Grants mineral belt

Fitch, D C. 1979. Exploration for uranium deposits in grants mineral belt. New Mexico. AAPG Bulletin, 63, 688. 

New Mexico McKinley and Cibola counties Grants Mineral Belt Ore deposits and mining wastes Thomson, Longmire and Brookins (1986)... 

Kaufmann RF, Eadie GG, Russell CR. 1976. Effects of uranium mining and milling on ground water in the Grants Mineral Belt, New Mexico. Ground Water 14 296-308. 

Table I. Concentrations of Selected Constituents of Acid-Leach Uranium Mill Tailings Pond Raffmates, Grants Mineral Belt,...

Results of batch leach tests performed on tailings from the Grants Mineral Belt, New Mexico are summarized in Tables IV and V. These results represent the average of two analyses on the acid leach tailings samples. Table IV contains the elemental concentrations of the sand and silt and clay-sized fractions, as well as the soluble concentration of each element found when 100 g of material is leached with 250 mL of sodium hexametaphosphate solution. The right-most column presents the ratio of the elemental concentration associated with the silt and clay-sized fraction to that of the sand-sized fraction, and it is presented as an enrichment factor. The high enrichment factors for As, Mo, Cr, Se, and V may be due to the fact that these elements are adsorbed onto jarosite, montmorillonite, and ferric oxyhydroxides (9-141. Speciation... 

Figure 1. Activity diagram of jarosite-alunite-potassium feldspar-gibbsite-goethite system at 1 bar and 298 K. Modified from Bladh (18). Tailings pore water from Grants Mineral Belt, New Mexico and Maybell, Colorado are denoted by O and, respectively. Median ground water composition (19) is represented by. ...

Table V. Distribution of the Total Mass of Each Element from a 100 g Sample of Acid Leach Uranium Tailings, Grants Mineral Belt, New Mexico ...

The term stack deposit was first used to describe uranium ore deposits associated with peneconcordant deposits in the Grants Mineral Belt, New Mexico. Stack deposits are also called tecto-lithologic , redistributed or post-fault ore because they represent uranium that was mobilized from earlier peneconcordant or roll-type occurrences and redeposited in near-vertical bodies. The geometry of stack deposits commonly is controlled by faults or fractures that post-date the formation of the other uranium deposits. Stack deposits generally have greater thicknesses than the associated peneconcordant or roll-type deposits, but their shape is irregular. 

The best-known deposits are those in the Precambrian Franceville Basin, Gabon, and in the Jurassic of the Grants Mineral Belt, U.S.A. Other occurrences are in the Miocene-Pliocene of Pakistan, the Miocene of Japan, the Permian of Europe, the Karoo Formation of South Africa and the Proterozoic of Canada. 

Non-metamorphic equivalents of this Th-free mineralization may be sought in some rare limestone-hosted U-occurences, such as the Jurassic Todilto lacustrine formation in the Grant Uranium Belt (Rawson Richard 1980), the Cretaceous Toolebuc marine formation in Eromanga Basin (Ramsden 1982), the Mesoproterozoic Vempale marine formation in Cuddapah Basin (Sinha et al. 1989), and the Cretaceous Probeer marine formation in the Huab deposit (Hartleb 1988). 

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