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Ekaterinite

Pictures (2 Images total)

Ekaterinit
Views (File:
1584515501
): 235
Ekaterinit
weisse Massen von Ekaterinit, Korshunovskoye, Zheleznogorsk, Russland; BB ~ 3 mm, analysiert
Copyright: MinTreasure.com (Carsten Slotta); Contribution: openpit
Location: Russland/Sibirien, Föderationskreis/Irkutsk (Irkutskaja), Oblast/Korshunovskoye (Korzunovskoe; Korzhunovska)
Mineral: Ekaterinite
Image: 1584515501
License: Usage for Mineralienatlas project only
Ekaterinit

weisse Massen von Ekaterinit, Korshunovskoye, Zheleznogorsk, Russland; BB 3 mm, analysiert

Copyright: MinTreasure.com (Carsten Slotta)
Contribution: openpit 2020-03-18
Locality: Korshunovskoye (Korzunovskoe; Korzhunovska) / Irkutsk (Irkutskaja), Oblast / Sibirien, Föderationskreis / Russland
Ekaterinit
Views (File:
1590218350
): 186
Ekaterinit
Ekaterinit als 1,5 cm grosse Stufe; Korshunovskoye,Sibirien
Copyright: Rockhounder; Contribution: Rockhounder
Collection: Rockhounder
Location: Russland/Sibirien, Föderationskreis/Irkutsk (Irkutskaja), Oblast/Korshunovskoye (Korzunovskoe; Korzhunovska)
Mineral: Ekaterinite
Image: 1590218350
License: Usage for Mineralienatlas project only
Ekaterinit

Ekaterinit als 1,5 cm grosse Stufe; Korshunovskoye,Sibirien

Collection: Rockhounder
Copyright: Rockhounder
Contribution: Rockhounder 2020-05-23
Locality: Korshunovskoye (Korzunovskoe; Korzhunovska) / Irkutsk (Irkutskaja), Oblast / Sibirien, Föderationskreis / Russland

Collectors Summary

Color weiß-rosa
Streak color weiß
Hardness (Mohs) 1
Solubility +++ H2O
Crystal System hexagonal, P6

Chemism

Chemical formula

Ca2B4O7(Cl,OH)2·2H2O

Chemical composition

Calcium, Chlor, Bor, Sauerstoff, Wasserstoff

Unit weight: 333.1137465 u; Number of atoms in the formula: 21.5

Info

Empirical formula:

Ca2B4O7(Cl0.75(OH)0.25)2·2H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

1.36

4.5

20.93

1.0079470

4.5357615

Boron

B

12.98

4

18.60

10.8117000

43.2468000

Oxygen

O

45.63

9.5

44.19

15.9994300

151.9945850

Chlorine

Cl

15.96

1.5

6.98

35.4532000

53.1798000

Calcium

Ca

24.06

2

9.30

40.0784000

80.1568000

Analysis wt%

B2O3 : 42.01, CaO : 32.43, Cl : 12.30, SiO2 : 0.51, H2O : 15.05 (Ref: Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva, 1904-1974 80)

Strunz 9th edition incl. updates

6.HA.40

6: Borate
H: Unklassifizierte Borate
A: Untergruppe nicht spezifiziert
40:Ekaterinit-Gruppe

Lapis Classification

V/H.12-040

V: NITRATE, CARBONATE UND BORATE
H: Gruppenborate
12: Planare und tetraedrische Gruppen [B3O5] 1- bis [B6O10] 2-

Classification by Hölzel

6.DC.150

6: Borates
D: Tetraborates
C: Phyllotetraborates
1: Structures unknown

Dana 8th edition

26.07.03.01

26: Hydrated Borates Containing Hydroxyl or Halogen
07: Hydrated Borates Containing Hydroxyl or Halogen

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

Optical Properties

Color

weiß-rosa

Streak color

weiß

max. Birefringence

0.003

Birefringence chart\! Ekaterinite title=Birefringence chart Ekaterinite

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

1.574

RI value γ / ε

1.577

Ri mean

1.575

2V angle

Uniaxial (-)

Optical Data Luminescence

Color LW-UV (365nm)

 

bläulich

Afterglow (Persistant Luminescence)

keine Daten

Crystallography

Crystal System

hexagonal

Class (H-M)

6

Space Group number

168

Space Group

P6

Cell parameters a (Å)

11.86

Cell parameters b (Å)

-

Cell parameters c (Å)

23.88

Cell parameters a/b or c/a

2.013

Cell parameters c/b

-

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

120°

Z

12

Volumne (ų)

2908.937

X-Ray Powder Diffraction

2.51(90),
2.31(100),
2.09(100),
2.047(100),
1.916(100),
1.281(100),
1.166(90)

XRD chart Ekaterinite

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

Physical Properties

Hardness (Mohs)

1

VHN (Hardness Vickers)

14 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

2.44 (gemessen)

2.282 ( ρ calc. Mineralienatlas )

Instability

+++ H2O

Preface

Author (Name, Year)

Malinko & Fitsev & Kuznetsova & Cherkasova, 1980

References

Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva 109 (1980), 469

Other languages

German

Ekaterinit

Spanish

Ekaterinita

French

Ekaterinite

English

Ekaterinite

Russian

Екатеринит

CNMNC (IMA)-Number

IMA 1979-067

CNMNC symbol

Symbol

Eka

Locations with GPS information