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Amakinite

Collectors Summary

Color blassgrün
Hardness (Mohs) 3.50 - 4.00
Solubility +++ HCl
Crystal System trigonal, P3m1

Chemism

Chemical formula

Fe(OH)2

Chemical composition

Eisen, Sauerstoff, Wasserstoff

Unit weight: 89.859954 u; Number of atoms in the formula: 5

Info

Empirical formula:

Fe(OH)2

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

2.24

2

40.00

1.0079470

2.0158940

Oxygen

O

35.61

2

40.00

15.9994300

31.9988600

Iron

Fe

62.15

1

20.00

55.8452000

55.8452000

Analysis wt%

Fe2O3 : 31.58, FeO : 30.40, MgO : 10.10, MnO : 3.63, SiO2 : 0.43, H2O : 23.03 (Ref: Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva, 1904-1974 62)

Strunz 9th edition incl. updates

4.FE.05

4: Oxide, Hydroxide (Oxide, Hydroxide, V[5,6]-Vanadate, Arsenite, Antimonite, Bismutite, Sulfite, Selenite, Tellurite, Iodate)
F: Hydroxide (ohne V oder U)
E: Hydroxide mit OH, ohne H2O; Lagen kantenverknüpfter Oktaeder
05:Brucit-Gruppe

Lapis Classification

IV/F.03-020

IV: OXIDE
F: Hydroxide und oxidische Hydrate (wasserhaltige Oxide mit Schichtstruktur)
3: Brucit-Reihe

Classification by Hölzel

4.FA.180

4: OXIDES
F: Hydroxides and Hydrates (without V and U)
A: Dihydroxides Me(OH)2
1: Brucite-Group

Dana 8th edition

06.02.01.02

06: Hydroxides and Oxides Containing Hydroxyl
02: Hydroxides and Oxides Containing Hydroxyl where X++ (OH)2
01: Brucite group (Rhombohedral: P-3m1)

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

Optical Properties

Color

blassgrün

max. Birefringence

0.015

Birefringence chart\! Amakinite title=Birefringence chart Amakinite

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

1.707

RI value γ / ε

1.722

Ri mean

1.712

2V angle

Uniaxial (+)

Crystallography

Crystal System

trigonal

Class (H-M)

3m

Space Group number

164

Space Group

P3m1

Cell parameters a (Å)

3.263

Cell parameters b (Å)

-

Cell parameters c (Å)

4.604

Cell parameters a/b or c/a

1.411

Cell parameters c/b

-

Z

1

Volumne (ų)

42.452

X-Ray Powder Diffraction

5.49(70),
2.80(80),
2.30(100),
1.728(90),
1.551(70),
1.530(80),
1.386(70),
1.265(70)

XRD chart Amakinite

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)

3.50 - 4.00

VHN (Hardness Vickers)

160 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

2.98 (gemessen) 3.515 (berechnet)

3.515 ( ρ calc. Mineralienatlas )

Instability

+++ HCl

Preface

Author (Name, Year)

Kozlov & Levshov, 1962

References

Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva 91 (1962), 72

CNMNC Newsletter No. 50; Mineralogical Magazine, 31 [Formel]

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

Amakinite

Fe(OH)2

trigonal : 3m : P3m1

4.FE.05

Brucite

Mg(OH)2

trigonal : 3m : P3m1

4.FE.05

Fougèrite

Fe2+6Fe3+2(OH)16CO3·3H2O

trigonal : 3m : R3m

4.FE.05

Portlandite

Ca(OH)2

trigonal : 3m : P3m1

4.FE.05

Pyrochroite

Mn(OH)2

trigonal : 3m : P3m1

4.FE.05

Theophrastite

Ni(OH)2

trigonal : 3m : P3m1

4.FE.05

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

Brucite

Mg(OH)2

trigonal : 3m : P3m1

IV/F.03-010

Amakinite

Fe(OH)2

trigonal : 3m : P3m1

IV/F.03-020

Pyrochroite

Mn(OH)2

trigonal : 3m : P3m1

IV/F.03-030

Theophrastite

Ni(OH)2

trigonal : 3m : P3m1

IV/F.03-040

Paraotwayite

Ni(OH)2-x(SO4,CO3)0.5x

IV/F.03-050

Jamborite

Ni2+1-xCo3+x(OH)2-x(SO4)x·nH2O

trigonal : 3m : R3m

IV/F.03-055

Sweetite

Zn(OH)2

IV/F.03-060

Ashoverite

Zn(OH)2

tetragonal : 4/mmm : I41/amd

IV/F.03-070

Wülfingite

Zn(OH)2

orthorhombisch : 222 : P212121

IV/F.03-080

Spertiniite

Cu(OH)2

orthorhombisch : mm2 : Cmc21

IV/F.03-090

Portlandite

Ca(OH)2

trigonal : 3m : P3m1

IV/F.03-100

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

Brucite

Mg(OH)2

trigonal : 3m : P3m1

4.FA.100

Pyrochroite

Mn(OH)2

trigonal : 3m : P3m1

4.FA.120

Theophrastite

Ni(OH)2

trigonal : 3m : P3m1

4.FA.150

Portlandite

Ca(OH)2

trigonal : 3m : P3m1

4.FA.170

Amakinite

Fe(OH)2

trigonal : 3m : P3m1

4.FA.180

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

Brucite

Mg(OH)2

trigonal : 3m : P3m1

06.02.01.01

Amakinite

Fe(OH)2

trigonal : 3m : P3m1

06.02.01.02

Pyrochroite

Mn(OH)2

trigonal : 3m : P3m1

06.02.01.03

Portlandite

Ca(OH)2

trigonal : 3m : P3m1

06.02.01.04

Theophrastite

Ni(OH)2

trigonal : 3m : P3m1

06.02.01.05

Behoite

Be(OH)2

orthorhombisch : 222 : P212121

06.02.02.01

Clinobehoite

Be(OH)2

monoklin : 2 : P21

06.02.03.01

Spertiniite

Cu(OH)2

orthorhombisch : mm2 : Cmc21

06.02.04.01

Calumetite

CaCu4(OH)8Cl2·3.5H2O

06.02.05.01

Anthonyite

Cu(OH,Cl)2·3H2O

monoklin : 2/m

06.02.06.01

Duttonite

V4+O(OH)2

monoklin : 2/m : I2/c

06.02.07.01

Tivanite

V3+TiO3(OH)

monoklin : 2/m : P21/c

06.02.08.01

Sweetite

Zn(OH)2

06.02.09.01

Other languages

German

Amakinit

Spanish

Amakinita

French

Amakinite

English

Amakinite

Russian

Амакинит

Simplified Chinese

羟铁矿

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

German pages

DeWikiPedia - search for: Amakinit
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English pages

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Russian pages

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