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Cryptophyllite

Additional Functions

Collectors Summary

Cleavages vollkommen (100
Crystal System monoklin, P21/n

Chemism

Chemical formula

K2Ca[Si4O10]·5H2O

Chemical composition

Calcium, Silicium, Kalium, Sauerstoff, Wasserstoff

Unit weight: 480.68806 u; Number of atoms in the formula: 32

Info

Empirical formula:

K2Ca[Si4O10]·5H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

2.10

10

31.25

1.0079470

10.0794700

Oxygen

O

49.93

15

46.88

15.9994300

239.9914500

Silicon

Si

23.37

4

12.50

28.0855300

112.3421200

Potassium

K

16.27

2

6.25

39.0983100

78.1966200

Calcium

Ca

8.34

1

3.13

40.0784000

40.0784000

Strunz 9th edition incl. updates

9.

9: Silikate (Germanate)

Lapis Classification

VIII/H.15-050

VIII: SILIKATE
H: Schichtsilikate
15: Glimmerartige Schicht-silikate mit Baugruppen [Si4O10] 4- und verwandte Strukturen;

Classification by Hölzel

9.ES.180

9: SILICATES
E: Phyllosilicates
S: Phyllosilicates with tetrahedral Doublelayers

IMA status

Anerkannt: Neue Mineralien - IMA WEB-Seite, Februar 2009.

Mineral status

anerkanntes Mineral

Optical Properties

max. Birefringence

0.007

Birefringence chart\! Cryptophyllite title=Birefringence chart Cryptophyllite

Michel-Levy Color Chart viewed according to the maximum birefringence (at 30μm). Mineral color is not taken into account. Click on the image to enlarge or change thickness.

RI value α / ω / n

1.520

RI value β

1.523

RI value γ / ε

1.527

Ri mean

1.523

2V angle

Biaxial (+) 70°

Crystallography

Crystal System

monoklin

Class (H-M)

2/m

Space Group number

14

Space Group

P21/n

Cell parameters a (Å)

6.493

Cell parameters b (Å)

6.992

Cell parameters c (Å)

32.087

Cell parameters a/b or c/a

0.929

Cell parameters c/b

4.589

Cell parameters α

90°

Cell parameters β

94.68

Cell parameters γ

90°

Z

4

Volumne (ų)

1451.863

Kristall structure

neuer Strukturtyp

X-Ray Powder Diffraction

16.01(100), 7.98(24), 6.24(48), 3.228(22), 3.197(27), 2.995(47), 2.903(84), 2.623(23)

XRD chart Cryptophyllite

Calculated from d-spacing and intensity at 0.1541838 nm (Cu)

Crystals 3D

Open larger view

Crystal Structure 3D

Open larger view

Physical Properties

Density (g/cm³)

2.185 (berechnet)

2.199 ( ρ calc. Mineralienatlas )

Cleavages

vollkommen (100

Preface

Name from

altgriechisch κρυπτός (kryptos) für verborgen oder geheim und φύλλον (phyllon) für Blatt, zusammengesetzt und mit dem für Mineral typischen Anhang -it versehen: Kryptophyllit

Author (Name, Year)

Igor V. Pekov, N. V. Zubkova, Ya. E. Filinchuk, N. V. Chukanov, A. E. Zadov, D. Yu. Pushcharovsky, E. R. Gobechiya; 2008

References

Shlykovite KCa[Si4O9(OH)] · 3H2O and cryptophyllite K2Ca[Si4O10] · 5H2O, new mineral species from the Khibiny alkaline pluton, Kola Peninsula, Russia In: Geology of Ore Deposits, Band 52 (2010), S. 767-777

Anerkannt: Neue Mineralien - IMA WEB-Seite, Februar 2009.

Related minerals "Lapis Classification" [Mineral | Chemical formula | Crystal system : Class (H-M) : Space Group | Indenture number]

Agrellite

NaCa2Si4O10F

triklin : 1 : P1

VIII/H.15-010

Glagolevite

NaMg6[(OH,O)8|AlSi3O10]·H2O

triklin : 1 : C1

VIII/H.15-020

Shlykovite

KCa[Si4O9(OH)]·3H2O

monoklin : 2/m : P21/c

VIII/H.15-040

Cryptophyllite

K2Ca[Si4O10]·5H2O

monoklin : 2/m : P21/n

VIII/H.15-050

Related minerals "Hoelzel Classification" [Mineral | Chemical formula : Crystal system : Class (H-M) | Space Group | Indenture number]

Fedorite

(Na,K)2-3(Ca,Na)7[Si4O8(F,Cl,OH)2|(Si4O10)3]·3.5H2O

triklin : 1 : P1

9.ES.100

Delhayelite

K7Na3Ca5Al2Si14O38F4Cl2

orthorhombisch : mmm : Pmmn

9.ES.110

Hydrodelhayelite

KCa2AlSi7O17(OH)2·6H2O

orthorhombisch : mm2 : Pnm21

9.ES.115

Hillesheimite

(K,Ca,Ba,☐)2(Mg,Fe,Ca,☐)2[(Si,Al )13O23(OH)6](OH)·8H2O

orthorhombisch : mmm : Pmmn

9.ES.116

Günterblassite

(K,Ca,Ba,Na,☐)3Fe[(Si,Al)13O25(OH,O)4]·7H2O

orthorhombisch : mm2 : Pnm21

9.ES.117

Rhodesite

KHCa2Si8O19·5H2O

orthorhombisch : mmm : Pmcm

9.ES.120

Fivegite

K4Ca2[AlSi7O17(O2-xOHx)][(H2O)2-xOHx]Cl {x=0-2}

orthorhombisch : mm2 : Pm21n

9.ES.125

Macdonaldite

BaCa4Si16O36(OH)2·10H2O

orthorhombisch : mmm : Cmcm

9.ES.130

Monteregianite-(Y)

KNa2YSi8O19·5H2O

monoklin : 2/m : P21/n

9.ES.150

Mountainite

KNa2Ca2[Si8O19(OH)]·6H2O

monoklin : 2/m : P21/a, P21/c, P21/n

9.ES.170

Cryptophyllite

K2Ca[Si4O10]·5H2O

monoklin : 2/m : P21/n

9.ES.180

Shlykovite

KCa[Si4O9(OH)]·3H2O

monoklin : 2/m : P21/c

9.ES.185

Other languages

English

Cryptophyllite

German

Kryptophyllit

Russian

Криптофиллит

Alternative Name

German

Cryptophyllit

IMA Number

IMA 2008-061

Automatic Links to external internet sources (Responsibility is with the operator)

German pages

DeWikiPedia - search for: Kryptophyllit
Google-Bilder-Suche - search for: Kryptophyllit
Mineralogisch-Petrographisches-Institut Hamburg - search for: Kryptophyllit

English pages

Mindat - search for: Cryptophyllite
Webmineral - search for:Cryptophyllite
Handbook-of-Mineralogy - search for: Cryptophyllite
RRUFF - Raman, XRD and other mineral data - search for: Cryptophyllite
RRUFF - References and PDF downloads - search for: Cryptophyllite
American-Mineralogist-Crystal-Structure-Database - search for: Cryptophyllite
Athena - search for: Cryptophyllite

Russian pages

Webmineral.ru - search for: Криптофиллит

Mineral Dealer

German pages

hausen - Mineralgroßhandel - search for: Kryptophyllit
Crystal-Treasure.com - search for: Kryptophyllit
Bosse - search for: Kryptophyllit



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