Kyanite Mineral Data

Kyanite Mineral Data
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General Kyanite Information

Help on Chemical Formula: Chemical Formula: Al2SiO5 = Al[6]Al[6]OSiO4
Help on Composition: Composition: Molecular Weight = 162.05 gm
   Aluminum  33.30 %  Al   62.92 % Al2O3
   Silicon   17.33 %  Si   37.08 % SiO2
   Oxygen    49.37 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Al2SiO5
Help on Environment: Environment: Metamorphosed peri-aluminous sedimentary rocks.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1789
Help on Locality: Locality: Common world wide. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: From the Greek kyanos = "blue."
Help on Name Pronunciation: Name Pronunciation: Kyanite Say KYANITE
Help on Synonym: Synonym: Disthene
  ICSD 27771
  PDF Nov-46
 

Kyanite Image

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Kyanite

Comments: Two terminated, bright blue crystals of kyanite in a white quartz matrix.
Location: Barra do Salinas, Minas Gerais, Brazil. Scale: 9.5 x 4 x 4 cm.
© Isaias Casanova / IC Minerals
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Kyanite

Comments: Cluster of 4, green, gemmy, fluorescent blades of kyanite.
Location: Pech, Afghanistan. Scale: 1.7 x 1.0 x 0.3 cm.
© Kieth Hayes

Kyanite Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =0.9066:1:0.7106
Help on Cell Dimensions: Cell Dimensions: a = 7.112, b = 7.844, c = 5.574, Z = 4; alpha = 90.12°, beta = 101.1°, gamma = 105.9° V = 293.46 Den(Calc)= 3.67
Help on Crystal System: Crystal System: Triclinic - PinacoidalH-M Symbol ( 1) Space Group: P1
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.18(1), 1.38(0.75), 3.35(0.65),
Help on Forms: Forms:

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

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Winter J K , Ghose S , American Mineralogist , 64 (1979) p.573-586, Thermal expansion and high-temperature crystal chemistry of the Al2SiO5, polymorphs, T = 25 deg C

View Additional jPOWD Structure files for Kyanite
[1] [10] [11] [12] [2] [3] [4] [5] [6] [7] [8] [9]
 

Physical Properties of Kyanite

Help on Cleavage: Cleavage: {100} Perfect, {010} Imperfect
Help on Color: Color: Blue, White, Gray, Green, Black.
Help on Density: Density: 3.56 - 3.67, Average = 3.61
Help on Diaphaneity: Diaphaneity: Translucent to transparent
Help on Fracture: Fracture: Brittle - Generally displayed by glasses and most non-metallic minerals.
Help on Habit: Habit: Columnar - Forms columns
Help on Habit: Habit: Fibrous - Crystals made up of fibers.
Help on Hardness: Hardness: 4-7
Help on Luminescence: Luminescence: Non-fluorescent.
Help on Luster: Luster: Vitreous - Pearly
Help on Streak: Streak: white
 

Optical Properties of Kyanite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.036 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0.05 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1969,KPDmeas= 0.1999,KC= 0.2074
Ncalc = 1.74 - 1.76
Help on Optical Data: Optical Data: Biaxial (-), a=1.712-1.718, b=1.72-1.725, g=1.727-1.734, bire=0.0150-0.0160, 2V(Calc)=84, 2V(Meas)=82. Dispersion weak, r > v.
Help on Pleochroism (x): Pleochroism (x): colorless or colorless.
Help on Pleochroism (y): Pleochroism (y): colorless or pale blue.
 

Calculated Properties of Kyanite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.57 gm/cc
note: Specific Gravity of Kyanite =3.62 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0083309363
Boson Index = 0.9916690637
Help on Photoelectric: Photoelectric: PEKyanite = 1.64 barns/electron
U=PEKyanite x rElectron Density= 5.85 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Kyanite is Not Radioactive
 

Kyanite Classification
Help on Dana Class: Dana Class: 52.02.02c.01 (52)Nesosilicate Insular SiO4 Groups and O, OH, F, and H2O
  (52.02)with cations in [4] and >[4] coordination
  (52.02.02c)Al2SiO5 (Kyanite subgroup)
 
52.02.02c.01 Kyanite Al2SiO5=Al[6]Al[6]OSiO4 P1 1
Help on Strunz Class: Strunz Class: 09.AF.15 09 - SILICATES (Germanates)
  09.A - Nesosilicates
  09.AF -Nesosilicates with additional anions;
 
09.AF.15 Kyanite Al2SiO5=Al[6]Al[6]OSiO4 P1 1
 

Other Kyanite Information
Help on See Also: See Also: Links to other databases for Kyanite :
1 - Am. Min. Crystal Structure Database
2 - Amethyst Galleries' Mineral Gallery
3 - Athena
4 - Glendale Community College
5 - Google Images
6 - Google Scholar
7 - Handbook of Mineralogy (MinSocAm)
8 - Handbook of Mineralogy (UofA)
9 - HyperPhysics
10 - MinDAT
11 - MinMax(Deutsch)
12 - MinMax(English)
13 - Mineralienatlas (Deutsch)
14 - Minerals in Thin Section-University of North Carolina
15 - Minerals in Thin Sections-Humboldt State
16 - Philatelic Mineralogy
17 - QUT Mineral Atlas
18 - Ruff.Info
19 - Scandinavian mineral gallery
20 - Thin Sections - Brock University
21 - Tradeshop.com - The Rainbow of Gems
22 - UCLA - Petrography Thin-Sections
23 - University of Colorado - Mineral Structure Data
24 - WWW-MINCRYST
25 - YupRocks
26 - theimage

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Kyanite

Al2SiO5 = Al[6]Al[6]OSiO4
Dana No: 52.02.02c.01 Strunz No: 09.AF.15
Locality:

 

Notes: