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Akhtenskite

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Akhtenskit
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Akhtenskit (SNr: A010371,)

grauschwarzes, derbes Belegstück; BB = 12 mm,

Collection: Lithothek der Münchener Micromounter
Copyright: Hannes Osterhammer
Contribution: Münchener Micromounter 2015-09-12
Locality: Sakyo-ku / Kyoto, Stadt / Kyoto, Präfektur / Kinki, Region / Honshu / Japan

Collectors Summary

Color grauschwarz
Streak color schwarz
Solubility +++ HCl
Crystal System hexagonal, P63/mmc

Chemism

Chem­ical formula

Mn4+O2

Chem­ical com­po­si­tion

Mangan, Sauerstoff

Unit weight: 86.9369099 u; Number of atoms in the formula: 3

Info

Empirical formula:

MnO2

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Oxygen

O

36.81

2

66.67

15.9994300

31.9988600

Manganese

Mn

63.19

1

33.33

54.9380499

54.9380499

Anal­y­sis wt%

? MnO2 : 99.00

Strunz 9th edi­tion incl. updates

4.DB.15

4: Oxide, Hydroxide (Oxide, Hydroxide, V[5,6]-Vanadate, Arsenite, Antimonite, Bismutite, Sulfite, Selenite, Tellurite, Iodate)
D: Metall: Sauerstoff = 1:2 und vergleichbare
B: Mit mittelgroßen [Kationen]: Ketten kantenverknüpfter Oktaeder
15:Ramsdellit-Gruppe

Lapis Clas­sifica­tion

IV/D.10-015

IV: OXIDE
D: Oxide mit Verhältnis Metall : Sauerstoff = 1:2 (MO2 und verwandte Verbindungen)

Clas­sifica­tion by Hölzel

4.DF.300

4: OXIDES
D: Dioxides
F: Ramsdellite-Group

Dana 8th edi­tion

04.04.10.01

04: Oxide Minerals
04: Simple Oxides with a cation charge of 4+ (A++++ O2)

IMA sta­tus

Anerkannt von der CNMNC

Min­eral sta­tus

anerkanntes Mineral

Optical Properties

Color

grauschwarz

Streak color

schwarz

Crystallography

Crystal Sys­tem

hexagonal

Class (H-M)

6/mmm

Space Group number

194

Space Group

P63/mmc

Cell param­e­ters a (Å)

2.85

Cell param­e­ters b (Å)

-

Cell param­e­ters c (Å)

4.48

Cell param­e­ters a/b or c/a

1.572

Cell param­e­ters c/b

-

Cell param­e­ters α

90°

Cell param­e­ters β

90°

Cell param­e­ters γ

120°

Z

1

Volumne (ų)

31.514

X-Ray Pow­der Diffrac­tion

2.42(60),
2.13(30),
1.64(100),
1.40(40),
1.212(10),
1.065(10),
0.847(10)

XRD chart Akhtenskite

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

Crystals 3D

Open larger view

Crystal Structure 3D

Open larger view

Physical Properties

Density (g/cm³)

4.58 (berechnet)

4.581 ( ρ calc. Mineralienatlas )

Insta­bil­ity

+++ HCl

Preface

Author (Name, Year)

Chukhrov & Gorshkov & Drits, 1987

References

International Geology Review 31 (1989), 1068

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

Nsutite

(gamma-MnO2)Mnx2+Mn1-x4+O2-2x(OH)2x

4.DB.15

Akhtenskite

Mn4+O2

hexagonal : 6/mmm : P63/mmc

4.DB.15

Ramsdellite

MnO2

orthorhombisch : mmm : Pbnm

4.DB.15

Paramontroseite

VO2

orthorhombisch : mmm : Pbnm

4.DB.15

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

Ramsdellite

MnO2

orthorhombisch : mmm : Pbnm

IV/D.10-010

Akhtenskite

Mn4+O2

hexagonal : 6/mmm : P63/mmc

IV/D.10-015

Nsutite

(gamma-MnO2)Mnx2+Mn1-x4+O2-2x(OH)2x

IV/D.10-020

'Vernadite'

(Mn,Fe,Ca,Na)(O,OH)2·nH2O

tetragonal : 4/m : I4/m

IV/D.10-030

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

Akhtenskite

Mn4+O2

hexagonal : 6/mmm : P63/mmc

4.DF.300

Ranciéite

(Ca,Mn2+)0.2(Mn4+,Mn3+)O2·0.6H2O

trigonal : 3 : P3

4.DF.310

Birnessite

(Na,Ca,K)0.6(Mn4+,Mn3+)2O4·1.5H2O

monoklin : 2/m : C2/m

4.DF.320

Takanelite

(Mn2+,Ca)Mn4+4O9·H2O

4.DF.330

Asbolane

(Co,Ni)1-y(Mn4+O2)2-x(OH)2-2y+2x ·n H2O

4.DF.370

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

Akhtenskite

Mn4+O2

hexagonal : 6/mmm : P63/mmc

04.04.10.01

Paramontroseite

VO2

orthorhombisch : mmm : Pbnm

04.04.11.01

Cerianite-(Ce)

CeO2

kubisch : m3m : Fm3m

04.04.12.01

Tazheranite

(Zr,Ti,Ca)O2

kubisch : m3m, 43m : Fm3m, P43m

04.04.13.01

Srilankite

(Ti,Zr)O2

orthorhombisch : mmm : Pbcn

04.04.13.02

Baddeleyite

ZrO2

monoklin : 2/m : P21/c

04.04.14.01

Tugarinovite

MoO2

monoklin : 2/m : P21/c

04.04.15.01

Cervantite

Sb3+Sb5+O4

orthorhombisch : mm2 : Pna21

04.04.16.01

Clinocervantite

Sb3+Sb5+O4

monoklin : 2/m : C2/c

04.04.16.02

Huanzalaite

MgWO4

monoklin : 2/m : P2/c

04.04.16.04

Lenoblite

V4+2O4·2H2O

orthorhombisch : 222 : P212121

04.04.17.01

CNMNC (IMA)-Number

IMA 1982-072

CNMNC symbol

Symbol

Akh

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

German pages

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