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Françoisite-(Nd)

Pictures (4 Images total)

Françoisit-(Nd)
Views (File:
1282933819
): 1100
Françoisit-(Nd)
Bildbreite: 4 mm, Fundort: Kamoto Ost, Kamoto, Shaba, Kongo
Copyright: Richard De Nul; Contribution: thdun5
Location: Demokratische Republik Kongo/Katanga (Shaba), Provinz/Lualaba, Distrikt/Kolwezi, Revier/Kamoto/Kamoto Ost
Mineral: Françoisite-(Nd)
Image: 1282933819
Rating: 5 (votes: 1)
License: Usage for Mineralienatlas project only
Françoisit-(Nd)

Bildbreite: 4 mm, Fundort: Kamoto Ost, Kamoto, Shaba, Kongo
Copyright: Richard De Nul
Contribution: thdun5 2010-08-27
Locality: Kamoto Ost / Kamoto / Kolwezi, Revier / Lualaba, Distrikt / Katanga (Shaba), Provinz / Demokratische Republik Kongo
Francoisit-(Nd) xx
Views (File:
1562406335
): 329
Francoisit-(Nd) xx
Kamoto/Shaba,Kongo; Bildbreite 5,80 mm
Copyright: Haubi; Contribution: Haubi
Collection: Haubi
Location: Demokratische Republik Kongo/Katanga (Shaba), Provinz/Lualaba, Distrikt/Kolwezi, Revier/Kamoto
Mineral: Françoisite-(Nd)
Image: 1562406335
License: Usage for Mineralienatlas project only
Francoisit-(Nd) xx

Kamoto/Shaba,Kongo; Bildbreite 5,80 mm
Collection: Haubi
Copyright: Haubi
Contribution: Haubi 2019-07-06
Locality: Kamoto / Kolwezi, Revier / Lualaba, Distrikt / Katanga (Shaba), Provinz / Demokratische Republik Kongo
Francoisit-(Nd)
Views (File:
1617573213
): 213
Francoisit-(Nd)
Francoisit-(Nd) (gelbbraun) neben Meta-Autunit xx (hellgrün); Schacht 207, Niederschlema, Sachsen, Erzgebirge, BRD; Bildbreite: 5,5 mm
Copyright: chribiedav; Contribution: chribiedav
Collection: chribiedav
Location: Deutschland/Sachsen/Erzgebirgskreis/Lagerstätte Schlema-Alberoda/Schacht 207
Mineral: Françoisite-(Nd)
Image: 1617573213
License: Usage for Mineralienatlas project only
Francoisit-(Nd)

Francoisit-(Nd) (gelbbraun) neben Meta-Autunit xx (hellgrün); Schacht 207, Niederschlema, Sachsen, Erzgebirge, BRD; Bildbreite: 5,5 mm
Collection: chribiedav
Copyright: chribiedav
Contribution: chribiedav 2021-04-04
Locality: Schacht 207 / Lagerstätte Schlema-Alberoda / Erzgebirgskreis / Sachsen / Deutschland
Françoisit-(Nd)
Views (File:
1282933847
): 825
Françoisit-(Nd)
Bildbreite: 4 mm, Fundort: Kamoto Ost, Kamoto, Shaba, Kongo
Copyright: Richard De Nul; Contribution: thdun5
Location: Demokratische Republik Kongo/Katanga (Shaba), Provinz/Lualaba, Distrikt/Kolwezi, Revier/Kamoto/Kamoto Ost
Mineral: Françoisite-(Nd)
Image: 1282933847
Rating: 2 (votes: 1)
License: Usage for Mineralienatlas project only
Françoisit-(Nd)

Bildbreite: 4 mm, Fundort: Kamoto Ost, Kamoto, Shaba, Kongo
Copyright: Richard De Nul
Contribution: thdun5 2010-08-27
Locality: Kamoto Ost / Kamoto / Kolwezi, Revier / Lualaba, Distrikt / Katanga (Shaba), Provinz / Demokratische Republik Kongo

Collectors Summary

Color gelb
Streak color gelblichweiß
Hardness (Mohs) 3
Solubility +++ Säuren
Crystal System monoklin, P21/c

Chemism

Chemical formula

(Nd,Y,Sm,Ce)(UO2)3(PO4)2O(OH)·6H2O

Chemical composition

Cerium, Neodymium, Samarium, Yttrium, Phosphor, Sauerstoff, Uran, Wasserstoff

Unit weight: 1269.172543 u; Number of atoms in the formula: 41

Info

Empirical formula:

(Nd0.55Y0.3Sm0.1Ce0.05)(UO2)3(PO4)2O(OH)·6H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Hydrogen

H

1.03

13

31.71

1.0079470

13.1033110
Oxygen

O

27.73

22

53.66

15.9994300

351.9874600
Phosphorus

P

4.88

2

4.88

30.9737612

61.9475224
Yttrium

Y

2.10

0.3

0.73

88.9058520

26.6717556
Cerium

Ce

0.55

0.05

0.12

140.1161000

7.0058050
Neodymium

Nd

6.25

0.55

1.34

144.2430000

79.3336500
Samarium

Sm

1.18

0.1

0.24

150.3630000

15.0363000
Uranium

U

56.26

3

7.32

238.0289130

714.0867390

Analysis wt%

Ø UO3 : 67.30, Y2O3 : 1.53, La2O3 : 0.71, Ce2O3 : 1.00, Pr2O3 : 0.92, Nd2O3 : 4.60, Sm2O3 : 1.60, Dy2O3 : 0.79, P2O5 : 10.15, H2O : 8.53, Ln2O3 : 11.15 (Ref: Bulletin de Mineralogie 88)

Strunz 9th edition incl. updates

8.EC.05

8: Phosphate, Arsenate, Vanadate
E: Uranylphosphate und Arsenate
C: UO2:RO4 = 3:2
05:Upalit-Gruppe

Lapis Classification

VII/E.07-070

VII: PHOSPHATE, ARSENATE UND VANADATE ("Phosphate" des Registers immer einschließlich isotyper Arsenate und Vanadate!)
E: Uranyl-Phosphate/Arsenate und Uranyl-Vanadate mit [UO2] 2+- [PO4]/[AsO4] 3- und [UO2] 2+-[V2O8] 6-, sowie isotype Vanadate (Sincosit-Reihe)

Classification by Hölzel

8.EC.580

8: PHOSPHATES ARSENATES VANADATES
E: Uranyl (Phospates-Arsenates-Vanadates)
C: Monoclinic Uranyl (Phosphates-Arsenates)
5: C large, V=2,3 Dumontite-Group

Dana 8th edition

42.04.14.01

42: Hydrated Phosphates, etc., Containing Hydroxyl or Halogen
04: Hydrated Phosphates, etc., Containing Hydroxyl or Halogen where (AB)5 (XO4)2 Zq · x(H2O)
14: Francoisite Group

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

Optical Properties

Color

gelb

Streak color

gelblichweiß

max. Birefringence

0.10
Birefringence chart\! Françoisite-(Nd) title=Birefringence chart Françoisite-(Nd)

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

1.65

RI value β

1.74

RI value γ / ε

1.75

Ri mean

1.713

2V angle

Biaxial (-) 35°

Crystallography

Crystal System

monoklin

Class (H-M)

2/m

Space Group number

14

Space Group

P21/c

Cell parameters a (Å)

9.298

Cell parameters b (Å)

15.605

Cell parameters c (Å)

13.668

Cell parameters a/b or c/a

0.596

Cell parameters c/b

0.876

Cell parameters α

90°

Cell parameters β

114.77

Cell parameters γ

90°

Z

4

Volume (ų)

1800.705

X-Ray Powder Diffraction

7.79(100),
5.76(50),
4.44(40),
4.33(40),
3.88(50),
3.13(50),
2.874(40),
2.840(40)
XRD chart Françoisite-(Nd)

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

Physical Properties

Hardness (Mohs)

3

VHN (Hardness Vickers)

83 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

4.63 (berechnet)

4.681 ( ρ calc. Mineralienatlas )

Instability

+++ Säuren

(Co-)Type locality

(Co-)Type locality

Demokratische Republik Kongo/Katanga (Shaba), Provinz/Lualaba, Distrikt/Kolwezi, Revier/Kamoto/Kamoto Ost

Preface

Author (Name, Year)

Piret & Deliens & Piret-Meunier, 1988

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 Minéralogie 111 (1988), 443

Other languages

German

Françoisit-(Nd)

Spanish

Françoisita-(Nd)

French

Françoisite-(Nd)

English

Françoisite-(Nd)

Russian

Франкоисит-(Nd)

CNMNC symbol

Symbol

Frç-Nd

Locations with GPS information

IDs

GUSID (Global unique identifier short form) RApevDmIMU2CeCNLpOBkJQ
GUID (Global unique identifier) BC5E0A44-8839-4D31-8278-234BA4E06425
Database ID 1277