Bull. Minéral. (1987), UO, 145-156
Oxidation-reduction processes in the genesis of the uranium-vanadium tabular deposits of the Cottonwood Wash mining area (Utah, USA) : evidence from petrological study and organic matter analysis
by Jean-Dominique MEUNIER*, Patrick LANDAIS*, Marc MONTHIOUX** and Maurice PAG EL*
* CREGU et Groupement Scientifique C . N . R . S . -CREGU ,
B.P. 23, 54501 Vandœuvre-Ies-Nancy Cedex, France.
** Institut Français du Pétrole -Division 7020,
B.P. 311, 92506 Rueil Malmaison Cedex, France.
Les phénomènes d' oxydo-réduction dans la genèse des dépôts tabulaires urano-vanadifères de Cottonwood Wash (Utah, Etats-Unis) : conséquence de l' étude pétrologique et de l'analyse de la matière organique.
Introduction
Colorado Plateau Jurassic sandstones have provided large amounts of uranium and vana¬ dium ores since the 1940s. The Salt-Wash
Member of the Morrison Formation hosts many of the tabular-type U-V ore deposits. Numerous genetic theories have been proposed for the ta¬ bular deposits, but their origin is still controver¬ sial. Rackley (1976) concluded that roll-type
@ Société française de Minéralogie et de Cristallographie, Paris, 1987.
