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Manganoneptunite (Mangan-Neptunit)

Pictures (15 Images total)

Mangan-Neptunit
Views (Image: 1262864865): 775
Mangan-Neptunit

Bildbreite: 5 mm; Fundort: Poudrette quarry (Demix quarry; Uni-Mix quarry; Desourdy quarry), Mont Saint-Hilaire, Rouville Co., Québec, Kanada

Copyright: Stephan Wolfsried
Contribution: Hg 2010-01-07
Locality: Poudrette Quarry (Demix Quarry; Uni-Mix Quarry; Desourdy Quarry) / Mont Saint-Hilaire / La Vallée-du-Richelieu RCM / Montérégie, Region / Québec / Kanada
Manganoneptunit
Views (Image: 1260192522): 1343, Rating: 8.5
Manganoneptunit

Bildbreite: 3 mm; Fundort: Aris, Windhoek, Windhoek District, Khomas Region, Namibia

Copyright: Stephan Wolfsried
Contribution: Hg 2009-12-07
Locality: Aris-Steinbrüche (Ariskop Quarry; Railway Quarry) / Aris / Windhoek-Land, Kreis / Khomas, Region / Namibia
Manganoneptunit
Views (Image: 1412774227): 729
Manganoneptunit

Bildbreite: 2 mm; Fundort: Poudrette Quarry, Mont Saint-Hilaire, Rouville RCM, Region Montérégie, Québec, Kanada

Copyright: Stephan Wolfsried
Contribution: Hg 2014-10-08
Locality: Poudrette Quarry (Demix Quarry; Uni-Mix Quarry; Desourdy Quarry) / Mont Saint-Hilaire / La Vallée-du-Richelieu RCM / Montérégie, Region / Québec / Kanada
Manganoneptunit
Views (Image: 1412858737): 668
Manganoneptunit

Bildbreite: 2 mm; Fundort: Poudrette Quarry, Mont Saint-Hilaire, Rouville RCM, Region Montérégie, Québec, Kanada

Copyright: Stephan Wolfsried
Contribution: Hg 2014-10-09
Locality: Poudrette Quarry (Demix Quarry; Uni-Mix Quarry; Desourdy Quarry) / Mont Saint-Hilaire / La Vallée-du-Richelieu RCM / Montérégie, Region / Québec / Kanada
Manganoneptunit
Views (Image: 1260192580): 1967
Manganoneptunit

Bildbreite: 3 mm; Fundort: Aris, Windhoek, Windhoek District, Khomas Region, Namibia

Copyright: Stephan Wolfsried
Contribution: Hg 2009-12-07
Locality: Aris-Steinbrüche (Ariskop Quarry; Railway Quarry) / Aris / Windhoek-Land, Kreis / Khomas, Region / Namibia
Manganoneptunit
Views (Image: 1307954827): 1223
Manganoneptunit

Größe: 0,74 mm; Fundort: Aris, Windhoek, Windhoek District, Khomas Region, Namibia

Collection: Domenico Preite
Copyright: Matteo Chinellato
Contribution: Hg 2011-06-13
Locality: Aris-Steinbrüche (Ariskop Quarry; Railway Quarry) / Aris / Windhoek-Land, Kreis / Khomas, Region / Namibia

Collectors Summary

Color dunkel kirschrot, orange, schwarz
Streak color rötlichweiß
Lustre Glasglanz, Harzglanz
Hardness (Mohs) 5 - 6
Cleavages deutlich in 2 Richtungen, teilbar bei etwa 80°
Fracture uneben bis muschelig
Solubility - Säuren
Crystal System monoklin, C2/m, C2/c

Chemism

Chem­ical formula

KNa2LiMn2+2Ti2Si8O24

Chem­ical com­po­si­tion

Lithium, Mangan, Natrium, Silicium, Titan, Kalium, Sauerstoff

Unit weight: 906.2999102 u; Number of atoms in the formula: 40

Info

Empirical formula:

KNa2LiMn2Ti2Si8O24

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Lithium

Li

0.77

1

2.50

6.9412000

6.9412000

Oxygen

O

42.37

24

60.00

15.9994300

383.9863200

Sodium

Na

5.07

2

5.00

22.9897702

45.9795404

Silicon

Si

24.79

8

20.00

28.0855300

224.6842400

Potassium

K

4.31

1

2.50

39.0983100

39.0983100

Titanium

Ti

10.56

2

5.00

47.8671000

95.7342000

Manganese

Mn

12.12

2

5.00

54.9380499

109.8760998

Anal­y­sis wt%

SiO2 : 52.54, TiO2 : 17.22, FeO : 4.28, MnO : 11.14, Na2O : 6.32, K2O : 4.98, Li2O : 1.61, H2O : 0.63 (Ref: Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva, 1904-1974 65)

Strunz 9th edi­tion incl. updates

9.EH.05

9: Silikate (Germanate)
E: Schichtsilikate (Phyllosilikate)
H: Übergangsstrukturen zwischen Schichtsilikaten und anderen Silikaten
05:Neptunit-Gruppe

Lapis Clas­sifica­tion

VIII/F.37-020

VIII: SILIKATE
F: Ketten- und Bandsilikate
37: Komplexe Kettenstrukturen (Zylinderketten u.a.)

Clas­sifica­tion by Hölzel

9.DT.110

9: SILICATES
D: Inosilicates; ~[Si2O6]4--...2-Chain
T: Chains in 3 Directions Neptunite-Group
1: Neptunite-Group

Dana 8th edi­tion

70.04.01.02

70: Inosilicates Inosilicate Column or Tube Structures
04: Inosilicates Inosilicate Column or Tube Structures with linked chains forming cages
01: Neptunite group

Optical Properties

Color

dunkel kirschrot, orange, schwarz

Streak color

rötlichweiß

Diaphane­ity (Trans­parency)

durchscheinend, opak

Lus­tre

Glasglanz, Harzglanz

max. Birefrin­gence

0.028

Birefringence chart\! Manganoneptunite title=Birefringence chart Manganoneptunite

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

1.697

RI value β

1.700

RI value γ / ε

1.725

Ri mean

1.707

2V angle

Biaxial (+) 31° bis 36° (gemessen) 35.1° (berechnet)

Ori­enta­tion

Y = b, Z ^ c = 16° bis 20°

Dis­per­sion

sehr stark, r < v

Absorp­tion

Z > Y > X

Pleochro­ism

X = hellgelb, Y = orange oder gelborange, Z = rotorange

Crystallography

Crystal Sys­tem

monoklin

Class (H-M)

2/m

Space Group number

12,15

Space Group

C2/m, C2/c

Cell param­e­ters a (Å)

16.38

Cell param­e­ters b (Å)

12.48

Cell param­e­ters c (Å)

10.01

Cell param­e­ters a/b or c/a

1.312

Cell param­e­ters c/b

0.802

Cell param­e­ters α

90°

Cell param­e­ters β

115.40

Cell param­e­ters γ

90°

Z

4

Volumne (ų)

1848.466

X-Ray Pow­der Diffrac­tion

2.948(50),
2.899(50),
2.841(60),
2.485(100),
2.170(80),
1.924(70),
1.506(100),
1.483(90)

XRD chart Manganoneptunite

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)

5 - 6

VHN (Hard­ness Vick­ers)

470 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

3.23

3.256 ( ρ calc. Mineralienatlas )

Cleav­ages

deutlich in 2 Richtungen, teilbar bei etwa 80°

Frac­ture

uneben bis muschelig

Tenac­ity

spröde

Insta­bil­ity

- Säuren

References

Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva 94 (1965), 204.

Handbook of Mineralogy (Anthony u.w.), 2 (1995), 514.

Other languages

German

Manganoneptunit

Spanish

Manganoneptunita

English

Manganoneptunite

Russian

Манганнептунит

Traditional Chinese

錳柱星葉石

Simplified Chinese

锰柱星叶石

old name

French

Mangan-Neptunite

English

Mangan-neptunite

Alternative Name

German

Mangan-Neptunit

German

Manganneptunit

Spanish

Manganneptunita

Manganneptunite

Mn-Neptunite

CNMNC symbol

Symbol

Mnnpt

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

German pages

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

English pages

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

Russian pages

Webmineral.ru - search for: Манганнептунит

Mineral Dealer

German pages

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

Locations with GPS information