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Nambulite (Nambulit)

Pictures (4 Images total)

Nambulit
Views (File:
1229136027
): 1473, Rating: 5.83
Nambulit
Fundort: Gozaisho Mine, Iwaki, Fukushima-Präfektur, Honshu, Japan; Größe: Kristall 9 mm
Copyright: Maurice de Graaf; Contribution: slugslayer
Location: Japan/Honshu/Tohoku, Region/Fukushima, Präfektur/Iwaki/Gozaisho Mine
Mineral: Nambulite
Image: 1229136027
Rating: 5.83 (votes: 6)
License: Usage for Mineralienatlas project only
Nambulit

Fundort: Gozaisho Mine, Iwaki, Fukushima-Präfektur, Honshu, Japan; Größe: Kristall 9 mm
Copyright: Maurice de Graaf
Contribution: slugslayer 2008-12-13
Locality: Gozaisho Mine / Iwaki / Fukushima, Präfektur / Tohoku, Region / Honshu / Japan
Nambulit
Views (File:
1286897684
): 1171
Nambulit
Bildbreite: 6 mm, Fundort: Gozaisho Mine, Iwaki, Fukushima, Region Tohoku, Honshu, Japan
Copyright: Luigi Chiappino; Contribution: thdun5
Location: Japan/Honshu/Tohoku, Region/Fukushima, Präfektur/Iwaki/Gozaisho Mine
Mineral: Nambulite
Image: 1286897684
License: Usage for Mineralienatlas project only
Nambulit

Bildbreite: 6 mm, Fundort: Gozaisho Mine, Iwaki, Fukushima, Region Tohoku, Honshu, Japan
Copyright: Luigi Chiappino
Contribution: thdun5 2010-10-12
Locality: Gozaisho Mine / Iwaki / Fukushima, Präfektur / Tohoku, Region / Honshu / Japan
Rhodonit-Nambulit-Mischkristall
Views (File:
1679249993
): 11
Rhodonit-Nambulit-Mischkristall
Etwa 32 mm x 6 mm großer Rhodonit-Nambulit-Mischkristall von Morro da Mina, Conselheiro Lafaiete, Minas Gerais, Brasilien.
Copyright: Klaus Schäfer; Contribution: Klaus Schäfer
Collection: Klaus Schäfer, Collection number: SyS-Rhod-2-1-5
Location: Brasilien/Südosten (Região Sudeste)/Minas Gerais/Conselheiro Lafaiete/Morro da Mina
Mineral: Nambulite, Rhodonite
Image: 1679249993
License: Usage for Mineralienatlas project only
Rhodonit-Nambulit-Mischkristall (SNr: SyS-Rhod-2-1-5)

Etwa 32 mm x 6 mm großer Rhodonit-Nambulit-Mischkristall von Morro da Mina, Conselheiro Lafaiete, Minas Gerais, Brasilien.
Collection: Klaus Schäfer
Copyright: Klaus Schäfer
Contribution: Klaus Schäfer 2023-03-19
Locality: Morro da Mina / Conselheiro Lafaiete / Minas Gerais / Südosten (Região Sudeste) / Brasilien
Rhodonit-Nambulit-Mischkristall
Views (File:
1679250066
): 9
Rhodonit-Nambulit-Mischkristall
Etwa 37 mm x 25 mm große Stufe mit Rhodonit-Nambulit-Mischkristallen von Morro da Mina, Conselheiro Lafaiete, Minas Gerais, Brasilien.
Copyright: Klaus Schäfer; Contribution: Klaus Schäfer
Collection: Klaus Schäfer, Collection number: SyS-Rhod-3-2-1
Location: Brasilien/Südosten (Região Sudeste)/Minas Gerais/Conselheiro Lafaiete/Morro da Mina
Mineral: Nambulite, Rhodonite
Image: 1679250066
License: Usage for Mineralienatlas project only
Rhodonit-Nambulit-Mischkristall (SNr: SyS-Rhod-3-2-1)

Etwa 37 mm x 25 mm große Stufe mit Rhodonit-Nambulit-Mischkristallen von Morro da Mina, Conselheiro Lafaiete, Minas Gerais, Brasilien.
Collection: Klaus Schäfer
Copyright: Klaus Schäfer
Contribution: Klaus Schäfer 2023-03-19
Locality: Morro da Mina / Conselheiro Lafaiete / Minas Gerais / Südosten (Região Sudeste) / Brasilien

Collectors Summary

Color rötlich orange braun
Streak color hellgelb
Hardness (Mohs) 6.5
Crystal System triklin, P1

Chemism

Chemical formula

(Li,Na)(Mn,Ca)4Si5O14(OH)

Chemical composition

Calcium, Lithium, Mangan, Natrium, Silicium, Sauerstoff, Wasserstoff

Unit weight: 597.27293925 u; Number of atoms in the formula: 26

Info

Empirical formula:

(Li0.75Na0.25)(Mn0.75Ca0.25)4Si5O14(OH)

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Hydrogen

H

0.17

1

3.85

1.0079470

1.0079470
Lithium

Li

0.87

0.75

2.88

6.9412000

5.2059000
Oxygen

O

40.18

15

57.69

15.9994300

239.9914500
Sodium

Na

0.96

0.25

0.96

22.9897702

5.7474426
Silicon

Si

23.51

5

19.23

28.0855300

140.4276500
Calcium

Ca

6.71

1

3.85

40.0784000

40.0784000
Manganese

Mn

27.59

3

11.54

54.9380499

164.8141497

Analysis wt%

SiO2 : 49.23, Fe2O3 : 0.40, MgO : 1.32, MnO : 40.67, CaO : 0.81, Na2O : 2.49, Li2O : 1.55, H2O : 1.89 (Ref: Min.J.Jap.72)

Strunz 9th edition incl. updates

9.DK.05

9: Silikate (Germanate)
D: Ketten- und Bandsilikate (Inosilikate)
K: Ketten- und Bandsilikate mit 5-periodischen Einzelketten
05:Rhodonit-Gruppe

Lapis Classification

VIII/F.27-050

VIII: SILIKATE
F: Ketten- und Bandsilikate
27: Fünferketten [Si5O15] 10-

Classification by Hölzel

9.DP.230

9: SILICATES
D: Inosilicates; ~[Si2O6]4--...2-Chain
P: ~[Si5O15]10--...5-Chain Rhodonite-Group

Dana 8th edition

65.04.01.04

65: Inosilicate Minerals
04: Inosilicates Inosilicate Single-Width Unbranched Chains, W=1 with chains P=5
01: Rhodonite group

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

Optical Properties

Color

rötlich orange braun

Streak color

hellgelb

Diaphaneity (Transparency)

transparent bis durchscheinend

max. Birefringence

0.023
Birefringence chart\! Nambulite title=Birefringence chart Nambulite

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

1.707

RI value β

1.710

RI value γ / ε

1.730

Ri mean

1.716

2V angle

Biaxial (+) 30°

Crystallography

Crystal System

triklin

Class (H-M)

1

Space Group number

2

Space Group

P1

Cell parameters a (Å)

7.621

Cell parameters b (Å)

11.761

Cell parameters c (Å)

6.731

Cell parameters a/b or c/a

0.648

Cell parameters c/b

0.572

Cell parameters α

92.77

Cell parameters β

95.8

Cell parameters γ

106.87

Z

2

Volumne (ų)

572.471

X-Ray Powder Diffraction

3.34(40),
3.17(60),
3.14(40),
3.09(50),
3.07(60),
2.97(80),
2.96(100),
2.92(70)
XRD chart Nambulite

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)

6.5

VHN (Hardness Vickers)

960 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

3.51

3.465 ( ρ calc. Mineralienatlas )

(Co-)Type locality

(Co-)Type locality

Japan/Honshu/Tohoku, Region/Iwate, Präfektur/Kitakami Gebirge/Tunakozowa Mine

Preface

Author (Name, Year)

Yoshi & Aoki & Maeda, 1972

References

Mineralogical Journal (Tokyo) 7 (1972), 29

Other languages

German

Nambulit

Spanish

Nambulita

English

Nambulite

French

Nambulite

Russian

Намбулит

Alternative Name

English

Lithium-hydrorhodonite

Japanese

南部石

CNMNC (IMA)-Number

IMA 1971-032

CNMNC symbol

Symbol

Nbl

Locations with GPS information