Where it forms, where it's found
12recorded occurrences
Radioactivity
Physical
- Transparency
- Translucent
- Colour
- Yellow
- Cleavage
- Perfect
Parallel to (100)
- Density
- 4.0 g/cm³
Optical
- Refractive index
- 1.715 – 1.739
- Surface relief
- High
- Principal indices
- nα 1.715 · nβ 1.736 · nγ 1.739
- Pleochroism
- Weak
X = colorless; Y = yellow; Z = yellow
Δ = 0Δmax
PPLpleochroism per grain
XPLindependent extinctions · rotate the stage
PPLpleochroism only · colour blends on rotation
XPLinterference colour · extinct every 90°
Retardation240 nm
Order1st order
XPL colour
Crystallography
- Cell parameters
- a = 16.01 Å · b = 17.5 Å · c = 13.7 Å
- Ratio a:b:c
- 1 : 1.093 : 0.856
- Z
- 6
- 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.
- Comment
Point group : n.d.; Space Group n.d.
Chemical composition
Synonyms
- Renardiet
In other languages
- German
- Renardit
- Italian
- Renardite
Classification
Strunz
10th ed.8.EC.10
- 8Phosphates, Arsenates, VanadatesClass
- 8.EUranyl phosphates and arsenatesDivision
- 8.ECUO2:RO4 = 3:2Group
- 8.EC.10RenarditeSpecies
Literature, links & citation
Citations
- —Van Der Meersche, Eddy, De Paepe, Paul, Stoops, Georges (n.d.) Minerals with Belgian Roots - from hopeite (1824) to tazieffite (2009) Academia Press, Ghent.
- 1928Schoep, A. (1928) La renardite, nouveau minéral uranifère. Bulletin de la Société française de Minéralogie: 51(3-4): 247-252 (in French). https://www.persee.fr/doc/bulmi_0366-3248_1928_num_51_3_4045
- 1929Foshag, W.F. (1929) New mineral names. American Mineralogist: 14: 244-244.
- 1951Palache, Charles; Berman, Harry; Frondel, Clifford (1951) The System of Mineralogy (7th ed.) Vol. 2 - Halides, Nitrates, Borates, Carbonates, Sulfates, Phosphates, Arsenates, Tungstates, Molybdates, Etc. John Wiley and Sons.
- 1954Frondel, Clifford, Cuttitta, Frank (1954) Studies of uranium minerals (XIV): Renardite. American Mineralogist, 39 (5-6) 448-451
Cite this entry
@misc{mineral2026,
author = {Mineral Index editorial board},
title = {Renardite — Mineral Index},
year = {2026},
url = {https://mineralindex.org/minerals/renardite-5219},
note = {Accessed 2026-05-11}
}