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Volkonskoite

Pictures (6 Images total)

Volkonskoit
Views (Image: 1264182826): 1807
Volkonskoit

Größe: 40x35 mm; Fundort: Efimyaty-Gebirge, Efimyaty, Okhansk, Permskaya Oblast, Ural, Russland

Copyright: Paul Bongaerts
Contribution: slugslayer 2010-01-22
Locality: Efimyaty-Gebirge / Efimyaty / Ochansk (Okhansk) / Perm, Region (Пе́рмский край) / Wolga, Föderationskreis / Russland
Volkonskoit
Views (Image: 1428870325): 858
Volkonskoit (SNr: A033566)

Derbes grünes Spaltstück, BB = 5,5 mm; Fundort: Efimyaty, Okhansk, Permskaya Oblast, Ural, Russland.

Collection: Lithothek der Münchener Micromounter
Copyright: Bebo
Contribution: Münchener Micromounter 2015-04-12
Locality: Efimyaty / Ochansk (Okhansk) / Perm, Region (Пе́рмский край) / Wolga, Föderationskreis / Russland
Volkonskoit
Views (Image: 1326809180): 1329
Volkonskoit (SNr: 1897)

Volkonskoit mit Rubin und Fuchsit; BB=4 cm; Froland/Norwegen

Collection: Reinhold
Copyright: Reinhold
Contribution: Reinhold 2012-01-17
Locality: Froland / Agder, Provinz / Norwegen
Volkonskoit
Views (Image: 1478108268): 805
Volkonskoit

auf einer Kluftfläche, Größe: 4 x 5cm; Fundort: Stbr.Faber II/Wilsdruff/Sächs.Schweiz-Osterzgeb., Landkreis/Sachsen

Collection: steinfried
Copyright: steinfried
Contribution: steinfried 2016-11-02
Locality: Steinbruch Faber II / Wilsdruff / Sächsische Schweiz-Osterzgebirge, Landkreis / Sachsen / Deutschland
Volkonskoit
Views (Image: 1574021058): 257
Volkonskoit  D

(Var. v. Nontronit). Kürn, Regensburg, Landkreis; Oberpfalz, Bezirk; Bayern. BB: 6cm.

Collection: Doc Diether
Copyright: Doc Diether
Contribution: Doc Diether 2019-11-17
Locality: Kürn / Regensburg, Landkreis / Oberpfalz, Bezirk / Bayern / Deutschland
grünes Volkonskoit neben farblosen Melanophlogit xx
Views (Image: 1612709243): 62
grünes Volkonskoit neben farblosen Melanophlogit xx (SNr: 2519a)

MM-Stufe; Fortullino, Rosignano Marittimo, Livorno, Toskana, IT

Collection: Systemer
Copyright: Systemer
Contribution: Systemer 2021-02-07
Locality: Fortullino / Rosignano Marittimo / Livorno, Provinz / Toskana (Toscana) / Italien

Collectors Summary

Color gelb, olivgrün, hellgrün
Streak color blau grün
Hardness (Mohs) 1.5
Solubility +++ heiße konz. HCl
Crystal System monoklin,

Chemism

Chem­ical formula

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

Chem­ical com­po­si­tion

Aluminium, Calcium, Chrom, Eisen, Magnesium, Silicium, Sauerstoff, Wasserstoff

Unit weight: 477.4794662 u; Number of atoms in the formula: 32.3

Info

Empirical formula:

Ca0.3(Cr0.6Mg0.3Fe0.1)2(Si0.75Al0.25)4O10(OH)2·4H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

2.11

10

30.96

1.0079470

10.0794700

Oxygen

O

53.61

16

49.54

15.9994300

255.9908800

Magnesium

Mg

3.05

0.6

1.86

24.3050600

14.5830360

Aluminium

Al

5.65

1

3.10

26.9815382

26.9815382

Silicon

Si

17.65

3

9.29

28.0855300

84.2565900

Calcium

Ca

2.52

0.3

0.93

40.0784000

12.0235200

Chromium

Cr

13.07

1.2

3.72

51.9961600

62.3953920

Iron

Fe

2.34

0.2

0.62

55.8452000

11.1690400

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.19-050

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.440

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

Dana 8th edi­tion

71.03.01a.04

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

IMA sta­tus

Neudefinition von der CNMNC anerkannt

Min­eral sta­tus

anerkanntes Mineral

Optical Properties

Color

gelb, olivgrün, hellgrün

Streak color

blau grün

Diaphane­ity (Trans­parency)

teilweise opak

max. Birefrin­gence

0.025

Birefringence chart\! Volkonskoite title=Birefringence chart Volkonskoite

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

1.54

RI value γ / ε

1.515

Ri mean

1.532

2V angle

Uniaxial (-)

Crystallography

Crystal Sys­tem

monoklin

Cell param­e­ters a (Å)

5.16

Cell param­e­ters b (Å)

8.94

Cell param­e­ters c (Å)

14.4

Cell param­e­ters a/b or c/a

0.577

Cell param­e­ters c/b

1.611

Cell param­e­ters α

90°

Cell param­e­ters β

90°

Cell param­e­ters γ

120°

Z

2

Volumne (ų)

664.278

X-Ray Pow­der Diffrac­tion

15.1(100),
5.32(10),
5.06(10),
4.49(50),
3.34(30),
3.017(30),
2.60(30),
2.56(30)

XRD chart Volkonskoite

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

Physical Properties

Hard­ness (Mohs)

1.5

VHN (Hard­ness Vick­ers)

18 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

2.29 (berechnet)

2.387 ( ρ calc. Mineralienatlas )

Insta­bil­ity

+++ heiße konz. HCl

Preface

Author (Name, Year)

Kämmerer, 1831

References

Clays and Clay Minerals 35 (1987) 139

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

Volkonskoit

English

Volkonskoite

French

Volkonskoite

Spanish

Volkonskoíta

Russian

Волконскоит

Alternative Name

Wolchonskoit

Wolchonskoita

Wolchonskoite

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

German pages

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

English pages

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RRUFF - References and PDF downloads - search for: Volkonskoite
American-Mineralogist-Crystal-Structure-Database - search for: Volkonskoite
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Russian pages

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German pages

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