Photogeologic map of the Elk Ridge-5 quadrangle, San Juan County, Utah

Abstract: San Miguel bench includes about 4 square miles in the southern part of T. 48 N., R. 17 W., New Mexico principal meridian, Montrose County, Colorado. Production of carnotite ore from the area has been about 15, 000 short tons having an estimated average graderof 0. 31 percent U3O8,and 1. 6 percent V2 05 Nearly all of the carnotite deposits occur in a single-continuous sandstone bed near the top of the Salt Wash member of the Jurassic Morrison formation. These deposits consist chiefly of sandstone impregnated with uranium- and vanadium-bearing minerals. They are irregular tabular-shaped masses ranging in size from a few short tons to 30, 000 short tons or more of minable carnotite ore. During the period November 27, 1951, to April 17, 1953, the U. S. Geological Survey drilled 309 holes totaling 92, 194 feet on the San Miguel bench. Reserves total about 43, 000 short tons of material 1 foot or more thick and contain 0,.10 percent or more U30 or 1. 0 percent or more V205. Of these reserves 3, 300 short tons occur in private land. These reserves are in ten deposits found by Geological Survey drilling. Potential reserves (reserves based on geologic evidence …

Report discussing the San Miguel bench and the production of carnotite from deposits consisting of sandstone with uranium- and vanadium-bearing minerals.

Report discussing a petrographic study of the uranium ore-producing formations of the Colorado Plateau by means of thin section study, grain-size analyses and the field examination of sedimentary procedures.

A report about strata of conglomeratic sandstone which is localized st the base of the Brushy Basin shale member of the Morrison formation of Jurassic Age. These strata are discrete lithologic units which contain sedimentary structures oriented in a prevailing easterly direction.

Abstract: "The thiocyanate method is applied to the determination of uranium in ores after separation by ethyl acetate extraction." Sections are included for prelimnary experiments, and the procedure for the analysis of uranium ores and minerals.

Introduction: Detailed geologic mine mapping and sampling of the J.J. mine in the Jo dandy area, Montrose County, Colo., were undertaken to study a vanadium-uranium ore body in terms of the physical relationships of ore to host rock, the paragenetic sequence of ore minerals, and the sequential development of an oxidized suite of ore minerals from unoxidized ore.

A report vanadium-uranium ore in the J. J. mine in Montrose County, Colorado.

Report discussing an improved sample holder for measuring the radioactivity of powdered samples. The sample holder "consists of a thin-walled Geiger-Mueller tube, a ground-glass joint, and a four-pin connector."

Report discussing a study in which the plant analysis method of botanical prospecting for concealed uranium deposits was employed in the Deer Flat area, White Canyon district, San Juan County, Utah. The study took place from May to July, 1953.

An interim report regarding botanical prospecting for uranium in the Shinarum conglomerate at Deer Flat, in the White Canyon District, San Juan County, Utah. This report concerns work done on behalf of the Division of Raw Materials of the U.s. Atomic Energy Commission.

From introduction: This preliminary report details the geology and mineral deposits of the northern Elkhorn Mountains, Montana.

From introduction: This report concerns the investigation of uranium deposits in the Gas Hills area in July 1954.

Report presenting the results of field investigations for uranium in asphalt-bearing rocks in the western states during 1953 and 1954.

A report about uranium deposits found in carnotite.

Discussing the reconnaissance investigation of uranium occurrences in the Saratoga Area, in Carbon County, Wyoming

From Introduction: "The references in this bibliography represent nearly all of the reports pertaining to uranium in domestic phosphorites that were publicly available as of May 31, 1955."

Abstract: Wavellite, crandallite, and millisite are completely dissolved by boiling samples for 20 minutes with 1+1 hydrochloric acid; only 1 percent of the aluminum present in kaolinite is dissolved. This method of decomposition can therefore be used for differentiating the aluminum present in wavellite, crandallite, and millisite form that in kaolinite in samples from the aluminum phosphate zone. This method should prove valuable in prospecting and benefication studies.

A report about a method for the spectrophotometric determination of vanadium in acetone-water medium based on the reaction between vanadium (IV) and thiocyanate.

A report about thoron which is popularly used for the spectrophotometric determinations of thorium. The study describes the use of tartaric acid as a masking reagent for zirconium.

A report about a prometasomatic magnetite-hematite deposit in Permian sedimentary rocks near the margin of the Lone Mountain stock in Lincoln County, New Mexico, contains between 0.015 percent and 0.031 percent uranium.

From abstract: Uranium minerals and radioactivity anomalies occur in many silver lead veins and chalcedony veins and vein zones in the Boulder batholith of southwestern Montana.

Report discussing a study in which a group of claylike silicates containing vanadium were examined by X-ray diffraction methods to determine their mineralogic composition.