General Information:
Chemical Formula:HAl(UO2)(PO4)(OH)3·4(H2O)
Composition:(Molecular Weight = 516.07 gm)Uranium 46.12 %
U Aluminum 5.23 %
AlPhosphorus 6.00 %
P Hydrogen 2.34 %
H Oxygen 40.30 %
O Empirical Formula: HAl(UO2)(PO4)(OH)3·4(H2O)
Environment:In U-rich portions of a pegmatite with other Al-U phosphates.
IMA Status:Approved IMA 1978
Locality:Kobokobo, Kivu, Zaire.
Name Origin:Named for the color "ranunculus", buttercup.
Physical Properties: Cleavage:[001] Perfect, [100] Perfect
Color:golden yellow or canary yellow.
Density:3.4
Habits:Nodular - Tuberose forms having irregular protuberances over the surface., Platy - Sheet forms (e.g. micas)., Botryoidal - "Grape-like" rounded forms (e.g.. malachite).
Hardness:3 - Calcite
Luminescence:Non-fluorescent.
Streak:light yellow
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