24.50 % Al2O3
   Hydrogen   0.97 %  H     8.66 % H2O
   Oxygen    11.53 %  O
   Fluorine  45.65 %  F    45.65 % F
               -   %   F   -19.22 % -O=F2    
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca3Al2F10(OH)2•(H2O)
Help on Environment: Environment: In banded fluorite-sellaite-tournaline ores.
Help on IMA Status: IMA Status: Approved IMA 1966
Help on Locality: Locality: Yaroslav, Siberia, Russia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the locality.
Help on Name Pronunciation: Name Pronunciation: Yaroslavite + Pronunciation Say YAROSLAVITE

Yaroslavite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =1.5804:1:0.8155
Help on Cell Dimensions: Cell Dimensions: a = 8.74, b = 5.53, c = 4.51, Z = 1; V = 217.98 Den(Calc)= 3.17
Help on Crystal System: Crystal System: Orthorhombic Space Group: Unk
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.445(1), 2.222(0.8), 3.653(0.7),

Physical Properties of Yaroslavite

Help on Cleavage: Cleavage: {???} Good, {???} Good
Help on Color: Color: White.
Help on Density: Density: 3.09
Help on Diaphaneity: Diaphaneity: Transparent
Help on Fracture: Fracture: Irregular - Flat surfaces (not cleavage) fractured in an irregular pattern.
Help on Habit: Habit: Fibrous - Crystals made up of fibers.
Help on Habit: Habit: Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite)
Help on Habit: Habit: Spherical - Spherical, rounded aggregates.
Help on Hardness: Hardness: 4.5 - Between Fluorite and Apatite
Help on Luminescence: Luminescence: Weakly Fluorescent, Short UV=pale violet.
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white

Optical Properties of Yaroslavite

Help on Optical Data: Optical Data: Biaxial (-), a=1.413, b=1.416-1.417, g=1.423, bire=0.0100, 2V(Calc)=68-80, 2V(Meas)=74.

Calculated Properties of Yaroslavite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.11 gm/cc
note: Specific Gravity of Yaroslavite =3.17 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0004467921
Boson Index = 0.9995532079
Help on Photoelectric: Photoelectric: PEYaroslavite = 4.23 barns/electron
U=PEYaroslavite x rElectron Density= 13.14 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Yaroslavite is Not Radioactive

Yaroslavite Classification

Help on  Dana Class: Dana Class: (11)Halide Complexes; Alumino-fluorides
  (11.06)with miscellaneous formulae
  (11.06.15)Dana Group Yaroslavite Ca3Al2F10(OH)2•(H2O) Unk Ortho
Help on  Strunz Class: Strunz Class: 03.CB.50 03 - HALIDES
  03.C - Complex Halides
  03.CB -Neso-aluminofluorides
03.CB.50 Yaroslavite Ca3Al2F10(OH)2•(H2O) Unk Ortho

Other Yaroslavite Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Dana8)
Help on See Also: See Also: Links to other databases for Yaroslavite :
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: 03.CB.50





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