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Manganite

Pictures (182 Images total)

Manganite with Calcite
Views (Image: 1575964202): 3428
Manganite with Calcite

Manganite with Calcite, from Manganese deposit, Ilfeld, Nordhausen, Harz, Thuringia, Germany; Dimensions: 61 mm x 54 mm x 32 mm

Copyright: pegmatite
Contribution: pegmatite 2019-12-10
Locality: Ilfeld / Harztor / Nordhausen, Landkreis / Thüringen / Deutschland
Manganit
Views (Image: 1319705041): 5726, Rating: 8.5
Manganit

Größe: 1,7 mm; Fundort: N'Chwaning Mine, Kalahari Manganese Field, Provinz Nordkap, Südafrika

Copyright: Enrico Bonacina
Contribution: Hg 2011-10-27
Locality: N'Chwaning Mines (NChwaning Mines) / Kuruman / Kalahari Manganese Field / Nordkap (Northern Cape), Provinz / Südafrika
Manganit
Views (Image: 1358513928): 8531, Rating: 8.63
Manganit

Fundort Ilfeld, alte Stufe, Kristalle bis 2,2cm

Collection: berthold
Copyright: berthold
Contribution: berthold 2013-01-18
Locality: Ilfeld / Harztor / Nordhausen, Landkreis / Thüringen / Deutschland
Manganit
Views (Image: 1513635417): 4112, Rating: 8.5
Manganit  X
Analysed with X-ray diffraction XRD

Bildbreite 2,0 mm

Collection: husi
Copyright: husi
Contribution: husi 2017-12-18
Locality: Grube Huth / Hamm / Wissen / Altenkirchen (Westerwald), Kreis / Rheinland-Pfalz / Deutschland
Manganit
Views (Image: 1117277888): 10662
Manganit

Handstufe mit schönen schwarzen hochglänzenden Manganit-Kristallen bis 2,2 cm Länge Stufengröße: 13 x 9 x 8 cm, Bildbreite 8cm Fundort: Ilfeld, Harz

Collection: loparit
Copyright: loparit
Contribution: loparit 2005-05-28
Locality: Ilfeld / Harztor / Nordhausen, Landkreis / Thüringen / Deutschland
Manganit
Views (Image: 1471268423): 597
Manganit

Manganit von Krettnich, Saarland. REM-Aufnahme von Dr. Thomas Raber.

Collection: Klaus Schäfer
Copyright: Dr. Thomas Raber
Contribution: Klaus Schäfer 2016-08-15
Locality: Johannschacht / Mangangruben / Krettnich / Wadern / Merzig-Wadern, Landkreis / Saarland / Deutschland

Collectors Summary

Color stahlgrau, eisenschwarz
Streak color rötlichbraun, schwarz
Lustre Halbmetallglanz
Hardness (Mohs) 4
Cleavages vollommen {010}, gut {110} {001}
Fracture unregelmäßig, uneben
Solubility +++ heiße konz. Säuren
Crystal System monoklin, P21/c

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.FD.15

4: Oxide, Hydroxide (Oxide, Hydroxide, V[5,6]-Vanadate, Arsenite, Antimonite, Bismutite, Sulfite, Selenite, Tellurite, Iodate)
F: Hydroxide (ohne V oder U)
D: Hydroxide mit OH, ohne H2O; Ketten aus kantenverknüpften Oktaeder
15:Manganit-Gruppe

Lapis Clas­sifica­tion

IV/F.06-070

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

Clas­sifica­tion by Hölzel

4.FC.100

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

Hey's Chem­ical Index of Min­er­als

07.18.07

07: Oxides and Hydroxides
18: Oxides of Mn

Dana 8th edi­tion

06.01.03.01

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

IMA sta­tus

Erstbeschreibung vor CNMNC-Gründung (1959), als Mineral meist anerkannt

Min­eral sta­tus

anerkanntes Mineral

Optical Properties

Color

stahlgrau, eisenschwarz

Streak color

rötlichbraun, schwarz

Image ⇒ Streak color (picture) (1 Images total)

Manganit
Views (Image: 1586245347): 559
Manganit

Strichfarbe eines Erzbrockens aus Manganit aus der Nähe des Braunsteinhauses bei Ilfeld im Harz

Copyright: Ulrich
Contribution: Ulrich 2020-04-07

Change in color

grau in reflktiertem Licht

Diaphane­ity (Trans­parency)

opak, durchscheinend

Lus­tre

Halbmetallglanz

max. Birefrin­gence

0.28

Birefringence chart\! Manganite title=Birefringence chart Manganite

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

2.25

RI value β

2.25

RI value γ / ε

2.53

Ri mean

2.343

2V angle

Biaxial (+)

Ori­enta­tion

X = a, Y = b, Z ^ c = 0° bis 4°

Dis­per­sion

sehr stark, r> v

Absorp­tion

Z > X = Y

Pleochro­ism

mäßig in reflektiertem Licht

Anisotropism

stark in reflektiertem Licht

Reflec­tiv­ity: (Lambda nm) ↓, ↑, Ø

(470) 14.5, 21.45, 18.0
(546) 14.1, 20.50, 17.3
(589) 13.6, 19.70, 16.7
(650) 13.2, 19.00, 16.1

Reflection chart Manganite

Reflec­tiv­ity Ø

17.01

Optical Data Luminescence

Lumi­nes­cence

keine Fluoreszenz bekannt

Crystallography

Crystal Sys­tem

monoklin

Class (H-M)

2/m

Space Group number

14

Space Group

P21/c

Cell param­e­ters a (Å)

5.3

Cell param­e­ters b (Å)

5.278

Cell param­e­ters c (Å)

5.307

Cell param­e­ters a/b or c/a

1.004

Cell param­e­ters c/b

1.005

Cell param­e­ters α

90°

Cell param­e­ters β

114.36°

Cell param­e­ters γ

90°

Z

4

Volumne (ų)

135.238

Kristall struc­ture

Ältere Quellen geben β = 90° an [1][2]. Neuere Untersuchungen zeigen ~ 114.4° [3][4]

X-Ray Pow­der Diffrac­tion

3.405(100),
2.639(20),
2.524(10),
2.417(20),
2.414(20),
1.782(20),
1.672(20),
1.670(20)

XRD chart Manganite

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)

4

VHN (Hard­ness Vick­ers)

687 (100g)

Density (g/cm³)

4.33 (gemessen) 4.38 (berechnet)

4.319 ( ρ calc. Mineralienatlas )

Cleav­ages

vollommen {010}, gut {110} {001}

Frac­ture

unregelmäßig, uneben

Tenac­ity

spröde

Radioac­tiv­ity

keine

Insta­bil­ity

+++ heiße konz. Säuren

Chem­ical Prop­er­ties and Tests

mit heißer HCl entwickelt sich Cl Gas

Preface

Author (Name, Year)

Haidinger, 1827

References

Handbook of Mineralogy (Anthony et al.), 3 (1997), 341

Other languages

German

Manganit

Spanish

Manganita

English

Manganite

French

Manganite

Russian

Манганит

Simplified Chinese

水锰矿

Japanese

水マンガン鉱

Alternative Name

French

Acerdse

French

Acerdèse

German

Braunmanganerz

German

Braunstein

German

Glanzmanganerz

German

Grau-Braunsteinerz

German

Graumanganerz

English

Gray Oxide of Manganese

Manganaise cristallis

Manganaise cristallisé

Manganse oxyd metallode

Manganèse oxydé metalloïde

German

Newkirkit

Spanish

Newkirkita

Newkirkite

Prismatoidisches Mangan-Erz

German

Sphenomanganit

Spanish

Sphenomanganita

English

Sphenomanganite

CNMNC symbol

Symbol

Mnn

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

German pages

DeWikiPedia - search for: Manganit
Google-Bilder-Suche - search for: Manganit
Mineralienatlas.de (Forum) - search for: Manganit

English pages

Mindat - search for: Manganite
Webmineral - search for:Manganite
Handbook-of-Mineralogy - search for: Manganite
RRUFF - Raman, XRD and other mineral data - search for: Manganite
RRUFF - References and PDF downloads - search for: Manganite
American-Mineralogist-Crystal-Structure-Database - search for: Manganite
Strahlen.org - search for: Manganite

Russian pages

Webmineral.ru - search for: Манганит

Mineral Dealer

German pages

hausen - Mineralgroßhandel - search for: Manganit
Crystal-Treasure.com - search for: Manganit
Bosse - search for: Manganit
Edelsteine Neuburg - Gundolf Fischer - search for: Manganit

Locations with GPS information