Kyanite Mineral Data + Say KYANITE


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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 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 Diaphaniety: Diaphaniety: 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
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.
Help on Pleochroism (z): Pleochroism (z): colorless or blue.
 

Calculated Properties of Kyanite

Help on Electron Density: Electron Density:

relectron=3.57 gm/cc
note: rKyanite =3.62 gm/cc.

Help on Fermion Index Fermion Index Fermion Index = 0.00833
Boson Index = 0.99167
Help on Photoelectric: Photoelectric:

PEKyanite = 1.64 barns/electron
U=PEKyanite x relectron= 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: 52.2.2c.1 (52)Nesosilicate Insular SiO4 Groups and O, OH, F, and H2O
  (52.2)with cations in [4] and >[4] coordination
  (52.2.2c)Al2SiO5 (Kyanite subgroup)
 
52.2.2c.1 Kyanite Al2SiO5=Al[6]Al[6]OSiO4 P1 1
Help on  Strunz Class: Strunz Class: VIII/B.02-40 VIII - Silicates
  VIII/B - Nesosubsilicates, with anions unfamiliar to tetraheders, cations of octahedral and tetrahedral orientation [4/6]
  VIII/B.02 - Disthene series
 
VIII/B.02-10 Sillimanite Al2SiO5=Al[6]Al[4]OSiO4 P nma 2/m 2/m 2/m
 
VIII/B.02-20 Andalusite Al2SiO5=Al[6]Al[5]OSiO4 Pnnm 2/m 2/m 2/m
 
VIII/B.02-30 Kanonaite (Mn,Al)AlSiO5 Pnnm 2/m 2/m 2/m
 
VIII/B.02-40 Kyanite Al2SiO5=Al[6]Al[6]OSiO4 P1 1
 
VIII/B.02-50 Mullite Al(42x)Si(2-2x)O(10-x)wherex=0.17to0.59 Pbam 2/m 2/m 2/m
 
VIII/B.02-60 Yoderite Mg2(Al,Fe)6Si4O18(OH)2 P 21 2
 
VIII/B.02-70 Topaz Al2SiO4(F,OH)2 Pbnm 2/m 2/m 2/m
 

Other Kyanite Information

Help on References: References: NAME( Duda&Rejl90) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Heinrich65)
Help on See Also: See Also: Links to other databases for Kyanite :
1 -Am. Min. Crystal Structure Database 2 - Amethyst Galleries' Mineral Gallery 3 - Applied Mineralogy 4 -Athena 5 - Crocoite.com Mineral Locations 6 - Glendale Community College 7 -Google Images 8 -Google Scholar 9 -Handbook of Mineralogy (MinSocAm) 10 -Handbook of Mineralogy (UofA) 11 - HyperPhysics 12 -MinDAT 13 -MinMax(Deutsch) 14 -MinMax(English) 15 -Mineralienatlas (Deutsch) 16 - Minerals in Thin Section-University of North Carolina 17 -Minerals in Thin Sections-Humboldt State 18 - Minerals of Wisconsin 19 - Philatelic Mineralogy 20 -QUT Mineral Atlas 21 - Scandinavian mineral gallery 22 - Thin Sections - Brock University 23 - Tradeshop.com - The Rainbow of Gems 24 - UCLA - Petrography Thin-Sections 25 -University of Colorado - Mineral Structure Data 26 - University of Manchester - Mineral Structure 27 -University of Minnesota 28 - WWW-MINCRYST 29 - YupRocks 30 -theimage

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

Kyanite

Al2SiO5 = Al[6]Al[6]OSiO4
Dana No: 52.2.2c.1 Strunz No: VIII/B.02-40
Locality:

 

Notes:

 

 
   
 
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