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

Abstract: A number of radioactivity anomalies and secondary uranium minerals have been found in the Rimini area near the northwestern margin of the Boulder batholith. Most of the anomalies are associated with chalcedonic vein zones that consist of one or more veins of cryptocrystalline and fine-grained quartz in silicified quartz monzonite and alaskite. Seventeen of the anomalies were found along veins that contain base and precious metals; nine were along veins in the vicinity of the village of Rimini from which there has been production of lead, silver, zinc, and gold.

Report discussing the results of geological studies that have been conducted in the Clancy Creek in the Jefferson City Quadrangle of Jefferson County, Montana. The location is of interest due to the discovery of several radioactivity anomalies and secondary uranium minerals in the area.

Abstract: Secondary minerals of the uranite group occur in dense quartz veins and in altered aplitic granite along and near the crest of the east-trending ridge about one mile west of Clancy, Montana. Brief examination suggests that the radioactive minerals are erratically distributed, but a more thorough study of the area will be made by the Geological Survey during the coming field season.

Report describing the geology and structural features of the Comet area of Jefferson County, Montana.

A report regarding the geology and mineralogy of the W. Wilson. Mine near Clancey, Jefferson County, Montana. This report concerns work done on behalf of the division of Raw Materials of the U.S. Atomic Energy Commission.

A preliminary report regarding the Comet Area, in the Jefferson City Quadrangle Jefferson County, Montana. This report contains work done on behalf of the Division of Raw Materials of the U. S. Atomic Energy Commission.