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Vernadite

Pictures (4 Images total)

Vernadit
Views (Image: 1462216999): 949
Vernadit (SNr: B002191)

Nadelige schwarze Kristalle mit Siderit, BB = 6 mm, Fundort: Plaka Revier, Laurion, Attika, Griechenland.

Collection: Lithothek der Münchener Micromounter
Copyright: Hannes Osterhammer
Contribution: Münchener Micromounter 2016-05-02
Locality: Plaka, Revier / Lavrion (Laurion), Bergbaudistrikt / Attika (Attikí, Attica) / Griechenland
Vernadit
Views (Image: 1207465877): 1973
Vernadit (SNr: A006995)

FO: Kamariza, Laurion, Attika, Griechenland; feine schwarze Nadeln, daneben sattelfrörmiger dunkelbrauner Siderit; BB: 1,0 mm

Collection: Lithothek der Münchener Micromounter
Copyright: Hannes Osterhammer
Contribution: Münchener Micromounter 2008-04-06
Locality: Kamariza / Lavrion (Laurion), Bergbaudistrikt / Attika (Attikí, Attica) / Griechenland
Vernadit-XX
Views (Image: 1108981937): 1930
Vernadit-XX

Bildbreite: 1,7mm; Fundort: Kamareza Mines, Lavrion District, Griechenland

Copyright: Dominik Schläfli
Contribution: Mineralienatlas 2005-02-21
Locality: Lavrion (Laurion), Bergbaudistrikt / Attika (Attikí, Attica) / Griechenland
nadelig-büscheliger schwarzer Vernadit auf Siderit
Views (Image: 1505552760): 658
nadelig-büscheliger schwarzer Vernadit auf Siderit (SNr: A017383)

vom Revier km 3 bei Kamariza, Laurion, Attika, Griechenland; BB = 6,2 mm

Collection: Lithothek der Münchener Micromounter
Copyright: Hannes Osterhammer
Contribution: Münchener Micromounter 2017-09-16
Locality: Km 3 / Km 3, Revier / Lavrion (Laurion), Bergbaudistrikt / Attika (Attikí, Attica) / Griechenland

Collectors Summary

Color schwarz, schokoladenbraun
Streak color schokoladenbraun
Solubility +++ HCl
Crystal System tetragonal, I4/m

Chemism

Chem­ical formula

(Mn,Fe,Ca,Na)(O,OH)2·nH2O

Empir­ical formula (anal­y­sis)

Mn4+0.6Fe3+0.2Ca0.1Na0.1O1.5(OH)0.5·1.4(H2O)

Chem­ical com­po­si­tion

Calcium, Eisen, Mangan, Natrium, Sauerstoff, Wasserstoff

Unit weight: 108.16297406 u; Number of atoms in the formula: 7.7

Info

Empirical formula:

Mn0.6Fe0.2Ca0.1Na0.1O1.5(OH)0.5·1.4(H2O)

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

3.08

3.3

42.86

1.0079470

3.3262251

Oxygen

O

50.29

3.4

44.16

15.9994300

54.3980620

Sodium

Na

2.13

0.1

1.30

22.9897702

2.2989770

Calcium

Ca

3.71

0.1

1.30

40.0784000

4.0078400

Manganese

Mn

30.48

0.6

7.79

54.9380499

32.9628299

Iron

Fe

10.33

0.2

2.60

55.8452000

11.1690400

Anal­y­sis wt%

MnO2 : 70.89, Fe2O3 : 1.20, MnO : 1.79, MgO : 0.77, CaO : 6.14, BaO : 0.64, H2O : 18.18, SiO2 : 0.50

Strunz 9th edi­tion incl. updates

4.FE.40

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
40:Feroxyhyt-Gruppe

Lapis Clas­sifica­tion

IV/D.10-030

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

Clas­sifica­tion by Hölzel

4.DE.110

4: OXIDES
D: Dioxides
E: Pyrolusite-Group

IMA sta­tus

nicht anerkannt

Min­eral sta­tus

Mineralstatus fragwürdig

Optical Properties

Color

schwarz, schokoladenbraun

Streak color

schokoladenbraun

Diaphane­ity (Trans­parency)

opak

Crystallography

Crystal Sys­tem

tetragonal

Class (H-M)

4/m

Space Group number

87

Space Group

I4/m

Cell param­e­ters a (Å)

9.866

Cell param­e­ters b (Å)

-

Cell param­e­ters c (Å)

2.844

Cell param­e­ters a/b or c/a

0.288

Cell param­e­ters c/b

-

Cell param­e­ters α

90°

Cell param­e­ters β

90°

Cell param­e­ters γ

90°

Z

4

Volumne (ų)

276.829

X-Ray Pow­der Diffrac­tion

6.81(30),
3.11(60),
2.39(100),
2.15(60),
1.827(40),
1.649(30),
1.537(40),
1.422(40)

XRD chart Vernadite

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

Crystals 3D

Open larger view

Physical Properties

Density (g/cm³)

3

2.595 ( ρ calc. Mineralienatlas )

Insta­bil­ity

+++ HCl

Preface

Author (Name, Year)

Betekhtin, 1944

References

Handbook of Mineralogy (Anthony et al.), 3 (1997), 595

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

'Vernadite'

(Mn,Fe,Ca,Na)(O,OH)2·nH2O

tetragonal : 4/m : I4/m

4.FE.40

Feroxyhyte

Fe3+O(OH)

trigonal : 3m : P3m1

4.FE.40

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]

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+7Mn3+)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

Alternative Name

Simplified Chinese

偏锰酸矿

CNMNC symbol

Symbol

Vnd

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

German pages

DeWikiPedia - search for: Vernadit
Google-Bilder-Suche - search for: Vernadit
Mineralogisch-Petrographisches-Institut Hamburg - search for: Vernadit

English pages

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

Russian pages

Webmineral.ru - search for: Вернадит

Mineral Dealer

German pages

hausen - Mineralgroßhandel - search for: Vernadit
Crystal-Treasure.com - search for: Vernadit
Bosse - search for: Vernadit

Locations with GPS information