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Five sets of "close" samples (narrow and contiguous samples across a lithologic unit) from beds of high phosphate content of the Phosphoria formation in Idaho, Utah, and Wyoming were analyzed chemically for F and C02. The size of phosphate pellets was measured in thin sections of two sets of close samples. Frequency histograms and cumulative curves were plotted from these size measurements, but when compared with uranium concentration for each sample, no significant correlation between size and uranium concentration could be discovered. Analyses of these samples for P2P^t CaO, organic matter, and equivalent uranium were presented in a previous report. In two sets of samples a good correlation was found between equivalent uranium and each of the other components. The samples in these two sets have a uranium content that is relatively high (for the Phosphoria formation), and they show considerable variation in P® content. GEOLOGY ATJD MINERALOGY In the interest of economy, this report has been reproduced direct from copy as submitted to the Technical Information Service. Since nontechnical and nonessential prefatory material has been deleted, the first page of the report is page 5. AEC, Oak Ridge, Tenn.-W30816 FURTHER STUDIES OF THE DISTRIBUTION OF URANIUM IN RICH PHOSPHATE BEDS OF THE PHOSPHORIA FORMATION*

From abstract: "Five sets of 'close' samples were analyzed radiometrically for uranium, and chemically for P₂O₅, CaO, organic matter, and loss on ignition. A Rosiwal analysis was made of thin sections of one set of samples."