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Roubaultite

Pictures (2 Images total)

Roubaultite
Views (File:
1517585062
): 388
Roubaultite
Roubaultite, Billietite; KOV Open cut, Kamoto, Kolwezi District, Katanga, Democratic Republic of the Congo; Field of View: 1 mm; Crystal group of roubaultite associated with billietite. Specimen has been analyzed. Obtained from Gilbert Gauthier.
Copyright: Brent Thorne; Contribution: Stefan
Collection: Brent Thorne
Location: Demokratische Republik Kongo/Katanga (Shaba), Provinz/Lualaba, Distrikt/Kolwezi, Revier/Kamoto/Kamoto-Oliveira-Virgule (K.O.V.)
Mineral: Roubaultite
Image: 1517585062
License: Usage for Mineralienatlas project only
Roubaultite

Roubaultite, Billietite; KOV Open cut, Kamoto, Kolwezi District, Katanga, Democratic Republic of the Congo; Field of View: 1 mm; Crystal group of roubaultite associated with billietite. Specimen ha...
Collection: Brent Thorne
Copyright: Brent Thorne
Contribution: Stefan 2018-02-02
Locality: Kamoto-Oliveira-Virgule (K.O.V.) / Kamoto / Kolwezi, Revier / Lualaba, Distrikt / Katanga (Shaba), Provinz / Demokratische Republik Kongo
Roubaultit
Views (File:
1517823177
): 370
Roubaultit
Roubaultit aus Shinkolobwe, Shaba, Zaire; Stufengrößegröße : 4,5x5cm; Ex-Sammlung Bültemann
Copyright: Ferdl; Contribution: Rockhounder
Collection: Ferdl
Location: Demokratische Republik Kongo/Katanga (Shaba), Provinz/Ober-Katanga (Haut-Katanga), Distrikt/Shinkolobwe (Kasolo)
Mineral: Roubaultite
Image: 1517823177
License: Usage for Mineralienatlas project only
Roubaultit

Roubaultit aus Shinkolobwe, Shaba, Zaire; Stufengrößegröße : 4,5x5cm; Ex-Sammlung Bültemann
Collection: Ferdl
Copyright: Ferdl
Contribution: Rockhounder 2018-02-05
Locality: Shinkolobwe (Kasolo) / Ober-Katanga (Haut-Katanga), Distrikt / Katanga (Shaba), Provinz / Demokratische Republik Kongo

Collectors Summary

Color grasgrün, abfelgrün
Streak color grün
Hardness (Mohs) 3
Solubility +++ Säuren
Crystal System triklin, P1

Chemism

Chemical formula

Cu2(UO2)3(CO3)2O2(OH)2·4H2O

Chemical composition

Kupfer, Kohlenstoff, Sauerstoff, Uran, Wasserstoff

Unit weight: 1195.268969 u; Number of atoms in the formula: 37

Info

Empirical formula:

Cu2(UO2)3(CO3)2O2(OH)2·4H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Hydrogen

H

0.84

10

27.03

1.0079470

10.0794700
Carbon

C

2.01

2

5.41

12.0107800

24.0215600
Oxygen

O

26.77

20

54.05

15.9994300

319.9886000
Copper

Cu

10.63

2

5.41

63.5463000

127.0926000
Uranium

U

59.74

3

8.11

238.0289130

714.0867390

Analysis wt%

CuO : 13.24, UO3 : 71.93, CO2 : 7.33, H2O : 7.50 (Ref: berechnet)

Strunz 9th edition incl. updates

5.EA.25

5: Carbonate (Carbonate, Nitrate)
E: Uranylcarbonate
A: UO2:CO3 = 1:1
25:Roubaultit-Gruppe

Lapis Classification

V/F.03-010

V: NITRATE, CARBONATE UND BORATE
F: Uranylcarbonate [UO2] 2+ – [CO3] 2-

Classification by Hölzel

5.ED.150

5: CARBONATES NITRATES ARSENITES SULFITES SELENITES TELLURITES IODATES
E: Uranyl-Carbonates
D: Uranyl-Carbonates (+Anions +Water)

Dana 8th edition

16b.07.13.01

16b: Carbonates - Hydroxyl or Halogen
07: Carbonates - Hydroxyl or Halogen

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

Optical Properties

Color

grasgrün, abfelgrün

Streak color

grün

max. Birefringence

0.13
Birefringence chart\! Roubaultite title=Birefringence chart Roubaultite

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

1.700

RI value β

1.800

RI value γ / ε

1.83

Ri mean

1.777

2V angle

Biaxial (-) 55°

Crystallography

Crystal System

triklin

Class (H-M)

1

Space Group number

2

Space Group

P1

Cell parameters a (Å)

7.767

Cell parameters b (Å)

6.924

Cell parameters c (Å)

7.850

Cell parameters a/b or c/a

1.122

Cell parameters c/b

1.134

Cell parameters α

92.17

Cell parameters β

90.88

Cell parameters γ

93.48

Z

1

Volume (ų)

421.016

X-Ray Powder Diffraction

7.72(90),
6.86(80),
5.54(100),
4.39(50),
3.50(70),
3.447(80),
3.200(80),
3.155(80)
XRD chart Roubaultite

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

VHN (Hardness Vickers)

83 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

5.02

4.714 ( ρ calc. Mineralienatlas )

Instability

+++ Säuren

(Co-)Type locality

(Co-)Type locality

Demokratische Republik Kongo/Katanga (Shaba), Provinz/Ober-Katanga (Haut-Katanga), Distrikt/Shinkolobwe (Kasolo)/Shinkolobwe Mine (Kasolo Mine)

Preface

Author (Name, Year)

Cesbron & Pierrot & Verbeek, 1970

Safety Instructions

Industrial chemicals are often present in powder form and therefore often contain much higher dangers than natural, crystalline substances. These hazard statements refer to the classification of industrially used chemical compounds that may also occur in this natural mineral. The hazard classification makes no claim to completeness.




Safety classes: Ionizing radiation: Radioaktiv

References

Bulletin de la Société Française Minéralogie et de Cristallographie 93 (1970), 550

Other languages

German

Roubaultit

Spanish

Roubaultita

French

Roubaultite

English

Roubaultite

Russian

Рубоит

CNMNC (IMA)-Number

IMA 1970-030

CNMNC symbol

Symbol

Rbl

Locations with GPS information

IDs

GUSID (Global unique identifier short form) yUZbAc5BXEKqRJrT5WCRHQ
GUID (Global unique identifier) 015B46C9-41CE-425C-AA44-9AD3E560911D
Database ID 3323