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Renardite

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Formula:
Pb(UO2)4(PO4)2(OH)4•H2O
System:
Orthorhombic
Colour:
Yellow
Name:
After Alphonse. F. Renard (1842-1903), University of Ghent, Belgium.
Described as a new species from Shinkolobwe, Democratic Republic of Congo by Schoep (1928). Later Deliens et al. (1990) argued that it was a mixture of dewindite and phosphuranilite. Sejkora et al. (2003) investigated specimens from Rýžoviště, Haarachov, Böhmen, Czech Republic and concluded it to be a valid species. However, further investigations are needed. Currently (2015), the species is listed by IMA as questionable, with formula different from that of dewindtite.

The crystals of renardite described from Shinkolobwe resembles dewindite ( Schoep 1928).

Classification of Renardite

Questionable/Doubtful
Explanation of status:
Formerly regarded as dewindtite.
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Physical Properties of Renardite

Greasy
Diaphaneity (Transparency):
Translucent
Colour:
Yellow
Hardness Data:
Could not be measured
Cleavage:
Perfect
Parallel to (100)
Density:
4.0 g/cm3 (Measured)    
Comment:
A little more than 4.0

Crystallography of Renardite

Crystal System:
Orthorhombic
Morphology:
Platy, rectangular prismatic crystals parallel to (100), with a rhombic appearance.
The largest crystal described by Schoep (1928) measured 1.0 x 0.35 x 0.07 mm.

Chemical Properties of Renardite

Formula:
Pb(UO2)4(PO4)2(OH)4•H2O
Essential elements:
All elements listed in formula:

Other Information

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

References for Renardite

Reference List:
Schoep (1928): La renardite, nouveau mineral uranifére. Bulletin de la Société française de Minéralogie. 51, 247-252

Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II. John Wiley and Sons, Inc., New York, 7th edition, revised and enlarged, 1124 pp.: 928.

Deliens, M., Piret, P. & Van der Meersche, E. (1990): Les minéraux secondaires d'uranium du Zaïre. Deuxième complément, 39p. Brussel: Institut royal des Sciences naturelles de Belgique.

Sejkora, J, Čejka, J, Pauliš, P. (2003): Rare lead uranyl phospate- dewindite from the uranium occurrence Rýžoviště near Harrochov (Krkonoše Mts.), Bohemia, Czech Republic. Bulletin mineralogicko-petrologického oddelení Národnícho muszea v Praze. 11, 177-183.

Van der Meersche, E., Paepe, P. & Stoops, G. (2010): Minerals with Belgian Roots from hopeite (1824) to tazieffite (2009). Gent: Academia Press, 231 p. [p. 179-180 on Renardite & Alphonse Renard]

Internet Links for Renardite

Localities for Renardite

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 for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? 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.
Democratic Republic of Congo (Zaïre)
 
  • Katanga (Shaba)
    • Katanga Copper Crescent
      • Shinkolobwe
Schoep (1928): La renardite, nouveau mineral uranifére. Bulletin de la Société française de Minéralogie. 51, 247-252
Mineral and/or Locality  
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