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USGS1951

Preliminary report on the Apex and Paymaster mines, Washington County, Utah

The Apex and Paymaster mines in the Tutsagubet mining district, 25 miles southwest of St. George, Utah, are at an elevation of about 5,000 feet in the Beaver Dam Mountains. The ore was deposited in a steeply dipping fault zone which cuts a thick series of gently dipping limestones of Pennsylvanian age with minor interbedded shales and sandstones. The ore now consists primarily of copper oxides, but is reported to contain small quantities of lead and sine oxides. Complete oxidation extends to the 1,400 level of the Apex mine, the deepest level in this mine. Lead oxides are reported to have been more plentiful in the workings near surface, but the stoped area is now caved to the 1,330 level. The ore bodies probably formed largely as a filling in the fault fissure, and in crushed zones along the fault, with only minor replacement extending for short distances along the bedding. The sulfides oxidized essentially in place and migration of the oxidized copper ores is believed to be limited to a few feet. Additional exploration below the known ore shoots in the Apex and Paymaster mines and along the fissure between the two mines may disclose new ore bodies.

Open-File Report↗
USGS1951

Preliminary report on ground-water conditions in the Cloquet area, Carlton County, Minnesota

A study of the geology and ground-water conditions in the.area including Cloquet, Minn., was begun by the United States Geological Survey in 1948 in financial cooperation with the Minnesota State Department of Conservation, at the request of the city of Cloquet for assistance in locating large additional ground-water supplies for industrial and municipal use. The location of the area is show on figure 1. Although the present municipal wells provide a fairly adequate supply for current municipal needs, which averaged about three-quarters of a million gallons a day in 1946, there is great need for large supplies of good water, on the order of 10 million gallons a day, for use by the paper mills and other industries there. At present the industries are using water from the St. Louis River, but the water is unsatisfactory and expensive to use because it contains a large amount of objectionable organic material.

Minnesota↗