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E.N. Harshman

Publications and source records attributed to E.N. Harshman.

9 recordsLinked to original sources
USGS1970

Uraninite-bearing contact metamorphic deposits, Heaths Peak, Carbon County, Wyoming

Deposits that contain uraninite and sulfide minerals at Heaths Peak, Carbon County, Wyo., display a zoned distribution of metals from the edge of granite into adjacent metamorphic rocks. The metallic minerals -- uraninite, molybdenite, pyrite, chalcopyrite, galena, pyrrhotite, and marcasite -- are concentrated on the undersides of metamorphosed roof pendants. At the Little Man mine, deposition was related to a small cupola projecting into the central part of an elongate pendant. The host rocks and the deposits are of Precambrian age.

Wyoming↗
USGS1970

Uranium ore rolls in the United States

About 40% of the uranium ore reserves in the United States, minable at $8 per pound of contained U 3 O 8 , are in roll-type deposits in the State of Wyoming. The host rocks are arkosic sandstones, deposited in intermontane basins under fluvial conditions, and derived from the granitic cores of mountain ranges that flank the basins. The host rocks are Eocene and possibly Paleocene in age and are, or were, overlain by a sequence of continental tuffaceous siltstones, sandstones and conglomerates 400 - 700 m thick.

Conference Paper↗