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Yakhontovite

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Yakhontovit
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Yakhontovit

türkisfarbene Massen von Yakhontovit, Alluaiv, Lovozero, Kola, Russland; BB 2 mm, analysiert

Copyright: MinTreasure.com (Carsten Slotta)
Contribution: openpit 2020-02-15
Locality: Alluaiv / Lovozero / Kola-Halbinsel / Murmansk, Oblast / Nordwestrussland, Föderationskreis / Russland

Collectors Summary

Color Pistachio grün
Streak color hellgrün
Hardness (Mohs) 2.5
Solubility +++ NH4OH, dispergiert in H2O
Crystal System monoklin,

Chemism

Chem­ical formula

(Ca,Na,K)0.3(CuFe2+Mg)2Si4O10(OH)2·3H2O

Chem­ical com­po­si­tion

Calcium, Eisen, Kupfer, Magnesium, Natrium, Silicium, Kalium, Sauerstoff, Wasserstoff

Unit weight: 658.246406618 u; Number of atoms in the formula: 33.3

Info

Empirical formula:

(Ca0.6Na0.3K0.1)0.3(CuFeMg)2Si4O10(OH)2·3H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

1.23

8

24.02

1.0079470

8.0635760

Oxygen

O

36.46

15

45.05

15.9994300

239.9914500

Sodium

Na

0.31

0.09

0.27

22.9897702

2.0690793

Magnesium

Mg

7.38

2

6.01

24.3050600

48.6101200

Silicon

Si

17.07

4

12.01

28.0855300

112.3421200

Potassium

K

0.18

0.03

0.09

39.0983100

1.1729493

Calcium

Ca

1.10

0.18

0.54

40.0784000

7.2141120

Iron

Fe

16.97

2

6.01

55.8452000

111.6904000

Copper

Cu

19.31

2

6.01

63.5463000

127.0926000

Strunz 9th edi­tion incl. updates

9.EC.40

9: Silikate (Germanate)
E: Schichtsilikate (Phyllosilikate)
C: Schichtsilikate (Phyllosilikate) mit Glimmer Tafeln, zusammengesetzt aus tetrahedralen oder octahedralen Netzen
40:Montmorillonit-Gruppe

Lapis Clas­sifica­tion

VIII/H.19-070

VIII: SILIKATE
H: Schichtsilikate
19: Tonminerale, regulär geschichtet; Glimmerartige Schicht-silikate mit Baugruppen [Si4O10] 4- und verwandte Strukturen; Montmorillonit-Gruppe

Clas­sifica­tion by Hölzel

9.EI.400

9: SILICATES
E: Phyllosilicates
I: Montmorillonite-Saponite-Group

Dana 8th edi­tion

71.03.01b.07

71: Phyllosilicate Minerals
03: Phyllosilicates Phyllosilicate Sheets of Six-Membered Rings with 2:1 clays
01b: Smectite group (Trioctahedral Smectites)

IMA sta­tus

Anerkannt von der CNMNC

Min­eral sta­tus

anerkanntes Mineral

Optical Properties

Color

Pistachio grün

Streak color

hellgrün

Diaphane­ity (Trans­parency)

transparent

max. Birefrin­gence

0.025

Birefringence chart\! Yakhontovite title=Birefringence chart Yakhontovite

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

1.538

RI value γ / ε

1.565

Ri mean

1.547

2V angle

Uniaxial (+)

Crystallography

Crystal Sys­tem

monoklin

Cell param­e­ters a (Å)

5.20

Cell param­e­ters b (Å)

-

Cell param­e­ters c (Å)

14.41

Cell param­e­ters a/b or c/a

2.771

Cell param­e­ters c/b

-

Cell param­e­ters α

90°

Cell param­e­ters β

90°

Cell param­e­ters γ

120°

Z

0.

Volumne (ų)

337.4

X-Ray Pow­der Diffrac­tion

13.9(0),
7.30(0),
4.5(0),
3.2(0),
2.88(0)

XRD chart Yakhontovite

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

Physical Properties

Hard­ness (Mohs)

2.5

VHN (Hard­ness Vick­ers)

53 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

2.48 (berechnet)

Insta­bil­ity

+++ NH4OH, dispergiert in H2O

Preface

Author (Name, Year)

Postnikova & Tsipurskiy & Sidorenko & Mokhov, 1986

References

Mineralogicheskiy Zhurnal 8 (1986) (6), 80

Related minerals "Strunz Classification" (9. Edition) [Mineral | Chemical formula | Crystal system : Class (H-M) : Space Group | Indenture number]

Saponite

(Ca,Na)0.3(Mg,Fe2+)3(Si,Al)4O10(OH)2·4H2O

9.EC.40

'Hectorite'

Na0.3(Mg,Li)3Si4O10(F,OH)2

9.EC.40

Beidellite

(Na,Ca0.5)0.3Al2(Si,Al)4O10(OH)2·4H2O

9.EC.40

Nontronite

Na0.3Fe23+(Si,Al)4O10(OH)2·4H2O

9.EC.40

Kurumsakite

(Zn,Ni,Cu)8Al8V2Si5O35·27H2O

9.EC.40

Swinefordite

(Ca,Na)0.3(Al,Li,Mg)2(Si,Al)4O10(OH,F)2·2H2O

9.EC.40

Volkonskoite

Ca0.3(Cr3+,Mg,Fe3+)2(Si,Al)4O10(OH)2·4H2O

9.EC.40

Yakhontovite

(Ca,Na,K)0.3(CuFe2+Mg)2Si4O10(OH)2·3H2O

9.EC.40

Montmorillonite

(Na,Ca)0.3(Al,Mg)2Si4O10(OH)2·nH2O

monoklin : 2/m : C2/m

9.EC.40

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

Brinrobertsite

(Na,K,Ca)0.3(Al,Fe,Mg)4(Si,Al)8O20(OH)4·3.5H2O

VIII/H.19-010

Montmorillonite

(Na,Ca)0.3(Al,Mg)2Si4O10(OH)2·nH2O

monoklin : 2/m : C2/m

VIII/H.19-020

Beidellite

(Na,Ca0.5)0.3Al2(Si,Al)4O10(OH)2·4H2O

VIII/H.19-030

Nontronite

Na0.3Fe23+(Si,Al)4O10(OH)2·4H2O

VIII/H.19-040

Volkonskoite

Ca0.3(Cr3+,Mg,Fe3+)2(Si,Al)4O10(OH)2·4H2O

VIII/H.19-050

Swinefordite

(Ca,Na)0.3(Al,Li,Mg)2(Si,Al)4O10(OH,F)2·2H2O

VIII/H.19-060

Yakhontovite

(Ca,Na,K)0.3(CuFe2+Mg)2Si4O10(OH)2·3H2O

VIII/H.19-070

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

Yakhontovite

(Ca,Na,K)0.3(CuFe2+Mg)2Si4O10(OH)2·3H2O

9.EI.400

Volkonskoite

Ca0.3(Cr3+,Mg,Fe3+)2(Si,Al)4O10(OH)2·4H2O

9.EI.440

Related minerals "Dana 8. Classification" [Mineral | Chemical formula : Crystal system : Class (H-M) | Space Group | Indenture number]

Montmorillonite

(Na,Ca)0.3(Al,Mg)2Si4O10(OH)2·nH2O

monoklin : 2/m : C2/m

71.03.01a.02

Volkonskoite

Ca0.3(Cr3+,Mg,Fe3+)2(Si,Al)4O10(OH)2·4H2O

71.03.01a.04

Ferrosaponite

Ca0.3(Fe2+,Mg,Fe3+)3[(OH)2|(Si,Al)Si3O10]·4H2O

71.03.01b.02a

Hedenbergite

CaFe2+Si2O6

monoklin : 2/m : C2/c

71.03.01b.04

Yakhontovite

(Ca,Na,K)0.3(CuFe2+Mg)2Si4O10(OH)2·3H2O

71.03.01b.07

Zincsilite

Zn3Si4O10(OH)2·4H2O

71.03.01b.08

Other languages

German

Yakhontovit

Spanish

Yakhontovita

English

Yakhontovite

French

Yakhontovite

Russian

Яхонтовит

Simplified Chinese

雅洪托夫石

IMA Number

IMA 1984-032a

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

German pages

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

English pages

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

Russian pages

Webmineral.ru - search for: Яхонтовит

Mineral Dealer

German pages

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

Locations with GPS information