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Natronambulite (Natronambulit)

Pictures (1 Images total)

Natronambulit, Rhodonit, Mn-Aegirin
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Natronambulit, Rhodonit, Mn-Aegirin
Natronambulit (orange), Rhodonit (rosa), Mn-Aegirin (schwarz); Größe: 61x55x48 mm; Fundort: Tanohata Mine, Shimohei, Präf. Iwate, Region Tohoku, Honshu, Japan
Copyright: Steinbock-Minerals.com; Contribution: slugslayer
Location: Japan/Honshu/Tohoku, Region/Iwate, Präfektur/Shimohei-gun/Tanohata Mine
Mineral: Aegirine, Natronambulite, Rhodonite
Image: 1446580039
License: Usage for Mineralienatlas project only
Natronambulit, Rhodonit, Mn-Aegirin

Natronambulit (orange), Rhodonit (rosa), Mn-Aegirin (schwarz); Größe: 61x55x48 mm; Fundort: Tanohata Mine, Shimohei, Präf. Iwate, Region Tohoku, Honshu, Japan
Copyright: Steinbock-Minerals.com
Contribution: slugslayer 2015-11-03
Locality: Tanohata Mine / Shimohei-gun / Iwate, Präfektur / Tohoku, Region / Honshu / Japan

Collectors Summary

Color rosa orange
Streak color sehr blass orange
Hardness (Mohs) 5.75
Crystal System triklin, P1, P1

Chemism

Chemical formula

(Na,Li)Mn4Si5O14(OH)

Chemical composition

Lithium, Mangan, Natrium, Silicium, Sauerstoff, Wasserstoff

Unit weight: 620.15687425 u; Number of atoms in the formula: 26

Info

Empirical formula:

(Na0.75Li0.25)Mn4Si5O14(OH)

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Hydrogen

H

0.16

1

3.85

1.0079470

1.0079470
Lithium

Li

0.28

0.25

0.96

6.9412000

1.7353000
Oxygen

O

38.70

15

57.69

15.9994300

239.9914500
Sodium

Na

2.78

0.75

2.88

22.9897702

17.2423277
Silicon

Si

22.64

5

19.23

28.0855300

140.4276500
Manganese

Mn

35.43

4

15.38

54.9380499

219.7521996

Analysis wt%

SiO2 : 50.39, MnO : 38.94, MgO : 1.24, CaO : 3.66, Na2O : 3.55, Li2O : 0.43, H2O : 2.00 (Ref: Min.J.Jap.85)

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.27-060

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

Classification by Hölzel

9.DP.250

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

Dana 8th edition

65.04.01.05

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

rosa orange

Streak color

sehr blass orange

Diaphaneity (Transparency)

transparent bis durchscheinend

max. Birefringence

0.024
Birefringence chart\! Natronambulite title=Birefringence chart Natronambulite

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

1.706

RI value β

1.710

RI value γ / ε

1.730

Ri mean

1.715

2V angle

Biaxial (+) 45°

Crystallography

Crystal System

triklin

Class (H-M)

1, 1

Space Group number

1, 2

Space Group

P1, P1

Cell parameters a (Å)

7.620

Cell parameters b (Å)

11.762

Cell parameters c (Å)

6.737

Cell parameters a/b or c/a

0.648

Cell parameters c/b

0.573

Cell parameters α

92.82

Cell parameters β

94.55

Cell parameters γ

106.87

Z

2

Volumne (ų)

574.355

X-Ray Powder Diffraction

7.13(50),
6.70(40),
3.559(100),
3.348(40),
3.078(40),
2.972(30),
2.506(40),
2.198(20)
XRD chart Natronambulite

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

Crystal Structure 3D

Open larger view

Physical Properties

Hardness (Mohs)

5.75

VHN (Hardness Vickers)

630 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

3.51

3.586 ( ρ calc. Mineralienatlas )

(Co-)Type locality

(Co-)Type locality

Japan/Honshu/Tohoku, Region/Iwate, Präfektur/Shimohei-gun/Tanohata Mine

Preface

Associations

Manganhaltiger Aegirin, manganhaltiger Arfvedsonit, Quarz und Rhodonit, oder mit Albit, Mikroklin, Quarz und Serandit.

Author (Name, Year)

Matsubara & Kato & Tiba, 1985

References

Mineralogical Journal (Tokyo) 12 (1985), 332

Other languages

German

Natronambulit

Spanish

Natronambulita

English

Natronambulite

French

Natronambulite

Alternative Name

Japanese

ソーダ南部石

CNMNC (IMA)-Number

IMA 1981-034

CNMNC symbol

Symbol

Nnbl

Locations with GPS information