Cryptophyllite Mineral Data

General Cryptophyllite Information

Chemical Formula:

K2Ca[Si4O10]•5H2O

Composition:

Molecular Weight = 480.69 gm

Potassium 16.27 % K 19.60 % K₂O

Calcium 8.34 % Ca 11.67 % CaO

Silicon 23.37 % Si 50.00 % SiO₂

Hydrogen 2.10 % H 18.74 % H₂O

Oxygen 49.93 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

K₂CaSi₄O₁₀•5(H₂O)

Environment:

New structure type

IMA Status:

Proposed IMA 2009

Locality:

Tsentral’nyi mine, Khibiny alkaline complex, Kola Peninsula, Russia Link to MinDat.org Location Data.

Name Origin:

Commission on New Minerals, Nomenclature and Classification (CNMNC)

Synonym:

IMA2008-061

Search for Cryptophyllite Images

Images:

Image not yet available on Webmineral.com

Try searching images.google.com or Mindat Picture Gallary for mineral pictures. Caution: The images retrieved may not be appropriate.

Cryptophyllite Crystallography

Axial Ratios:

a:b:c =0.9287:1:4.5891

Cell Dimensions:

a = 6.4934, b = 6.9919, c = 32.087, beta = 94.68° V = 1,451.93

Crystal System:

Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 2₁/n

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 16.01(1), 2.903(0.84), 6.24(0.48),2.995(0.47), 3.197(0.27), 7.98(0.24), 2.623(0.23), 3.228(0.22),

Optical Properties of Cryptophyllite

Optical Data:

Calculated Properties of Cryptophyllite

Fermion Index:

Fermion Index = 0.01
Boson Index = 0.99

Photoelectric:

PE_{Cryptophyllite}= 3.54 barns/electron
U=PE_{Cryptophyllite} x r_electron= . barns/cc.

Radioactivity:

GRapi = 238.29 (Gamma Ray American Petroleum Institute Units)
Concentration of Cryptophyllite per GRapi unit = 0.42 (%)

Estimated Radioactivity from Cryptophyllite - barely detectable

Cryptophyllite Classification

Dana Class:

78.00.00.00 (78)Unclassified Silicate Minerals

(78.00)Without Dana Classification Numbers

(78.00.00)Silicate, Unclassified

78.00.00.00 Almbosite? Fe5Fe4V4Si3O27 Ortho ? Ortho

78.00.00.00 Chelyabinskite* (Ca,Mg)3Si(OH)6(SO4,CO3)2•9(H2O) Unk Ortho

78.00.00.00 Cryptophyllite K2Ca[Si4O10]•5H2O P 2₁/n 2/m

78.00.00.00 IMA2007-041T Na2[Ti4O2(OH)2(SiO4)3]•6H2O R 3m 3m

78.00.00.00 IMA2009-001 Ba5(Ca,REE,Y)22(Ti,Nb)18(SiO4)4[(PO4),(SiO4)]4(BO3)9O22[(OH),F]43(H2O)1.5 R 3 3

78.00.00.00 Iddingsite? MgO.Fe2O3.3SiO2•4(H2O) Ortho

78.00.00.00 Ivanyukite-Cu Cu[Ti4(OH)2O2(SiO4)3]•7H2O P 4 3m 4 3m

78.00.00.00 Ivanyukite-K K2[Ti4(OH)2O2(SiO4)3]•9H2O P 4 3m 4 3m

78.00.00.00 Ivanyukite-Na Na2[Ti4O2(OH)2(SiO4)3]•6H2O P 4 3m 4 3m

78.00.00.00 Plumbophyllite Pb2Si4O10•H2O P bcn 2/m 2/m 2/m

78.00.00.00 Sturtite? (Fe3)(Mn2,Ca,Mg)Si4O10(OH)3•10(H2O) None

Strunz Class:

09.HX.00 09 - SILICATES (Germanates)

09.H - Unclassified Strunz Silicates

09.HX -Silicate, Unclassified

09.HX.00 Iddingsite? MgO.Fe2O3.3SiO2•4(H2O) Ortho

09.HX.00 IMA2007-041T Na2[Ti4O2(OH)2(SiO4)3]•6H2O R 3m 3m

09.HX.00 Plumbophyllite Pb2Si4O10•H2O P bcn 2/m 2/m 2/m

09.HX.00 Cryptophyllite K2Ca[Si4O10]•5H2O P 2₁/n 2/m

Other Cryptophyllite Information

See Also:

Links to other databases for Cryptophyllite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - MinDAT
7 - Mineralienatlas (Deutsch)
8 - Online Mineral Museum
9 - QUT Mineral Atlas
10 - Ruff.Info

Search for Cryptophyllite using:

[AOL] [Bing] [Dog Pile] [GeoScienceWorld] [HotBot] [Ixquick] [Lycos] [MAMMA] [Scirus] [Teoma] [WebCrawler] [Wikipedia] [YAHOO]

Visit our Advertisers for Cryptophyllite :

A Bijoux Google Search for Cryptophyllite
Adam's Minerals Google Search for Cryptophyllite
Cape Minerals Google Search for Cryptophyllite
Dakota Matrix Minerals Google Search for Cryptophyllite
Excalibur Mineral Corp. Google Search for Cryptophyllite
Exceptional Minerals Google Search for Cryptophyllite
John Betts Fine Minerals Search for Cryptophyllite
McDougall Minerals Google Search for Cryptophyllite
Mineral News Website Link
Rock and Mineral Shows Google Search for Cryptophyllite
Weinrich Minerals, Inc. Google Search for Cryptophyllite

Ask about Cryptophyllite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Español

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

Cryptophyllite

K2Ca[Si4O10]•5H2O
Dana No: 78.00.00.00 Strunz No: 09.HX.00
Locality:

Notes: