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Hydroxycancrinite

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Hydroxycancrinit
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Hydroxycancrinit

derber, blauer Hydoxycancrinit mit Aegirin und Eudialyt,; Bildbreite 2,5 cm; Fundort: Lovozero, Alluaiv Mt.

Collection: uwe
Copyright: uwe
Contribution: uwe 2015-11-06
Locality: Alluaiv / Lovozero / Kola-Halbinsel / Murmansk, Oblast / Nordwestrussland, Föderationskreis / Russland

Collectors Summary

Color farblos, hellblau
Streak color weiß
Hardness (Mohs) 5.00 - 6.00
Cleavages vollkommen {001}
Fracture treppenartig
Solubility +++ Säuren
Crystal System hexagonal, P63

Chemism

Chem­ical formula

(Na,Ca,K)8(Al6Si6O24)(OH,CO3)2·2H2O

Chem­ical com­po­si­tion

Aluminium, Calcium, Natrium, Silicium, Kalium, Kohlenstoff, Sauerstoff, Wasserstoff

Unit weight: 1043.75268266 u; Number of atoms in the formula: 55

Info

Empirical formula:

(Na0.6Ca0.3K0.1)8(Al6Si6O24)((OH)0.75(CO3)0.25)2·2H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

0.53

5.5

10.00

1.0079470

5.5437085

Carbon

C

0.58

0.5

0.91

12.0107800

6.0053900

Oxygen

O

44.45

29

52.73

15.9994300

463.9834700

Sodium

Na

10.57

4.8

8.73

22.9897702

110.3508970

Aluminium

Al

15.51

6

10.91

26.9815382

161.8892292

Silicon

Si

16.14

6

10.91

28.0855300

168.5131800

Potassium

K

3.00

0.8

1.45

39.0983100

31.2786480

Calcium

Ca

9.22

2.4

4.36

40.0784000

96.1881600

Anal­y­sis wt%

Na2O : 23.43, K2O : 0.45, CaO : 0.92, Al2O3 : 31.15, SiO2 : 36.32, CO2 : 1.59, H2O : 5.41 (Ref: Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva, 1904-1974 92)

Strunz 9th edi­tion incl. updates

9.FB.05

9: Silikate (Germanate)
F: Gerüstsilikate (Tektosilikate) ohne zeolithisches H2O
B: Gerüstsilikate (Tektosilicates) mit weiteren [Anionen]
05:Cancrinit-Gruppe

Lapis Clas­sifica­tion

VIII/J.09-005

VIII: SILIKATE
J: Gerüstsilikate (mit Zeolithen)
9: Mit tetraederfremden Anionen; Cancrinit-Gruppe

Clas­sifica­tion by Hölzel

9.FE.160

9: SILICATES
F: Tektosilicates
E: Hexagonal or trigonal with other Anions
1: Cancrinite-Group - hexagonal, axis for a~~12A and c~~5A

Dana 8th edi­tion

76.02.05.08

76: Tektosilicates Tectosilicate Al-Si Framework
02: Tektosilicates Tectosilicate Al-Si Framework Feldspathoids and related species
05: Cancrinite group

IMA sta­tus

Anerkannt von der CNMNC

Min­eral sta­tus

anerkanntes Mineral

IMA Classification

IMA Clas­sifica­tion

Cancrinit–Sodalit supergroup  ⇒ Cancrinite Group  ⇒ Cancrinite Subgroup

Optical Properties

Color

farblos, hellblau

Streak color

weiß

max. Birefrin­gence

0.007

Birefringence chart\! Hydroxycancrinite title=Birefringence chart Hydroxycancrinite

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

1.494

RI value γ / ε

1.501

Ri mean

1.496

2V angle

Uniaxial (+)

Crystallography

Crystal Sys­tem

hexagonal

Class (H-M)

6

Space Group number

173

Space Group

P63

Cell param­e­ters a (Å)

12.74

Cell param­e­ters b (Å)

-

Cell param­e­ters c (Å)

5.183

Cell param­e­ters a/b or c/a

0.407

Cell param­e­ters c/b

-

Cell param­e­ters α

90°

Cell param­e­ters β

90°

Cell param­e­ters γ

120°

Z

1

Volumne (ų)

728.535

X-Ray Pow­der Diffrac­tion

6.43(20),
4.70(60),
4.17(20),
3.68(70),
3.26(100),
2.756(50),
2.592(20),
2.433(30)

XRD chart Hydroxycancrinite

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

Crystals 3D

Open larger view

Physical Properties

Hard­ness (Mohs)

5.00 - 6.00

VHN (Hard­ness Vick­ers)

730 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

2.32 (gemessen)

2.379 ( ρ calc. Mineralienatlas )

Cleav­ages

vollkommen {001}

Frac­ture

treppenartig

Tenac­ity

spröde

Insta­bil­ity

+++ Säuren

Preface

Author (Name, Year)

Khomyakov & Nadezhina & Rastsvetaeva & Pobedimskaya, 1992

References

Zapiski Vserossiskogo Mineralogicheskogo Obshchetstva 121 (1992) (1), 100

IMA group assignments




 
 
 
 
Na6Ca2Al6Si6O24(CO3)2
hexagonal
P63

 
 
 
 
Na7Al5Si7O24(CO3)·3H2O
hexagonal
P63mc

 
 
 
 
(Na,Ca,K)8(Al6Si6O24)(OH,CO3)2·2H2O
hexagonal
P63

 
 
 
 
Na6K2Si6Al6O24(SO4)·2H2O
hexagonal
P63

 
 
 
 
Na8(Al6Si6)O24(SO4)·2H2O
hexagonal
P63

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Actuality: 21. Jun 2022 - 22:56:44

Other languages

Spanish

Hidroxicancrinita

German

Hydroxycancrinit

French

Hydroxycancrinite

English

Hydroxycancrinite

Russian

Гидроксиканкринит

Alternative Name

Spanish

Hydroxycancrinita

English

Hydroxylvishnevite

CNMNC (IMA)-Number

IMA 1990-014

CNMNC symbol

Symbol

Hccn

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

German pages

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Russian pages

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German pages

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