Kostylevite Mineral Data

Kostylevite Mineral Data
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General Kostylevite Information

Help on Chemical Formula: Chemical Formula: K2ZrSi3O9•(H2O)
Help on Composition: Composition: Molecular Weight = 415.69 gm
   Potassium  18.81 %  K    22.66 % K2O
   Zirconium  21.95 %  Zr   29.64 % ZrO2
   Silicon    20.27 %  Si   43.36 % SiO2
   Hydrogen    0.48 %  H     4.33 % H2O
   Oxygen     38.49 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: K2•(H2O)ZrSi3O9
Help on Environment: Environment: Alkalic pegmatite intergrown with umbite and wadeite.
Help on IMA Status: IMA Status: Approved IMA 1983
Help on Locality: Locality: Yuonnemiok River Valley, eastern Khibiny Massif, Kola Peninsula, Russa. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Yekaterina Eutikhievna Kostyleva-Labuntsova (1894-1974), Russian Mineralogist.
Help on Name Pronunciation: Name Pronunciation: Kostylevite + Pronunciation Say KOSTYLEVITE
Help on Synonym: Synonym: ICSD 20147
  PDF 37-459
 

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Kostylevite Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =1.124:1:0.5602
Help on Cell Dimensions: Cell Dimensions: a = 13.171, b = 11.717, c = 6.565, Z = 4; beta = 105.26° V = 977.42 Den(Calc)= 2.82
Help on Crystal System: Crystal System: Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 21/a
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.087(1), 5.6(0.6), 3.336(0.53),
Click Here for Large Kostylevite Structure Window Crystal Structure:

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Ilyukhin V V , Khomyakov A P , Shumyatskaya N G , Voronkov A A , Nevskii N N , Belov N V , Soviet Physics Doklady , 26 (1981) p.118-120, The crystal structure of the new natural zirconosilicate K4Zr2Si6O18*2H2O, Locality: Khibinsk massif, Kola Peninsula, Russia, Note: dimorphic with umbite, Note: y(O7) corrected

 

Physical Properties of Kostylevite

Help on Cleavage: Cleavage: {110} Perfect
Help on Color: Color: Colorless, Light yellow.
Help on Density: Density: 2.74
Help on Diaphaneity: Diaphaneity: Transparent
Help on Hardness: Hardness: 5 - Apatite
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white
 

Optical Properties of Kostylevite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.035 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= -0.006 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2131,KPDmeas= 0.2193,KC= 0.2119
Ncalc = 1.58 - 1.6
Help on Optical Data: Optical Data: Biaxial (?), a=1.595, b=1.598, g=1.61, bire=0.0150, 2V(Calc)=54, 2V(Meas)=48.
 

Calculated Properties of Kostylevite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.74 gm/cc
note: Specific Gravity of Kostylevite =2.82 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.03
Boson Index = 0.97
Help on Photoelectric: Photoelectric: PEKostylevite = 31.74 barns/electron
U=PEKostylevite x relectron= 86.98 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 263.80 (Gamma Ray American Petroleum Institute Units)
Concentration of Kostylevite per GRapi unit = 0.38 (%)

Estimated Radioactivity from Kostylevite - barely detectable

 

Kostylevite Classification
Help on Dana Class: Dana Class: 59.02.01.03 (59)Cyclosilicate Three-Membered Rings
  (59.02)hydrated
  (59.02.01)Umbite and related species
 
59.02.01.01 Umbite K2ZrSi3O9•(H2O) P 212121 2 2 2
 
59.02.01.02 Paraumbite K3Zr2HSi6O18•n(H2O)n=3to7 Unk Ortho
 
59.02.01.03 Kostylevite K2ZrSi3O9•(H2O) P 21/a 2/m
Help on Strunz Class: Strunz Class: 09.CJ.35 09 - SILICATES (Germanates)
  09.C - Cyclosilicates
  09.CJ -[Si6O18]12- 6-membered single rings (sechser-Einfachringe),
 
09.CJ.35 Kostylevite K2ZrSi3O9•(H2O) P 21/a 2/m
 

Other Kostylevite Information
Help on References: References: NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Kostylevite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - Google Images
6 - Google Scholar
7 - Handbook of Mineralogy (MinSocAm)
8 - Handbook of Mineralogy (UofA)
9 - MinDAT
10 - MinMax(Deutsch)
11 - MinMax(English)
12 - Mineralienatlas (Deutsch)
13 - QUT Mineral Atlas
14 - Ruff.Info
15 - WWW-MINCRYST

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Kostylevite

K2ZrSi3O9•(H2O)
Dana No: 59.02.01.03 Strunz No: 09.CJ.35
Locality:

 

Notes: