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Anandite

Collectors Summary

Color schwarz
Streak color grauweiß
Lustre Glasglanz
Hardness (Mohs) 3.5
Cleavages vollkommen parallel zu {001}
Crystal System monoklin, C2/c

Chemism

Chem­ical formula

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

Chem­ical com­po­si­tion

Aluminium, Barium, Eisen, Magnesium, Silicium, Kalium, Sauerstoff, Schwefel, Wasserstoff

Unit weight: 595.36828384 u; Number of atoms in the formula: 20.5

Info

Empirical formula:

(Ba0.75K0.25)(Fe0.75Mg0.25)3(Si0.6Al0.3Fe0.1)4O10(S0.75(OH)0.25)2

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

0.08

0.5

2.44

1.0079470

0.5039735

Oxygen

O

28.22

10.5

51.22

15.9994300

167.9940150

Magnesium

Mg

3.06

0.75

3.66

24.3050600

18.2287950

Aluminium

Al

5.44

1.2

5.85

26.9815382

32.3778458

Silicon

Si

11.32

2.4

11.71

28.0855300

67.4052720

Sulfur

S

8.08

1.5

7.32

32.0655000

48.0982500

Potassium

K

1.64

0.25

1.22

39.0983100

9.7745775

Iron

Fe

24.86

2.65

12.93

55.8452000

147.9897800

Barium

Ba

17.30

0.75

3.66

137.3277000

102.9957750

Anal­y­sis wt%

SiO2 : 25.22, Al2O3 : 5.86, Fe2O3 : 6.47, FeO : 33.42, MnO : 0.70, MgO : 3.18, BaO : 19.60, K2O : 0.95, H2O : 2.13, S : 2.52

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.12-010

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.250

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

Hey's Chem­ical Index of Min­er­als

16.12.15

16: Silicates Containing Aluminum and other Metals
12: Aluminosilicates of Sr, Ba and Zn

Dana 8th edi­tion

71.02.02c.04

71: Phyllosilicate Minerals
02: Phyllosilicates Phyllosilicate Sheets of Six-Membered Rings with 2:1 Layers
02c: Mica Group (Margarite subgroup)

IMA sta­tus

Anerkannt von der CNMNC

Min­eral sta­tus

anerkanntes Mineral

IMA Classification

IMA Clas­sifica­tion

Mica group  ⇒ Brittle micas

Optical Properties

Color

schwarz

Streak color

grauweiß

Diaphane­ity (Trans­parency)

opak

Lus­tre

Glasglanz

max. Birefrin­gence

0.025 >

Birefringence chart\! Anandite title=Birefringence chart Anandite

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

1.855

RI value γ / ε

1.880 >

2V angle

Biaxial (+)

Pleochro­ism

sichtbar

Crystallography

Crystal Sys­tem

monoklin

Class (H-M)

2/m

Space Group number

15

Space Group

C2/c

Cell param­e­ters a (Å)

5.412

Cell param­e­ters b (Å)

9.434

Cell param­e­ters c (Å)

19.953

Cell param­e­ters a/b or c/a

0.574

Cell param­e­ters c/b

2.115

Cell param­e­ters α

90°

Cell param­e­ters β

94.87

Cell param­e­ters γ

90°

Z

4

Volumne (ų)

1015.059

X-Ray Pow­der Diffrac­tion

9.92(60),
4.99(90),
3.320(100),
2.716(50),
2.681(40),
2.490(80),
1.991(30),
1.660(30)

XRD chart Anandite

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)

3.5

VHN (Hard­ness Vick­ers)

130 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

3.94 (gemessen) 3.91 (berechnet)

3.896 ( ρ calc. Mineralienatlas )

Cleav­ages

vollkommen parallel zu {001}

(Co-)Type locality

(Co-)Type locality

Sri Lanka/Nordwestprovinz/Wilagedera

Preface

Author (Name, Year)

Pattiaratchi & Saari & Sahama, 1967

References

Mineralogical Magazine 36 (1967), 1

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]

Margarite

CaAl2(Al2Si2)O10(OH)2

monoklin : m : Cc

9.EE.200

'Ephesite'

NaLiAl2(Al2Si2)O10(OH)2

monoklin : m : Cc

9.EE.220

Bityite

CaLiAl2(AlBeSi2)O10(OH)2

monoklin : 2/m : C2/c

9.EE.230

Anandite

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

monoklin : 2/m : C2/c

9.EE.250

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

Talc

Mg3Si4O10(OH)2

monoklin : 2/m : C2/c

71.02.01.03

Willemseite

(Ni,Mg)3Si4O10(OH)2

monoklin : m : Cc

71.02.01.04

'Glauconite'

(K,Na)(Fe3+,Al,Mg)2(Si,Al)4O10(OH)2

monoklin : 2/m : C2/m

71.02.02a.05

Tobelite

(NH4,K)Al2(Si3Al)O10(OH)2

monoklin : 2/m : C2/m

71.02.02a.07

'Tetraferriannite'

KFe2+3(Si3Fe3+)O10(OH)2

monoklin : 2/m : C2/m

71.02.02b.04

Sokolovaite

CsLi2AlSi4O10F2

71.02.02b.08b

Zinkosite

ZnSO4

orthorhombisch : mmm : Pnma

71.02.02b.10

'Zinnwaldite'

KLiFe2+Al(AlSi3)O10(F,OH)2

monoklin : 2 : C2

71.02.02b.10

'Ephesite'

NaLiAl2(Al2Si2)O10(OH)2

monoklin : m : Cc

71.02.02b.16

Clintonite

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

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

71.02.02c.02

Anandite

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

monoklin : 2/m : C2/c

71.02.02c.04

Oxykinoshitalite

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

monoklin : 2/m : C2/m

71.02.02c.08

Hydrobiotite

K(Mg,Fe2+)6(Si,Al)8O20(OH)4·nH2O

monoklin : 2/m : C2/m

71.02.02d.01

Cuprorivaite

CaCuSi4O10

tetragonal : 4/mmm : P4/ncc

71.02.03.01

Gillespite

BaFe2+Si4O10

tetragonal : 4/mmm : P4/ncc

71.02.03.02

Effenbergerite

BaCu[Si4O10]

tetragonal : 4/mmm : P4/ncc

71.02.03.03

Wesselsite

Sr0.9Ba0.1CuSi4O10

tetragonal : 4/mmm : P4/ncc

71.02.03.04

Ferrisurite

(Pb,Ca)2-3(Fe3+,Al)2[(OH,F)2.5-3|(CO3)1.5-2|Si4O10]·0.5 H2O

monoklin : 2, 2/m : P21, P21/m

71.02.04.01

Surite

Pb2Ca(Al,Mg)2(Si,Al)4O10(OH)2(CO3,OH)3·0.5 H2O

monoklin : 2 : P21

71.02.04.02

Niksergievite

(Ba, Ca)2Al3[(OH)6|CO3|(Si, Al)4O10]·0.2 H2O

monoklin : 2/m, 2, m : C2/m, C2, Cm

71.02.04.03

Macaulayite

(Fe3+,Al)24Si4O43(OH)2

71.02.05.01

Related minerals "Hey's 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

16.12.15

Other languages

German

Anandit

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Anandita

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Anandite

English

Anandite

Russian

Анандит

Japanese

アナンド鉱

Japanese

アナンド鉱-2O

Alternative Name

German

Adandit

flasche Schreibweise für Anandit

English

Anandite-2M1

Anandite-2O

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