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Feitknechtite

Pictures (2 Images total)

Feitknechtit
Views (File:
1555077701
): 658
Feitknechtit
(grau-braun) Moss Mine, Nordmark, Filipstad, Värmland, Schweden; 5,5x4cm.
Copyright: Doc Diether; Contribution: Doc Diether
Collection: Doc Diether
Location: Schweden/Örebro, Provinz/Ljusnarsberg/Mossgruvan (Moss Mine)
Mineral: Feitknechtite
Image: 1555077701
License: Usage for Mineralienatlas project only
Feitknechtit

(grau-braun) Moss Mine, Nordmark, Filipstad, Värmland, Schweden; 5,5x4cm.
Collection: Doc Diether
Copyright: Doc Diether
Contribution: Doc Diether 2019-04-12
Locality: Mossgruvan (Moss Mine) / Ljusnarsberg / Örebro, Provinz / Schweden
Feitknechtit als grauschwarze Kruste
Views (File:
1565942823
): 383
Feitknechtit als grauschwarze Kruste
Moss Mine, Finmossen, Nordmark, Filipstad, Värmland, Schweden. Bildbreite 1,1 mm
Copyright: Ulrich Baumgärtl; Contribution: Ulrich Baumgärtl
Collection: Ulrich Baumgärtl
Location: Schweden/Värmland, Provinz/Filipstad, Gemeinde/Nordmark, Distrikt/Finnmossen Erzfeld
Mineral: Feitknechtite
Image: 1565942823
License: Usage for Mineralienatlas project only
Feitknechtit als grauschwarze Kruste

Moss Mine, Finmossen, Nordmark, Filipstad, Värmland, Schweden. Bildbreite 1,1 mm
Collection: Ulrich Baumgärtl
Copyright: Ulrich Baumgärtl
Contribution: Ulrich Baumgärtl 2019-08-16
Locality: Finnmossen Erzfeld / Nordmark, Distrikt / Filipstad, Gemeinde / Värmland, Provinz / Schweden

Collectors Summary

Color bräunlichschwarz, schwarz
Streak color braun
Solubility +++ HCl
Crystal System trigonal, P3m1

Chemism

Chemical formula

Mn3+O(OH)

Chemical composition

Mangan, Sauerstoff, Wasserstoff

Unit weight: 87.9448569 u; Number of atoms in the formula: 4

Info

Empirical formula:

MnO(OH)

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Hydrogen

H

1.15

1

25.00

1.0079470

1.0079470
Oxygen

O

36.39

2

50.00

15.9994300

31.9988600
Manganese

Mn

62.47

1

25.00

54.9380499

54.9380499

Analysis wt%

Mn2O3 : 89.76, H2O : 10.24 (Ref: berechnet)

Strunz 9th edition incl. updates

4.FE.25

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
25:Lithiophorit-Gruppe

Lapis Classification

IV/F.06-090

IV: OXIDE
F: Hydroxide und oxidische Hydrate (wasserhaltige Oxide mit Schichtstruktur)

Classification by Hölzel

4.FC.400

4: OXIDES
F: Hydroxides and Hydrates (without V and U)
C: Oxihydroxides
4: MeO(OH) Feitknechtite-Group

Dana 8th edition

06.01.04.03

06: Hydroxides and Oxides Containing Hydroxyl
01: Hydroxides and Oxides Containing Hydroxyl where X+++O OH
04: Heterogenite Group

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

Optical Properties

Color

bräunlichschwarz, schwarz

Streak color

braun

Diaphaneity (Transparency)

durchscheinend bis teilweise opak

Crystallography

Crystal System

trigonal

Class (H-M)

3m

Space Group number

164

Space Group

P3m1

Cell parameters a (Å)

3.32

Cell parameters b (Å)

-

Cell parameters c (Å)

4.71

Cell parameters a/b or c/a

1.419

Cell parameters c/b

-

Z

1

Volume (ų)

44.96

Crystal structure

Jeffrey E. Post; Peter J. Heaney; Eugene S. Ilton; Evert J. Elzinga: The crystal structure of feitknechtite (β-MnOOH) and a new MnOOH polymorph. American Mineralogist Vol.108, Nr. 11 (2023) S. 2131-2141. doi:https://doi.org/10.2138/am-2022-8729

X-Ray Powder Diffraction

4.62(100),
2.64(50),
2.36(20),
1.96(10)
XRD chart Feitknechtite

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

Physical Properties

Density (g/cm³)

3.25 (berechnet)

3.248 ( ρ calc. Mineralienatlas )

Instability

+++ HCl

(Co-)Type locality

(Co-)Type locality

USA/New Jersey/Sussex Co./Franklin Mining District/Franklin/Franklin Mine

USA/New Jersey/Sussex Co./Franklin Mining District/Franklin

Preface

Author (Name, Year)

Bricker, 1965

References

Handbook of Mineralogy (Anthony et al.), 3 (1997), 181

American Mineralogist 50 (1965), 1296

Other languages

German

Feitknechtit

Spanish

Feitknechtita

English

Feitknechtite

French

Feitknechtite

Russian

Файткнехтит

Traditional Chinese

六方水錳礦

Simplified Chinese

六方水锰矿

Japanese

ﾌｧｲﾄｸﾈﾄﾋﾄ鉱

CNMNC symbol

Symbol

Fkn

Locations with GPS information

IDs

GUSID (Global unique identifier short form) 6u9o0FAXd0GzgGJyD1fzBQ
GUID (Global unique identifier) D068EFEA-1750-4177-B380-62720F57F305
Database ID 1109