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Natisite

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Fundgebiet Alluaiv im Lovozero Massiv, auf der Halbinsel Kola, Russland BB.: ca. 9mm
Copyright: Daniel Neumann; Contribution: Neumann
Collection: Daniel Neumann, Collection number: 00725.
Location: Russland/Nordwestrussland, Föderationskreis/Murmansk, Oblast/Kola-Halbinsel/Lovozero/Alluaiv
Mineral: Natisite
Image: 1350153138
Rating: 3.5 (votes: 2)
License: Usage for Mineralienatlas project only
NATISIT (SNr: 00725.)

Fundgebiet Alluaiv im Lovozero Massiv, auf der Halbinsel Kola, Russland BB.: ca. 9mm

Collection: Daniel Neumann
Copyright: Daniel Neumann
Contribution: Neumann 2012-10-13
Locality: Alluaiv / Lovozero / Kola-Halbinsel / Murmansk, Oblast / Nordwestrussland, Föderationskreis / Russland

Collectors Summary

Color grünlich grau, gelbgrün
Streak color weiß
Hardness (Mohs) 3.5
Solubility - kalte verdünnte Säuren
Crystal System tetragonal, P4/nmm

Chemism

Chemical formula

Na2(TiO)SiO4

Chemical composition

Natrium, Silicium, Titan, Sauerstoff

Unit weight: 201.9293204 u; Number of atoms in the formula: 9

Info

Empirical formula:

Na2(TiO)SiO4

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Oxygen

O

39.62

5

55.56

15.9994300

79.9971500

Sodium

Na

22.77

2

22.22

22.9897702

45.9795404

Silicon

Si

13.91

1

11.11

28.0855300

28.0855300

Titanium

Ti

23.70

1

11.11

47.8671000

47.8671000

Analysis wt%

Ø SiO2 : 29.77, TiO2 : 38.93, Nb2O5 : 0.72, FeO : 0.52, Na2O : 30.32 (Ref: Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva, 1904-1974 85)

Strunz 9th edition incl. updates

9.AG.40

9: Silikate (Germanate)
A: Inselsilikate (Nesosilikate)
G: Insel(Neso)silikate mit zusätzlichem Anionen; Kationen in meist [6] und > [6] Koordination
40:Natisit-Gruppe

Lapis Classification

VIII/B.13-010

VIII: SILIKATE
B: Inselsilikate mit tetraederfremden Anionen
13: Kationen mit Koordinationszahlen zwischen [8] und [12]

Classification by Hölzel

9.AG.400

9: SILICATES
A: Nesosilicates
G: Nesosilicates with Cation: O
4: C small + large; Titanite-Group

Dana 8th edition

52.04.04.01

52: Nesosilicates Nesosilicate Insular SiO4 Groups and O, OH, F, and H2O
04: Nesosilicates Nesosilicate Insular SiO4 Groups and O, OH, F, and H2O with cations in [6] and/or > [6] coordination
04: Natisite - Yftisite group

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

Optical Properties

Color

grünlich grau, gelbgrün

Streak color

weiß

max. Birefringence

0.076

Birefringence chart\! Natisite title=Birefringence chart Natisite

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

1.756

RI value γ / ε

1.680

Ri mean

1.731

2V angle

Uniaxial (-)

Optical Data Luminescence

Color SW-UV (254nm)

 

bläulich weiß

Most Common Activator

TiO6

Afterglow (Persistant Luminescence)

keine Daten

Crystallography

Crystal System

tetragonal

Class (H-M)

4/mmm

Space Group number

129

Space Group

P4/nmm

Cell parameters a (Å)

6.50

Cell parameters b (Å)

-

Cell parameters c (Å)

5.07

Cell parameters a/b or c/a

0.780

Cell parameters c/b

-

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

90°

Z

2

Volumne (ų)

214.208

X-Ray Powder Diffraction

5.05(80),
3.96(50),
2.709(100),
2.521(50),
2.349(60),
1.689(70),
1.611(50),
1.100(60)

XRD chart Natisite

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)

3.5

VHN (Hardness Vickers)

130 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

3.15

3.131 ( ρ calc. Mineralienatlas )

Instability

- kalte verdünnte Säuren

Preface

Author (Name, Year)

Men'shikov & Pakhomovskiy & Goyko & Bussen & Mer'kov, 1975

References

Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva 104 (1975), 314

Other languages

German

Natisit

Spanish

Natisita

English

Natisite

French

Natisite

Russian

Натисит

CNMNC (IMA)-Number

IMA 1974-035

CNMNC symbol

Symbol

Nts

Locations with GPS information