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Ferrokinoshitalite

Collectors Summary

Color dunkelgrün
Streak color grün
Lustre Glasglanz
Hardness (Mohs) 3
Cleavages vollkommen {001}
Fracture keiner
Solubility +++ H2SO4, HF - HCl
Crystal System monoklin, C2/m

Chemism

Chem­ical formula

Ba(Fe2+,Mg)3[(OH,F)2|Al2Si2O10]

Chem­ical com­po­si­tion

Aluminium, Barium, Eisen, Magnesium, Silicium, Fluor, Sauerstoff, Wasserstoff

Unit weight: 586.346898525 u; Number of atoms in the formula: 21.5

Info

Empirical formula:

Ba(Fe0.75Mg0.25)3[((OH)0.75F0.25)2Al2Si2O10]

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

0.26

1.5

6.98

1.0079470

1.5119205

Oxygen

O

31.38

11.5

53.49

15.9994300

183.9934450

Fluorine

F

1.62

0.5

2.33

18.9984033

9.4992016

Magnesium

Mg

3.11

0.75

3.49

24.3050600

18.2287950

Aluminium

Al

9.20

2

9.30

26.9815382

53.9630764

Silicon

Si

9.58

2

9.30

28.0855300

56.1710600

Iron

Fe

21.43

2.25

10.47

55.8452000

125.6517000

Barium

Ba

23.42

1

4.65

137.3277000

137.3277000

Strunz 9th edi­tion incl. updates

9.EC.35

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

Lapis Clas­sifica­tion

VIII/H.12-035

VIII: SILIKATE
H: Schichtsilikate
12: Glimmerartige Schicht-silikate mit Baugruppen [Si4O10] 4- und verwandte Strukturen; Glimmer-Gruppe; Sprödglimmer (Margarit-Reihe)

Clas­sifica­tion by Hölzel

9.EE.150

9: SILICATES
E: Phyllosilicates
E: ~[(OH)2|Al2Si2O10] Margarite-Group

IMA sta­tus

anerkannt

Min­eral sta­tus

anerkanntes Mineral

IMA Classification

IMA Clas­sifica­tion

Mica group  ⇒ Brittle micas

Optical Properties

Color

dunkelgrün

Streak color

grün

Lus­tre

Glasglanz

RI value β

1.680

Ri mean

1.680

2V angle

Biaxial (-) 20°

Crystallography

Crystal Sys­tem

monoklin

Class (H-M)

2/m

Space Group number

12

Space Group

C2/m

Cell param­e­ters a (Å)

5.389

Cell param­e­ters b (Å)

9.337

Cell param­e­ters c (Å)

10.054

Cell param­e­ters a/b or c/a

0.577

Cell param­e­ters c/b

1.077

Cell param­e­ters α

90°

Cell param­e­ters β

100.53

Cell param­e­ters γ

90°

Z

2

Volumne (ų)

497.369

X-Ray Pow­der Diffrac­tion

3.655(10),
2.651(100),
2.447(10),
2.176(40),
1.659(20),
1.551(30),
1.529(20),
1.520(10)

XRD chart Ferrokinoshitalite

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

Crystals 3D

Open larger view

Crystal Structure 3D

Open larger view

Physical Properties

Hard­ness (Mohs)

3

VHN (Hard­ness Vick­ers)

83 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

3.59 (berechnet)

3.915 ( ρ calc. Mineralienatlas )

Cleav­ages

vollkommen {001}

Frac­ture

keiner

Tenac­ity

spröde

Insta­bil­ity

+++ H2SO4, HF - HCl

Preface

Author (Name, Year)

Guggenheim & Frimmel, 1999

References

Guggenheim, S. and Frimmel, H.E. (1999) Ferrokinoshitalite, a new species of brittle mica from the Broken Hill mine, South Africa: structural and mineralogical characterization - Canadian Mineralogist 37, 1445-1452.

American Mineralogist 85 (2000), 1561.

IMA group assignments

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

Bityite

CaLiAl2(AlBeSi2)O10(OH)2

monoklin : 2/m : C2/c

9.EC.35

Anandite

(Ba,K)(Fe2+,Mg)3(Si,Al,Fe)4O10(S,OH)2

monoklin : 2/m : C2/c

9.EC.35

Clintonite

Ca(Mg,Al)3(Al3Si)O10(OH)2

monoklin : 2/m, m : C2/m, ?

9.EC.35

Fluorokinoshitalite

BaMg3Al2Si2O10F2

monoklin : 2/m : C2/m

9.EC.35

Kinoshitalite

(Ba,K)(Mg,Mn,Al)3Si2Al2O10(OH)2

monoklin : 2/m : C2/m

9.EC.35

Oxykinoshitalite

(Ba,K)(Mg,Fe2+,Ti4+)3(Si,Al)4O10O2

monoklin : 2/m : C2/m

9.EC.35

Ferrokinoshitalite

Ba(Fe2+,Mg)3[(OH,F)2|Al2Si2O10]

monoklin : 2/m : C2/m

9.EC.35

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

Anandite

(Ba,K)(Fe2+,Mg)3(Si,Al,Fe)4O10(S,OH)2

monoklin : 2/m : C2/c

VIII/H.12-010

Bityite

CaLiAl2(AlBeSi2)O10(OH)2

monoklin : 2/m : C2/c

VIII/H.12-020

Oxykinoshitalite

(Ba,K)(Mg,Fe2+,Ti4+)3(Si,Al)4O10O2

monoklin : 2/m : C2/m

VIII/H.12-025

Fluorokinoshitalite

BaMg3Al2Si2O10F2

monoklin : 2/m : C2/m

VIII/H.12-028

Kinoshitalite

(Ba,K)(Mg,Mn,Al)3Si2Al2O10(OH)2

monoklin : 2/m : C2/m

VIII/H.12-030

Ferrokinoshitalite

Ba(Fe2+,Mg)3[(OH,F)2|Al2Si2O10]

monoklin : 2/m : C2/m

VIII/H.12-035

Margarite

CaAl2(Al2Si2)O10(OH)2

monoklin : m : Cc

VIII/H.12-040

Chernykhite

BaV2(Si2Al2)O10(OH)2

monoklin : 2/m : C2/c

VIII/H.12-050

Hanjiangite

Ba2Ca(V3+Al)(AlSi3O10)(OH)2F(CO3)2

monoklin : m : Cc

VIII/H.12-055

Clintonite

Ca(Mg,Al)3(Al3Si)O10(OH)2

monoklin : 2/m, m : C2/m, ?

VIII/H.12-060

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

Siderophyllite

KFe22+Al(Al2Si2)O10(F,OH)2

monoklin : 2 : C2/m

9.EE.100

Preiswerkite

NaMg2Al3Si2O10(OH)2

monoklin : 2/m : C2/m

9.EE.120

Kinoshitalite

(Ba,K)(Mg,Mn,Al)3Si2Al2O10(OH)2

monoklin : 2/m : C2/m

9.EE.140

Fluorokinoshitalite

BaMg3Al2Si2O10F2

monoklin : 2/m : C2/m

9.EE.143

Ferrokinoshitalite

Ba(Fe2+,Mg)3[(OH,F)2|Al2Si2O10]

monoklin : 2/m : C2/m

9.EE.150

Oxykinoshitalite

(Ba,K)(Mg,Fe2+,Ti4+)3(Si,Al)4O10O2

monoklin : 2/m : C2/m

9.EE.160

Other languages

Spanish

Ferrokinoshitalita

English

Ferrokinoshitalite

French

Ferrokinoshitalite

German

Ferrokinoshitalith

Russian

Феррокиноситалит

Alternative Name

German

Ferrokinoshitalit

IMA Number

IMA 1999-026

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

German pages

DeWikiPedia - search for: Ferrokinoshitalith
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Mineralogisch-Petrographisches-Institut Hamburg - search for: Ferrokinoshitalith

English pages

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

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German pages

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