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Kurchatovite

Pictures (1 Images total)

Kurchatovit
Views (File:
1584801231
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Kurchatovit
weiße Partien von Kurchatovit, Solongo Bor-Lagerstätte, Vitim Plateau, Burjatien, Russland; BB ~ 3 mm, analysiert
Copyright: MinTreasure.com (Carsten Slotta); Contribution: openpit
Location: Russland/Ferner Osten, Föderationskreis/Burjatien (Buryatia), Republik/Vitim Plateau/Solongo Bor-Lagerstätte
Mineral: Kurchatovite
Image: 1584801231
License: Usage for Mineralienatlas project only
Kurchatovit

weiße Partien von Kurchatovit, Solongo Bor-Lagerstätte, Vitim Plateau, Burjatien, Russland; BB 3 mm, analysiert
Copyright: MinTreasure.com (Carsten Slotta)
Contribution: openpit 2020-03-21
Locality: Solongo Bor-Lagerstätte / Vitim Plateau / Burjatien (Buryatia), Republik / Ferner Osten, Föderationskreis / Russland

Collectors Summary

Color hellgrau
Streak color weiß
Lustre Glasglanz
Hardness (Mohs) 4.5
Solubility ++ warme HCl, - H2O
Crystal System orthorhombisch, Pbca

Chemism

Chemical formula

Ca(Mg,Mn,Fe2+)B2O5

Chemical composition

Calcium, Eisen, Magnesium, Mangan, Bor, Sauerstoff

Unit weight: 178.34792097 u; Number of atoms in the formula: 9

Info

Empirical formula:

Ca(Mg0.6Mn0.3Fe0.1)B2O5

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Boron

B

12.12

2

22.22

10.8117000

21.6234000
Oxygen

O

44.85

5

55.56

15.9994300

79.9971500
Magnesium

Mg

8.18

0.6

6.67

24.3050600

14.5830360
Calcium

Ca

22.47

1

11.11

40.0784000

40.0784000
Manganese

Mn

9.24

0.3

3.33

54.9380499

16.4814150
Iron

Fe

3.13

0.1

1.11

55.8452000

5.5845200

Analysis wt%

B2O3 : 38.22, MgO : 19.70, FeO : 1.48, MnO : 6.84, CaO : 30.23, SiO2 : 0.49, Al2O3 : 0.65, CO2 : 1.60, H2O : 0.66 (Ref: Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva, 1904-1974 66)

Strunz 9th edition incl. updates

6.BA.10

6: Borate
B: Diborate
A: Insel (Neso)-Diborate mit Doppel-Triangeln B2(O,OH)5;2(2Δ); 2(2Δ) + OH, etc.
10:Szaibelyit-Gruppe

Lapis Classification

V/H.01-030

V: NITRATE, CARBONATE UND BORATE
H: Gruppenborate
1: Planare Gruppen [B2O5] 4- bis [B2O7] 8-

Classification by Hölzel

6.BA.130

6: Borates
B: Diborates
A: Nesodiborates with double triangles B2(O,OH)5 - 2(2P) - 2(2P)+OH, etc.
1: Suanite-Kurchatovite-Group (homeotypes)

Hey's Chemical Index of Minerals

09.07.06

09: Borates
07: Borates of Mn

Dana 8th edition

24.04.02.01

24: Borates - Anhydrous
04: Borates - Anhydrous where (A)2 (X2O5)

IMA status

anerkannt 1965

Mineral status

anerkanntes Mineral

Optical Properties

Color

hellgrau

Streak color

weiß

Lustre

Glasglanz

max. Birefringence

0.063
Birefringence chart\! Kurchatovite title=Birefringence chart Kurchatovite

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

1.635

RI value β

1.681

RI value γ / ε

1.698

Ri mean

1.671

2V angle

Biaxial (-) 66°

Optical Data Luminescence

Color LW-UV (365nm)

  

violett

LW-UV Intensity

stark

Color SW-UV (254nm)

  

rot

Most Common Activator

Mn2+

Afterglow (Persistant Luminescence)

keine Daten

Crystallography

Crystal System

orthorhombisch

Class (H-M)

mmm

Space Group number

61

Space Group

Pbca

Cell parameters a (Å)

36.292

Cell parameters b (Å)

5.491

Cell parameters c (Å)

11.120

Cell parameters a/b or c/a

6.609

Cell parameters c/b

2.025

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

90°

Z

24

Volume (ų)

2215.987

X-Ray Powder Diffraction

2.97(40),
2.91(40),
2.792(100),
2.747(90),
2.449(50),
2.057(40),
1.992(80),
1.237(50)
XRD chart Kurchatovite

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

Crystal Structure 3D

Open larger view

Physical Properties

Hardness (Mohs)

4.5

VHN (Hardness Vickers)

280 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

3.1

3.207 ( ρ calc. Mineralienatlas )

Instability

++ warme HCl, - H2O

(Co-)Type locality

(Co-)Type locality

Russland/Ferner Osten, Föderationskreis/Burjatien (Buryatia), Republik/Vitim Plateau/Solongo Bor-Lagerstätte

Preface

Author (Name, Year)

Malinko & Lisitsyn & Dorofeeva & Ostravskaya & Shashkin, 1966

References

Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva 95 (1966), 203.

American Mineralogist 51 (1966), 1817.

Zapiski Vserossiyskogo Mineralogicheskogo Obshchestva 107 (1978), 276.

Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva 108 (1979), 595.

European Journal of Mineralogy 15 (2003), 277.

Other languages

German

Kurchatovit

Spanish

Kurchatovita

English

Kurchatovite

French

Kurchatovite-1M

Russian

Курчатовит

Traditional Chinese

硼鎂鈣石

Simplified Chinese

硼镁钙石

CNMNC (IMA)-Number

IMA 1965-034

CNMNC symbol

Symbol

Kht

Locations with GPS information

IDs

GUSID (Global unique identifier short form) -1D5rUY5NUexi_7SXs1e1A
GUID (Global unique identifier) ADF950FB-3946-4735-B18B-FED25ECD5ED4
Database ID 2088