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Hollandite (Hollandit)

Pictures (24 Images total)

Hollandit
Views (File:
1506195455
): 1774, Rating: 9.5
Hollandit
Grube Neue Rhonard bei Olpe. Stufengröße: 10 x 8 cm; Macroaufnahme: Stackingverfahren aus 4 Einzelbilder
Copyright: Matthias Reinhardt; Contribution: Matthias Reinhardt
Collection: Matthias Reinhardt
Location: Deutschland/Nordrhein-Westfalen/Arnsberg, Bezirk/Olpe, Kreis/Grube Neue Rhonard
Mineral: Hollandite
Image: 1506195455
Rating: 9.5 (votes: 8)
License: Usage for Mineralienatlas project only
Hollandit  X
Analysed with X-ray diffraction XRD

Grube Neue Rhonard bei Olpe. Stufengröße: 10 x 8 cm; Macroaufnahme: Stackingverfahren aus 4 Einzelbilder
Collection: Matthias Reinhardt
Copyright: Matthias Reinhardt
Contribution: Matthias Reinhardt 2017-09-23
Locality: Grube Neue Rhonard / Olpe, Kreis / Arnsberg, Bezirk / Nordrhein-Westfalen / Deutschland
Hollandit
Views (File:
1389006695
): 2127
Hollandit
Schmale langtafelige silberschwarze Kristalle, BB = 3,8 mm, Fundort: Swastika Mine, Ghosttown Cleator, Cleator, Black Canyon District, Wickenburg Mts, Yavapai Co., Arizona, USA.
Copyright: Bebo; Contribution: Münchener Micromounter
Collection: Lithothek der Münchener Micromounter, Collection number: A006566, Donator: eschuhbauer
Location: USA/Arizona/Yavapai Co./Black Canyon District/Cleator/Swastika Mine (Swastica Mine)
Mineral: Hollandite
Image: 1389006695
Rating: 8 (votes: 1)
License: Usage for Mineralienatlas project only
Hollandit (SNr: A006566)

Schmale langtafelige silberschwarze Kristalle, BB = 3,8 mm, Fundort: Swastika Mine, Ghosttown Cleator, Cleator, Black Canyon District, Wickenburg Mts, Yavapai Co., Arizona, USA.
Collection: Lithothek der Münchener Micromounter
Copyright: Bebo
Contribution: Münchener Micromounter 2014-01-06
Locality: Swastika Mine (Swastica Mine) / Cleator / Black Canyon District / Yavapai Co. / Arizona / USA
Hollandit
Views (File:
1179925354
): 2378
Hollandit
Fundort: Esperanza Mine, Revier Km3, Lavrion, Griechenland; Bildbreite: 8 mm
Copyright: Fritz Schreiber; Contribution: Klinoklas
Location: Griechenland/Attika (Attikí, Attica)/East Attica/Lavreotiki/Lavrion (Laurion), Bergbaudistrikt/Km 3, Revier/Kaminiza Minen/Esperanza Mine
Mineral: Hollandite
Image: 1179925354
Rating: 6.5 (votes: 2)
License: Usage for Mineralienatlas project only
Hollandit

Fundort: Esperanza Mine, Revier Km3, Lavrion, Griechenland; Bildbreite: 8 mm
Copyright: Fritz Schreiber
Contribution: Klinoklas 2007-05-23
Locality: Esperanza Mine / Kaminiza Minen / Km 3, Revier / Lavrion (Laurion), Bergbaudistrikt / Lavreotiki / East Attica / Attika (Attikí, Attica) / Griechenland
Hollandit
Views (File:
1179925444
): 2930
Hollandit
Fundort: Esperanza Mine, Revier Km3, Lavrion, Griechenland; Bildbreite: 10 mm
Copyright: Fritz Schreiber; Contribution: Klinoklas
Location: Griechenland/Attika (Attikí, Attica)/East Attica/Lavreotiki/Lavrion (Laurion), Bergbaudistrikt/Km 3, Revier/Kaminiza Minen/Esperanza Mine
Mineral: Hollandite
Image: 1179925444
Rating: 7 (votes: 2)
License: Usage for Mineralienatlas project only
Hollandit

Fundort: Esperanza Mine, Revier Km3, Lavrion, Griechenland; Bildbreite: 10 mm
Copyright: Fritz Schreiber
Contribution: Klinoklas 2007-05-23
Locality: Esperanza Mine / Kaminiza Minen / Km 3, Revier / Lavrion (Laurion), Bergbaudistrikt / Lavreotiki / East Attica / Attika (Attikí, Attica) / Griechenland
Hollandit
Views (File:
1327778730
): 2786
Hollandit
Hollanditstern in Quarz; Bildbreite: 20 mm; Fundort: Anketsaketsa, Ambatofinandrahana, Amoron'i Mania, Provinz Fianarantsoa, Madagaskar
Copyright: Michael Roarke; Contribution: slugslayer
Location: Madagaskar/Amoron'i Mania, Region/Ambatofinandrahana, Distrikt/Anketsaketsa (Ketsaketsa)
Mineral: Hollandite
Image: 1327778730
Rating: 6.5 (votes: 2)
License: Usage for Mineralienatlas project only
Hollandit

Hollanditstern in Quarz; Bildbreite: 20 mm; Fundort: Anketsaketsa, Ambatofinandrahana, Amoron'i Mania, Provinz Fianarantsoa, Madagaskar
Copyright: Michael Roarke
Contribution: slugslayer 2012-01-28
Locality: Anketsaketsa (Ketsaketsa) / Ambatofinandrahana, Distrikt / Amoron'i Mania, Region / Madagaskar
Hollandit in Quarz
Views (File:
1352590900
): 2485
Hollandit in Quarz
FO.: Anketsaketsa (Ketsaketsa), Ambatofinandrahana District, Region Amoron'i Mania, Provinz Fianarantsoa, Madagaskar / Stufengröße: 11 x 9,5 cm
Copyright: Hrouda; Contribution: Hrouda
Collection: Hrouda
Location: Madagaskar/Amoron'i Mania, Region/Ambatofinandrahana, Distrikt/Anketsaketsa (Ketsaketsa)
Mineral: Hollandite
Image: 1352590900
Rating: 7 (votes: 2)
License: Usage for Mineralienatlas project only
Hollandit in Quarz

FO.: Anketsaketsa (Ketsaketsa), Ambatofinandrahana District, Region Amoron'i Mania, Provinz Fianarantsoa, Madagaskar / Stufengröße: 11 x 9,5 cm
Collection: Hrouda
Copyright: Hrouda
Contribution: Hrouda 2012-11-11
Locality: Anketsaketsa (Ketsaketsa) / Ambatofinandrahana, Distrikt / Amoron'i Mania, Region / Madagaskar

You find additional Hollandit specimen at the Geolitho Museum

Collectors Summary

Color grauschwarz, schwarz, silberschwarz
Streak color schwarz
Lustre Metallglanz
Hardness (Mohs) 4 - 6
Solubility +++ HCl
Crystal System monoklin, I2/m

Additional information / Summary

In 2012 überarbeitete die IMA die Nomenklatur für die Hollandit-Supergruppe. Hollandit wird nun neu definiert als das (mehr verbreitete) Ba-Mn3+ Endglied der Coronadit-Gruppe. Das Typmaterial für Hollandit ist nun Ferrihollandit, ein neuer Name für das Ba-Fe3+ Endglied (Biagioni et al 2013).

Die ursprüngliche Typlokalität für Hollandit ist nun die des Ferrihollandit; die Lokation für den Neotyp von Hollandit ist Gowari Wadhona (fälschlich auch "Gowani Wadhona" in Biagioni et al 2013).

Das bisher als Hollandit bezeichnete Mineral ist nun unter Ferrihollandit zu finden.

Chemism

Chemical formula

Ba(Mn4+6Mn3+2)O16

Chemical composition

Barium, Mangan, Sauerstoff

Unit weight: 832.8229792 u; Number of atoms in the formula: 25

Info

Empirical formula:

Ba(Mn6Mn2)O16

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Oxygen

O

30.74

16

64.00

15.9994300

255.9908800
Manganese

Mn

52.77

8

32.00

54.9380499

439.5043992
Barium

Ba

16.49

1

4.00

137.3277000

137.3277000

Analysis wt%

BaO : 16.08, Al2O3 : 0.50, Fe2O3 : 12.02, MnO : 5.44, MnO2 : 65.92 (Ref: Acta Crystallographica 60)

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.08-060

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

Hey's Chemical Index of Minerals

07.04.17

07: Oxides and Hydroxides
04: Oxides of Be, Mg and the alkaline earths

Dana 8th edition

07.09.01.01

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

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

 Hollandite supergroup  ⇒ Coronadite group

Optical Properties

Color

grauschwarz, schwarz, silberschwarz

Streak color

schwarz

Diaphaneity (Transparency)

opak

Lustre

Metallglanz

Crystallography

Crystal System

monoklin

Class (H-M)

2/m

Space Group number

12

Space Group

I2/m

Cell parameters a (Å)

10.006

Cell parameters b (Å)

2.866

Cell parameters c (Å)

9.746

Cell parameters a/b or c/a

3.491

Cell parameters c/b

3.401

Cell parameters α

90°

Cell parameters β

91.17°

Cell parameters γ

90°

Z

1

Volumne (ų)

279.43

X-Ray Powder Diffraction

7.02(8), 6.88(7), 4.99(16), 4.85(25), 3.51(18), 3.44(22), 3.16(37), 3.12(100), 3.09(89), 3.06(42), 2.747(2), 2.498(11), 2.433(8), 2.398(27), 2.347(3), 2.301(1), 2.241(5), 2.204(35), 2.168(18), 2.145(11), 1.991(2), 1.963(11), 1.920(2), 1.905(3), 1.853(9), 1.843(5), 1.826(6), 1.817(12), 1.765(4), 1.726(3), 1.696(8), 1.688(3), 1.666(21), 1.623(21), 1.561(3), 1.545(18), 1.542(20), 1.536(4), 1.409(2), 1.394(1), 1.371(15), 1.349(2), 1.344(7)
XRD chart Hollandite

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 - 6

Density (g/cm³)

4.95 (gemessen)

4.949 ( ρ calc. Mineralienatlas )

Instability

+++ HCl

(Co-)Type locality

(Co-)Type locality

Indien/Madhya Pradesh/Chhindwara, Distrikt/Sausar/Gwari-Wadhona/Gowari Wadhona Mine

Preface

Name from

Dr. Thomas Henry Holland (1868-1947), Direktor des Indian Geological Survey.

References

The crystal structure of hollandite - Locality: Gowari Wadhona, India - Database code amcsd 0014428, Mineralogical Journal 13 (1986) 119-129 - [Röntgenstrukturanalyse]

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

Acta Crystallographica B38 (1982) 1056-1065

Fe3+ Hollandite - Stuor Njuoskes, Sweden - Diffraction Data - [Diffraction-Data]

IMA group assignments

 
Hollandite supergroup
 
 
 

 
 
Coronadite group
 
 
 

 
 
 
Coronadite
Pb(Mn4+6Mn3+2)O16
monoklin
I2/m

 
 
 
Cryptomelane
K(Mn4+7Mn3+)O16
tetragonal
I4/m

 
 
 
Cryptomelane-1Q
K(Mn4+7Mn3+)O16
 
 

 
 
 
Ferrihollandite
Ba(Mn4+6Fe3+2)O16
monoklin
I2/m

 
 
 
Hollandite
Ba(Mn4+6Mn3+2)O16
monoklin
I2/m

 
 
 
Manjiroite
Na(Mn4+7Mn3+)O16
tetragonal
I4/m

 
 
 
Strontiomelane
Sr(Mn4+6Mn3+2)O16
monoklin
P21/c

 
 
 
Thalliomelane
TlMn4+7.5Cu2+0.5O16
tetragonal
I4/m

Refresh list

Actuality: 20. Mar 2023 - 12:57:55

Other languages

German

Hollandit

English

Hollandite

Russian

Голландит

Traditional Chinese

錳鋇礦

Simplified Chinese

锰钡矿

Japanese

ﾎ-ﾗﾝﾄﾞ鉱

Alternative Name

Italian

Hollandita

CNMNC symbol

Symbol

Hol

Locations with GPS information