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Yaroslavite Mineral Data
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General Yaroslavite Information
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 Chemical Formula: |
Ca3Al2F10(OH)2•(H2O) |
| Composition: |
Molecular Weight = 416.21 gm |
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Calcium 28.89 % Ca 40.42 % CaO |
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Aluminum 12.97 % Al 24.50 % Al2O3 |
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Hydrogen 0.97 % H 8.66 % H2O |
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Oxygen 11.53 % O |
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Fluorine 45.65 % F 45.65 % F |
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- %
F -19.22 % -O=F2 |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
| Empirical Formula: |
Ca3Al2F10(OH)2•(H2O) |
| Environment: |
In banded fluorite-sellaite-tournaline ores. |
| IMA Status: |
Approved IMA 1966 |
| Locality: |
Yaroslav, Siberia, Russia. Link to MinDat.org Location Data. |
| Name Origin: |
Named for the locality. |
| Name Pronunciation: |
Yaroslavite + Pronunciation  |
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Yaroslavite Crystallography
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| Axial Ratios: |
a:b:c =1.5804:1:0.8155 |
| Cell Dimensions: |
a = 8.74, b = 5.53, c = 4.51, Z = 1; V = 217.98 Den(Calc)= 3.17 |
| Crystal System: |
Orthorhombic Space Group: Unk |
| X Ray Diffraction: |
By Intensity(I/Io): 3.445(1), 2.222(0.8), 3.653(0.7), |
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Physical Properties of Yaroslavite
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| Cleavage: |
{???} Good, {???} Good |
| Color: |
White. |
| Density: |
3.09 |
| Diaphaneity: |
Transparent |
| Fracture: |
Irregular - Flat surfaces (not cleavage) fractured in an irregular pattern. |
| Habit: |
Fibrous - Crystals made up of fibers. |
| Habit: |
Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite) |
| Habit: |
Spherical - Spherical, rounded aggregates. |
| Hardness: |
4.5 - Between Fluorite and Apatite |
| Luminescence: |
Weakly Fluorescent, Short UV=pale violet. |
| Luster: |
Vitreous (Glassy) |
| Streak: |
white |
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Optical Properties of Yaroslavite
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| Optical Data: |
Biaxial (-), a=1.413, b=1.416-1.417, g=1.423, bire=0.0100, 2V(Calc)=68-80, 2V(Meas)=74. |
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Calculated Properties of Yaroslavite
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| Electron Density: |
Bulk Density (Electron Density)=3.11 gm/cc
note: Specific Gravity of Yaroslavite =3.17 gm/cc.
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| Fermion Index: |
Fermion Index = 0.0004467921
Boson Index = 0.9995532079 |
| Photoelectric: |
PEYaroslavite = 4.23 barns/electron
U=PEYaroslavite x rElectron Density= 13.14 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Yaroslavite is Not Radioactive |
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Yaroslavite Classification
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| Dana Class: |
11.06.15.01 (11)Halide Complexes; Alumino-fluorides |
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(11.06)with miscellaneous formulae |
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(11.06.15)Dana Group |
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11.06.15.01 Yaroslavite Ca3Al2F10(OH)2•(H2O) Unk Ortho |
| Strunz Class: |
03.CB.50 03 - HALIDES |
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03.C - Complex Halides |
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03.CB -Neso-aluminofluorides |
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03.CB.50 Yaroslavite Ca3Al2F10(OH)2•(H2O) Unk Ortho |
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Other Yaroslavite Information
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| References: |
NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Dana8) |
| 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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Print or Cut-and-Paste your Yaroslavite Specimen Label here :
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Yaroslavite
Ca3Al2F10(OH)2•(H2O)
Dana No: 11.06.15.01 Strunz No: 03.CB.50
Locality:
Notes:
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