Mindat Logo

Françoisite-(Nd)

This page is currently not sponsored. Click here to sponsor this page.



Formula:
(Nd,Ce,Sm)(UO
 
2
)
 
3
(PO
 
4
)
 
2
O(OH) · 6H
 
2
O
System:MonoclinicColour:Yellow
Hardness:3
Isostructural with:Françoisite-(Ce)
This page provides mineralogical data about Françoisite-(Nd).

Classification of Françoisite-(Nd)

IMA status:Approved 1987
Strunz 8th edition ID:7/E.07-70
Nickel-Strunz 10th (pending) edition ID:8.EC.05

8 : PHOSPHATES, ARSENATES, VANADATES
E : Uranyl phosphates and arsenates
C : UO2:RO4 = 3:2
Dana 8th edition ID:42.4.14.1

42 : HYDRATED PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
4 : (AB)5(XO4)2Zq·xH2O
Hey's CIM Ref.:19.11.34

19 : Phosphates
11 : Phosphates of U
mindat.org URL:http://www.mindat.org/min-1594.html
Please feel free to link to this page.

Type Occurrence of Françoisite-(Nd)

Type Locality:Kamoto East Open cut, Kamoto, Kolwezi District, Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of Congo (Zaïre)

Physical Properties of Françoisite-(Nd)

Lustre:Vitreous
Colour:Yellow
Streak:White, yellow
Hardness (Mohs):3

Crystallography of Françoisite-(Nd)

Crystal System:Monoclinic

Optical Data of Françoisite-(Nd)

Type:Biaxial (-)
RI values: nα = 1.650 nβ = 1.740 nγ = 1.750
2V:Measured: 35° , Calculated: 34°
Maximum Birefringence:δ = 0.100

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:High
Dispersion:relatively strong

Chemical Properties of Françoisite-(Nd)

Formula:
(Nd,Ce,Sm)(UO
 
2
)
 
3
(PO
 
4
)
 
2
O(OH) · 6H
 
2
O
Simplified for copy/paste:(Nd,Ce,Sm)(UO2)3(PO4)2O(OH)·6H2O
Essential elements:H, Nd, O, P, U
All elements listed in formula:Ce, H, Nd, O, P, Sm, U

Relationship of Françoisite-(Nd) to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
8.EC.05Phuralumite
Al
 
2
(UO
 
2
)
 
3
(PO
 
4
)
 
3
(OH)
 
2
· 13H
 
2
O
8.EC.05Upalite
Al(UO
 
2
)
 
3
(PO
 
4
)
 
2
O(OH) · 7H
 
2
O
8.EC.05Françoisite-(Ce)
(Ce,Nd,Ca)(UO
 
2
)
 
3
(PO
 
4
)
 
2
O(OH) · 6H
 
2
O
8.EC.10Arsenuranylite
Ca(UO
 
2
)
 
4
(AsO
 
4
)
 
2
(OH)
 
4
· 6H
 
2
O
8.EC.10Dewindtite
H
 
2
Pb
 
3
(UO
 
2
)
 
2
(PO
 
4
)
 
4
O
 
4
· 12H
 
2
O
8.EC.10Kivuite
(Th,Ca,Pb)(UO
 
2
)
 
4
(HPO
 
4
)
 
2
(OH)
 
8
· 7H
 
2
O
8.EC.10Phosphuranylite
(H
 
3
O)
 
3
KCa(UO
 
2
)
 
7
(PO
 
4
)
 
4
O
 
4
· 8H
 
2
O
8.EC.10Yingjiangite
K
 
2
Ca(UO
 
2
)
 
7
(PO
 
4
)
 
4
(OH)
 
6
· 6H
 
2
O
8.EC.15Dumontite
Pb
 
2
(UO
 
2
)
 
3
(PO
 
4
)
 
2
(OH)
 
4
· 3H
 
2
O
8.EC.15Hügelite
Pb
 
2
(UO
 
2
)
 
3
(AsO
 
4
)
 
2
O
 
2
· 5H
 
2
O
8.EC.20Metavanmeersscheite
U
6+
 
(UO
 
2
)
 
3
(PO
 
4
)
 
2
(OH)
 
6
· 2H
 
2
O
8.EC.20Vanmeersscheite
U
6+
 
(UO
 
2
)
 
3
(PO
 
4
)
 
2
(OH)
 
6
· 4H
 
2
O
8.EC.20Arsenovanmeersscheite
U
4+
 
(UO
 
2
)
 
3
(AsO
 
4
)
 
2
(OH)
 
2
· 4H
 
2
O
8.EC.25Althupite
AlTh(UO
 
2
)
 
7
(PO
 
4
)
 
4
(OH)
 
5
O
 
2
· 15H
 
2
O
8.EC.30Mundite
Al(UO
 
2
)
 
3
(PO
 
4
)
 
2
(OH)
 
3
· 5.5H
 
2
O
8.EC.35Phurcalite
Ca
 
2
(UO
 
2
)
 
3
(PO
 
4
)
 
2
O
 
2
· 7H
 
2
O
8.EC.40Bergenite
Ca
 
2
Ba
 
4
(UO
 
2
)
 
9
(PO
 
4
)
 
6
O
 
6
· 16H
 
2
O
Related Minerals - Hey's Index Grouping:

- +
19.11.1Lermontovite
U(PO
 
4
)(OH) · H
 
2
O
19.11.2Metavanmeersscheite
U
6+
 
(UO
 
2
)
 
3
(PO
 
4
)
 
2
(OH)
 
6
· 2H
 
2
O
19.11.3Vanmeersscheite
U
6+
 
(UO
 
2
)
 
3
(PO
 
4
)
 
2
(OH)
 
6
· 4H
 
2
O
19.11.4Chernikovite
(H
 
3
O)
 
2
(UO
 
2
)
 
2
(PO
 
4
)
 
2
· 6H
 
2
O
19.11.5Vyacheslavite
U(PO
 
4
)(OH) · nH
 
2
O
19.11.6Metanatroautunite
Na(UO
 
2
)(PO
 
4
)(H
 
2
O)
 
3
19.11.7Yingjiangite
K
 
2
Ca(UO
 
2
)
 
7
(PO
 
4
)
 
4
(OH)
 
6
· 6H
 
2
O
19.11.8Meta-ankoleite
K
 
2
(UO
 
2
)
 
2
(PO
 
4
)
 
2
· 6H
 
2
O
19.11.9Uramphite
(NH
 
4
)
 
2
(UO
 
2
)
 
2
(PO
 
4
)
 
2
· 6H
 
2
O
19.11.10Torbernite
Cu(UO
 
2
)
 
2
(PO
 
4
)
 
2
· 12H
 
2
O
19.11.11Metatorbernite
Cu(UO
 
2
)
 
2
(PO
 
4
)
 
2
· 8H
 
2
O
19.11.12Saléeite
Mg(UO
 
2
)
 
2
(PO
 
4
)
 
2
· 10H
 
2
O
19.11.13Ningyoite
CaU(PO
 
4
)
 
2
· 1-2H
 
2
O
19.11.14Meta-autunite
Ca(UO
 
2
)
 
2
(PO
 
4
)
 
2
· 6-8H
 
2
O
19.11.15Autunite
Ca(UO
 
2
)
 
2
(PO
 
4
)
 
2
· 11H
 
2
O
19.11.16Pseudo-autunite
(H
 
3
O)
 
4
Ca
 
2
(UO
 
2
)
 
2
(PO
 
4
)
 
4
· 5H
 
2
O
19.11.17Phurcalite
Ca
 
2
(UO
 
2
)
 
3
(PO
 
4
)
 
2
O
 
2
· 7H
 
2
O
19.11.18Phosphuranylite
(H
 
3
O)
 
3
KCa(UO
 
2
)
 
7
(PO
 
4
)
 
4
O
 
4
· 8H
 
2
O
19.11.19Ulrichite
CaCu(UO
 
2
)(PO
 
4
)
 
2
· 4H
 
2
O
19.11.20Bergenite
Ca
 
2
Ba
 
4
(UO
 
2
)
 
9
(PO
 
4
)
 
6
O
 
6
· 16H
 
2
O
19.11.21Metauranocircite
Ba(UO
 
2
)
 
2
(PO
 
4
)
 
2
· 7H
 
2
O
19.11.22Uranocircite
Ba(UO
 
2
)
 
2
(PO
 
4
)
 
2
· 10H
 
2
O
19.11.23Ranunculite
HAl(UO
 
2
)(PO
 
4
)(OH)
 
3
· 4H
 
2
O
19.11.24Triangulite
Al
 
3
(UO
 
2
)
 
4
(PO
 
4
)
 
4
(OH)
 
5
· 5H
 
2
O
19.11.25Mundite
Al(UO
 
2
)
 
3
(PO
 
4
)
 
2
(OH)
 
3
· 5.5H
 
2
O
19.11.26Upalite
Al(UO
 
2
)
 
3
(PO
 
4
)
 
2
O(OH) · 7H
 
2
O
19.11.27Furongite
Al
 
13
(UO
 
2
)
 
7
(PO
 
4
)
 
13
(OH)
 
14
· 58H
 
2
O
19.11.28Threadgoldite
Al(UO
 
2
)
 
2
(PO
 
4
)
 
2
(OH) · 8H
 
2
O
19.11.29Phuralumite
Al
 
2
(UO
 
2
)
 
3
(PO
 
4
)
 
3
(OH)
 
2
· 13H
 
2
O
19.11.30Moreauite
Al
 
3
(UO
 
2
)(PO
 
4
)
 
3
(OH)
 
2
· 13H
 
2
O
19.11.31Sabugalite
HAl(UO
 
2
)
 
4
(PO
 
4
)
 
4
· 16H
 
2
O
19.11.32Uranospathite
(Al,☐)(UO
 
2
)
 
2
(PO
 
4
)
 
2
F · 20(H
 
2
O,F)
19.11.33Althupite
AlTh(UO
 
2
)
 
7
(PO
 
4
)
 
4
(OH)
 
5
O
 
2
· 15H
 
2
O
19.11.35Kivuite
(Th,Ca,Pb)(UO
 
2
)
 
4
(HPO
 
4
)
 
2
(OH)
 
8
· 7H
 
2
O
19.11.36Parsonsite
Pb
 
2
(UO
 
2
)(PO
 
4
)
 
2
· 2H
 
2
O
19.11.37Dewindtite
H
 
2
Pb
 
3
(UO
 
2
)
 
2
(PO
 
4
)
 
4
O
 
4
· 12H
 
2
O
19.11.38Dumontite
Pb
 
2
(UO
 
2
)
 
3
(PO
 
4
)
 
2
(OH)
 
4
· 3H
 
2
O
19.11.39Przhevalskite
Pb
 
2
(UO
 
2
)
 
3
(PO
 
4
)
 
2
(OH)
 
4
· 3H
 
2
O
19.11.40Lehnerite
Mn
2+
 
(UO
 
2
)
 
2
(PO
 
4
)
 
2
· 8H
 
2
O
19.11.41Bassetite
Fe
2+
 
(UO
 
2
)
 
2
(PO
 
4
)
 
2
· 8H
 
2
O
19.11.42Vochtenite
(Fe
2+
 
,Mg)Fe
3+
 
(UO
 
2
)
 
4
(PO
 
4
)
 
4
(OH) · 12-13H
 
2
O

Other Names for Françoisite-(Nd)

Synonyms:
IMA1987-041
Other Languages:
Russian:Франкоисит-(Nd)

Other Information

Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Françoisite-(Nd)

Reference List:

- +
American Mineralogist: 75: 241.

Piret, P., Deliens, M., and Piret-Meunier, J. (1988) La françoisite-(Nd), nouveau phosphate d'uranyle et de terres rares; propriétés et structure cristalline. Bulletin de Mineralogie: 111: 443-449.

Burns, P.C. (2005) U 6+ minerals and inorganic compounds: insights into an expanded structural hierarchy of crystal structures. Canadian Mineralogist: 43: 1839-1894.

Internet Links for Françoisite-(Nd)

Search Engines:
  • Look for Françoisite-(Nd) on Google
  • Look for Françoisite-(Nd) images on Google
  • External Links:
  • Look for Françoisite-(Nd) on Webmineral
  • Look for Françoisite-(Nd) on Athena Mineralogy
  • Look for Françoisite-(Nd) on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Françoisite-(Nd) details from Handbook of Mineralogy (PDF)
  • Mineral Dealers:
  • DAKOTA MATRIX offers Cabinet and Rare Species from Worldwide Localities.
  • Buy RARE Minerals from Rocks of Africa
  • High-end worldwide specimens & outstanding customer service
  • Fine Minerals from Weinrich Minerals, Inc.
  • Buy from McDougall Minerals
  • rare and unusual minerals mainly crystallized
  • SpiriferMinerals.com - high quality low prices
  • Fabre Minerals - search for Françoisite-(Nd) specimens
  • Françoisite-(Nd) specimens for sale - minfind.com
  • Lapis Mineral Magazin
  • Fine and rare minerals from mintreasure.com
  • Top quality minerals from Kristalle of California
  • Jobs:
  • Mining & Geology Jobs
  • Localities for Françoisite-(Nd)

    The map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    Australia
     
    • South Australia
      • Flinders Ranges
        • North Flinders Ranges
          • Arkaroola Region (Arkaroola Station)
            • Mt Painter area
    2003, Brugger, J., Ansermet, S. & Pring, A. ' Uranium minerals from Mt Painter, Northern Flinders ranges, South Australia' Australian Journal of Mineralogy, vol. 9, n°1, pp 15-31
    Democratic Republic of Congo (Zaïre)
     
    • Katanga (Shaba)
      • Katanga Copper Crescent
        • Kolwezi District
          • Kamoto
    [Mandarino, 1997]; Eur. J. Mineral., 1990, 2
    Gabon
     
    • Haut-Ogooué Province
      • Franceville
    MinMag 60:665; Jensen, K.A., Palenik, C.S., and Ewing, R.C. (2002) U 6+ phases in the weathering zone of the Bangombe U-deposit: observed and predicted mineralogy. Radiochim. Acta: 90: 761-769.; Janusz Janeczek (1999) Mineralogy and geochemistry of natural fission reactors in Gabon. Reviews in Mineralogy and Geochemistry, MSA, v. 38, p. 321-392
    Italy
     
    • Trentino-Alto Adige
      • Trento Province
        • Condino
    Campostrini, I., Demartin, F., & Gramaccioli, C. M. (2006). Rio Giulis. Minerali secondari del giacimento uranifero presso Condino, Trento. Rivista Mineralogica Italiana, 30(3), 152-165.
    Switzerland
     
    • Wallis (Valais)
      • Le Trient Valley
        • Les Marécottes
    In Philippe Roth's collection. XRD and SEM/EDX determination by N. Meisser (MGL Lausanne), February 2009.
    Mineral and/or Locality  
    Search Google  
    Copyright © Jolyon Ralph and Ida Chau 1993-2014. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of thousands of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
    Current server date and time: February 13, 2014 20:05:43
    Mineral and Locality Search
    Mineral:
    and/or Locality:
    Options
    Fade toolbar when not in focusFix toolbar to bottom of page
    Hide Social Media Links
    Slideshow frame delay seconds