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Korobitsynite (Korobitsynit)

Pictures (2 Images total)

Korobitsynit
Views (File:
1281212498
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Korobitsynit
Bildbreite: 3,6 mm; Fundort: Alluaiv, Lovozero-Massiv, Kola-Halbinsel, Murmansk, Russland
Copyright: Joachim Esche; Contribution: slugslayer
Location: Russland/Nordwestrussland, Föderationskreis/Murmansk, Oblast/Kola-Halbinsel/Lovozero/Alluaiv
Mineral: Korobitsynite
Image: 1281212498
Rating: 7 (votes: 1)
License: Usage for Mineralienatlas project only
Korobitsynit

Bildbreite: 3,6 mm; Fundort: Alluaiv, Lovozero-Massiv, Kola-Halbinsel, Murmansk, Russland
Copyright: Joachim Esche
Contribution: slugslayer 2010-08-07
Locality: Alluaiv / Lovozero / Kola-Halbinsel / Murmansk, Oblast / Nordwestrussland, Föderationskreis / Russland
Korobitsynit
Views (File:
1247600679
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Korobitsynit
Bildbreite: 1,5 mm; Fundort: Aris, Windhoek, Windhoek District, Khomas Region, Namibia
Copyright: Joachim Esche; Contribution: slugslayer
Location: Namibia/Khomas, Region/Windhoek-Land, Kreis/Aris/Aris-Steinbrüche (Ariskop Quarry; Railway Quarry)
Mineral: Korobitsynite
Image: 1247600679
License: Usage for Mineralienatlas project only
Korobitsynit

Bildbreite: 1,5 mm; Fundort: Aris, Windhoek, Windhoek District, Khomas Region, Namibia
Copyright: Joachim Esche
Contribution: slugslayer 2009-07-14
Locality: Aris-Steinbrüche (Ariskop Quarry; Railway Quarry) / Aris / Windhoek-Land, Kreis / Khomas, Region / Namibia

Collectors Summary

Color farblos, gelblichweiß
Streak color weiß
Hardness (Mohs) 5
Cleavages unvollkommen
Fracture rauh
Solubility +++ Säuren
Crystal System orthorhombisch, Pbam

Chemism

Chemical formula

Na6-8(Ti,Nb)4[(OH,O)2|Si4O12]2·8H2O

Chemical composition

Natrium, Niob, Silicium, Titan, Sauerstoff, Wasserstoff

Unit weight: 1217.2507864 u; Number of atoms in the formula: 74

Info

Empirical formula:

Na7(Ti0.75Nb0.25)4[((OH)0.75O0.25)2Si4O12]2·8H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Hydrogen

H

1.57

19

25.68

1.0079470

19.1509930
Oxygen

O

47.32

36

48.65

15.9994300

575.9794800
Sodium

Na

13.22

7

9.46

22.9897702

160.9283914
Silicon

Si

18.46

8

10.81

28.0855300

224.6842400
Titanium

Ti

11.80

3

4.05

47.8671000

143.6013000
Niobium

Nb

7.63

1

1.35

92.9063820

92.9063820

Analysis wt%

SiO2 : 40.91, Nb2O5 : 10.14, TiO2 : 21.38, BaO : 0.54, Na2O : 13.87, H2O : 12.20 (Ref: Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva, 1904-1974 99)

Strunz 9th edition incl. updates

9.CE.40

9: Silikate (Germanate)
C: Ringsilikate (Cyclosilikate)
E: [Si4O12]8- vierer-Einfachringe, ohne inselartige komplexe [Anionen]
40:Nenadkevichit-Gruppe

Lapis Classification

VIII/E.07-010

VIII: SILIKATE
E: Ringsilikate
7: Viererringe [Si4O12] 8-; Labuntsovit-Gruppe

Classification by Hölzel

9.CB.640

9: SILICATES
C: Cyclosilicates
B: ~[Si4O12]8-, ~[Si4O10]4--Rings
6: Labuntsovite-Subgroup - Orthorhombic

Dana 8th edition

60.01.03a.02

60: Cyclosilicates Cyclosilicate Four-Membered Rings
01: Cyclosilicates Cyclosilicate Four-Membered Rings as Titanosilicates
03a: Labuntsovite Group (Nenadkevichite subgroup Orthorhombic [Pbam])

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

 Labuntsovite supergroup  ⇒ Nenadkevichite group

Optical Properties

Color

farblos, gelblichweiß

Streak color

weiß

max. Birefringence

0.117
Birefringence chart\! Korobitsynite title=Birefringence chart Korobitsynite

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

1.646

RI value β

1.654

RI value γ / ε

1.763

Ri mean

1.688

2V angle

Biaxial (+) 30°

Crystallography

Crystal System

orthorhombisch

Class (H-M)

mmm

Space Group number

55

Space Group

Pbam

Cell parameters a (Å)

7.349

Cell parameters b (Å)

14.164

Cell parameters c (Å)

7.130

Cell parameters a/b or c/a

0.519

Cell parameters c/b

0.503

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

90°

Z

1

Volumne (ų)

742.171

X-Ray Powder Diffraction

7.09(70),
6.53(80),
3.262(100),
3.180(50),
2.649(40),
2.553(60),
2.075(60),
1.735(50)
XRD chart Korobitsynite

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

VHN (Hardness Vickers)

390 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

2.72 (gemessen)

2.723 ( ρ calc. Mineralienatlas )

Cleavages

unvollkommen

Fracture

rauh

Tenacity

spröde

Instability

+++ Säuren

(Co-)Type locality

(Co-)Type locality

Russland/Nordwestrussland, Föderationskreis/Murmansk, Oblast/Kola-Halbinsel/Lovozero/Alluaiv

Russland/Nordwestrussland, Föderationskreis/Murmansk, Oblast/Kola-Halbinsel/Lovozero/Karnasurt, Berg

Russland/Nordwestrussland, Föderationskreis/Murmansk, Oblast/Kola-Halbinsel/Lovozero/Alluaiv/Umbozerskiy Mine

Preface

Author (Name, Year)

Pekov & Chukanov & Khomyakov & Rastsvetaeva & Kucherinenko & Nedel'ko,

References

Zapiski Vserossiskogo Mineralogicheskogo Obshchetstva 128 (1999) (3), 72

IMA group assignments

 
Labuntsovite supergroup
 
 
 

 
 
Nenadkevichite group
 
 
 

 
 
 
Korobitsynite
Na6-8(Ti,Nb)4[(OH,O)2|Si4O12]2·8H2O
orthorhombisch
Pbam

 
 
 
Nenadkevichite
Na6-8(Nb,Ti)4[(OH,O)2|Si4O12]2·8H2O
orthorhombisch
Pbam

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Actuality: 25. Mar 2023 - 00:26:12

Other languages

German

Korobitsynit

Spanish

Korobitsynita

French

Korobitsynite

English

Korobitsynite

Russian

Коробицынит

Alternative Name

UM1997-//-SiO:HNaNbTi

Unnamed (Ti analogue of Nenadkevichite)

CNMNC symbol

Symbol

Kbi

Locations with GPS information