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Shibkovite (Shibkovit)

Pictures (1 Images total)

Shibkovit
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1591125418
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Shibkovit
farblose Aggregate von Shibkovit in Glasampulle, Dara-i-Pioz Gletscher, Tien Shan, Tadschikistan; BB ~ 5 mm, analysiert
Copyright: MinTreasure.com (Carsten Slotta); Contribution: openpit
Location: Tadschikistan/Republik-unterstellte Gebiete (Nohijahoi tobei Dschumhurij)/Dara-i-Pioz (Darai-Pioz)
Mineral: Shibkovite
Image: 1591125418
License: Usage for Mineralienatlas project only
Shibkovit

farblose Aggregate von Shibkovit in Glasampulle, Dara-i-Pioz Gletscher, Tien Shan, Tadschikistan; BB 5 mm, analysiert
Copyright: MinTreasure.com (Carsten Slotta)
Contribution: openpit 2020-06-02
Locality: Dara-i-Pioz (Darai-Pioz) / Republik-unterstellte Gebiete (Nohijahoi tobei Dschumhurij) / Tadschikistan

Collectors Summary

Color farblos, weiß
Streak color weiß
Hardness (Mohs) 5.50 - 6.00
Cleavages keine beobachtet
Fracture treppenartig
Solubility +++ 1:1 HCl
Crystal System hexagonal, P6/mcc

Chemism

Chemical formula

K<3(Ca,Mn,Na)2Zn3[Si12O30]

Chemical composition

Calcium, Mangan, Natrium, Silicium, Zink, Kalium, Sauerstoff

Analysis wt%

Ø SiO2 : 61.33, MnO : 2.43, ZnO : 20.80, CaO : 6.00, K2O : 8.83, Na2O : 1.03 (Ref: Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva, 1904-1974 98)

Strunz 9th edition incl. updates

9.CM.05

9: Silikate (Germanate)
C: Ringsilikate (Cyclosilikate)
M: ~[Si6O18]12- sechser-Doppelringe
05:Milarit-Gruppe

Lapis Classification

VIII/E.22-137

VIII: SILIKATE
E: Ringsilikate
22: Doppelte Sechserringe [Si12O30] 12-; Milarit/Osumilith-Gruppe

Classification by Hölzel

9.CF.120

9: SILICATES
C: Cyclosilicates
F: ~[Si12O30]12--Rings Milarite-Group

Dana 8th edition

63.02.01a.16

63: Cyclosilicates Cyclosilicate Condensed Rings
02: Cyclosilicates Cyclosilicate Condensed Rings 6-membered rings
01a: Milarite - Osumilite group (Milarite - Osumilite subgroup)

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

 Osumilite Group

Optical Properties

Color

farblos, weiß

Streak color

weiß

max. Birefringence

0.002
Birefringence chart\! Shibkovite title=Birefringence chart Shibkovite

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

1.561

RI value γ / ε

1.563

Ri mean

1.562

2V angle

Uniaxial (+)

Optical Data Luminescence

MW-UV (320nm)

  

orangegelb

Color SW-UV (254nm)

  

rot

SW-UV Intensity

stark

Most Common Activator

Mn2+

Afterglow (Persistant Luminescence)

keine Daten

Crystallography

Crystal System

hexagonal

Class (H-M)

6/mmm

Space Group number

192

Space Group

P6/mcc

Cell parameters a (Å)

10.505

Cell parameters b (Å)

-

Cell parameters c (Å)

14.185

Cell parameters a/b or c/a

1.350

Cell parameters c/b

-

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

120°

Z

2

Volumne (ų)

1355.664

X-Ray Powder Diffraction

7.11(30),
3.830(100),
3.345(60),
3.304(40),
2.940(50),
2.795(80),
2.627(30),
2.111(20)
XRD chart Shibkovite

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)

5.50 - 6.00

VHN (Hardness Vickers)

609 (50g)

Density (g/cm³)

2.89 (gemessen)

Cleavages

keine beobachtet

Fracture

treppenartig

Tenacity

spröde

Instability

+++ 1:1 HCl

(Co-)Type locality

(Co-)Type locality

Tadschikistan/Republik-unterstellte Gebiete (Nohijahoi tobei Dschumhurij)/Dara-i-Pioz (Darai-Pioz)

Preface

Author (Name, Year)

Pautov & Agakhanov & Sokolova, 1998

References

Zapiski Vserossiskogo Mineralogicheskogo Obshchetstva 127 (1998) (4), 89

IMA group assignments

Other languages

German

Shibkovit

Spanish

Shibkovita

English

Shibkovite

French

Shibkovite

Russian

Шибковит

Traditional Chinese

鉀鈣鋅大隅石

Simplified Chinese

钾钙锌大隅石

CNMNC (IMA)-Number

IMA 1997-018

CNMNC symbol

Symbol

Sko

Locations with GPS information