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Manjiroite

Pictures (3 Images total)

Manjiroit
Views (Image: 1321799287): 577
Manjiroit

Bildbreite: 5,1 mm, Fundort: Tombstone, Tombstone District, Cochise Co., Arizona, USA

Copyright: Enrico Bonacina
Contribution: Hg 2011-11-20
Manjiroit
Views (Image: 1264103093): 686
Manjiroit

Größe: 60x50 mm; Fundort: N'Chwaning Mine, Kalahari Manganese Field, Northern Cape Province, Südafrika

Copyright: Paul Bongaerts
Contribution: slugslayer 2010-01-21
Manjiroit
Views (Image: 1463660706): 210
Manjiroit (SNr: A000139)

von der Prompter Mine bei Tombstone im Cochise Co. von Arizona, USA; faserige schwärzliche Kristalle; BB= 6mm

Collection: Lithothek der Münchener Micromounter
Copyright: Manfred Früchtl
Contribution: Münchener Micromounter 2016-05-19

Collectors Summary

Color bräunlich grau, grau braun, dunkelbraun grau
Streak color bräunlichschwarz
Hardness (Mohs) 4
Solubility +++ HCl
Crystal System tetragonal, I4/m

Chemism

Chemical formula

Na(Mn4+7Mn3+)O16

Chemical composition

Mangan, Natrium, Sauerstoff

Unit weight: 718.4850494 u; Number of atoms in the formula: 25

Info

Empirical formula:

Na(Mn7Mn)O16

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Oxygen

O

35.63

16

64.00

15.9994300

255.9908800

Sodium

Na

3.20

1

4.00

22.9897702

22.9897702

Manganese

Mn

61.17

8

32.00

54.9380499

439.5043992

Analysis wt%

MnO2 : 85.79, MnO : 3.18, Fe2O3 : 0.40, Al2O3 : 0.62, Na2O : 2.99, K2O : 1.39, H2O : 4.60 (Ref: American Mineralogist 68)

Strunz 9th edition incl. updates

4.DK.05a

4: Oxide, Hydroxide (Oxide, Hydroxide, V[5,6]-Vanadate, Arsenite, Antimonite, Bismutite, Sulfite, Selenite, Tellurite, Iodate)
D: Metall: Sauerstoff = 1:2 und vergleichbare
K: Mit großen (± mittelgroßen) [Kationen]; Tunnelstrukturen
05a:Coronadit-Gruppe

Lapis Classification

IV/D.08-010

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

Classification by Hölzel

4.DE.130

4: OXIDES
D: Dioxides
E: Pyrolusite-Group

Dana 8th edition

07.09.01.03

07: Multiple Oxides
09: Multiple Oxides
01: Cryptomelane Group (Hard black, fine-grained)

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

Hollandite supergroup  ⇒ Coronadite group

Optical Properties

Color

bräunlich grau, grau braun, dunkelbraun grau

Streak color

bräunlichschwarz

Diaphaneity (Transparency)

opak

Crystallography

Crystal System

tetragonal

Class (H-M)

4/m

Space Group number

87

Space Group

I4/m

Cell parameters a (Å)

9.916

Cell parameters b (Å)

-

Cell parameters c (Å)

2.864

Cell parameters a/b or c/a

0.289

Cell parameters c/b

-

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

90°

Z

1

Volumne (ų)

281.609

X-Ray Powder Diffraction

7.017(100),
4.941(80),
3.136(90),
2.406(100),
2.160(70),
1.839(50),
1.548(50)

XRD chart Manjiroite

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

Crystals 3D

Open larger view

Physical Properties

Hardness (Mohs)

4

VHN (Hardness Vickers)

181

Density (g/cm³)

4.29

4.236 ( ρ calc. Mineralienatlas )

Instability

+++ HCl

(Co-)Type locality

(Co-)Type locality

Japan/Honshu/Tohoku, Region/Iwate, Präfektur/Kohare Mine

Preface

Author (Name, Year)

Nambu & Tanida, 1967

References

Journal of the Japanese Association of Mineralogists, Petrologists and Economic Geologists 58 (1967), 39

European Journal of Mineralogy Volume 25 Number 1 (2013), p. 85 - 90

IMA group assignments

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

Coronadite

Pb(Mn4+6Mn3+2)O16

monoklin : 2/m : I2/m

4.DK.05a

Cryptomelane

K(Mn4+6Mn3+2)O16

tetragonal : 4/m : I4/m

4.DK.05a

'Cryptomelane-1Q'

K(Mn4+6Mn3+2)O16

4.DK.05a

Ferrihollandite

Ba(Mn4+6Fe3+2)O16

monoklin : 2/m : I2/m

4.DK.05a

Hollandite

Ba(Mn4+6Mn3+2)O16

monoklin : 2/m : I2/m

4.DK.05a

Manjiroite

Na(Mn4+7Mn3+)O16

tetragonal : 4/m : I4/m

4.DK.05a

Strontiomelane

Sr(Mn4+6Mn3+2)O16

monoklin : 2/m : P21/c

4.DK.05a

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

Manjiroite

Na(Mn4+7Mn3+)O16

tetragonal : 4/m : I4/m

IV/D.08-010

Cryptomelane

K(Mn4+6Mn3+2)O16

tetragonal : 4/m : I4/m

IV/D.08-020

Strontiomelane

Sr(Mn4+6Mn3+2)O16

monoklin : 2/m : P21/c

IV/D.08-025

Priderite

K(Ti4+7Fe3+)O16

tetragonal : 4/m : I4/m

IV/D.08-030

Henrymeyerite

Ba(Ti4+7Fe2+)O16

tetragonal : 4/m : I4/m

IV/D.08-033

'Ankangite' (Var.v. Mannardite)

Ba(Ti,V3+,Cr3+)8O16

tetragonal : 4, 4, 4/m : I4, I4, I4/m

IV/D.08-035

Mannardite

Ba(Ti4+6V3+2)O16

tetragonal : 4/m : I41/a

IV/D.08-040

Redledgeite

Ba(Ti4+6Cr3+2)O16

tetragonal : 4/m : I4/m

IV/D.08-050

Ferrihollandite

Ba(Mn4+6Fe3+2)O16

monoklin : 2/m : I2/m

IV/D.08-060

Coronadite

Pb(Mn4+6Mn3+2)O16

monoklin : 2/m : I2/m

IV/D.08-070

Cesàrolite

PbH2Mn34+O8

IV/D.08-080

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

Pyrolusite

MnO2

tetragonal : 4/mmm : P42/mnm

4.DE.100

'Vernadite'

(Mn,Fe,Ca,Na)(O,OH)2·nH2O

tetragonal : 4/m : I4/m

4.DE.110

Manjiroite

Na(Mn4+7Mn3+)O16

tetragonal : 4/m : I4/m

4.DE.130

Cryptomelane

K(Mn4+6Mn3+2)O16

tetragonal : 4/m : I4/m

4.DE.140

Coronadite

Pb(Mn4+6Mn3+2)O16

monoklin : 2/m : I2/m

4.DE.150

Henrymeyerite

Ba(Ti4+7Fe2+)O16

tetragonal : 4/m : I4/m

4.DE.180

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

Hollandite

Ba(Mn4+6Mn3+2)O16

monoklin : 2/m : I2/m

07.09.01.01

Manjiroite

Na(Mn4+7Mn3+)O16

tetragonal : 4/m : I4/m

07.09.01.03

Coronadite

Pb(Mn4+6Mn3+2)O16

monoklin : 2/m : I2/m

07.09.01.04

Strontiomelane

Sr(Mn4+6Mn3+2)O16

monoklin : 2/m : P21/c

07.09.01.05

Henrymeyerite

Ba(Ti4+7Fe2+)O16

tetragonal : 4/m : I4/m

07.09.01.06

Romanèchite

(Ba,H2O)2(Mn4+,Mn3+)5O10

monoklin : 2/m : C2/m

07.09.02.01

Freudenbergite

Na(Ti4+,Fe3+)O8

monoklin : 2/m : C2/m

07.09.03.01

Priderite

K(Ti4+7Fe3+)O16

tetragonal : 4/m : I4/m

07.09.04.01

'Ankangite' (Var.v. Mannardite)

Ba(Ti,V3+,Cr3+)8O16

tetragonal : 4, 4, 4/m : I4, I4, I4/m

07.09.04.02

Mannardite

Ba(Ti4+6V3+2)O16

tetragonal : 4/m : I41/a

07.09.05.01

Redledgeite

Ba(Ti4+6Cr3+2)O16

tetragonal : 4/m : I4/m

07.09.05.02

Other languages

German

Manjiroit

English

Manjiroite

French

Manjiroite

Spanish

Manjiroíta

Russian

Манжироит

Alternative Name

Japanisch

万次郎鉱

IMA Number

IMA 1966-009

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

German pages

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