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Magnetite and Ilmenite Resources, Iron Mountain Area, Albany County, Wyoming

Description: Report issued by the U.S. Bureau of Mines discussing magnetite and ilmenite mining methods and practices. As stated in the introduction, "this report summarizes the exploration of the titaniferous iron deposits in the Iron Mountain area, Albany County, Wyo." (p. 1). This report includes maps, tables, illustrations, and photographs.
Date: 1961
Creator: Dow, Vernon T.

Proterozoic Geology of the Granite Village Area, Albany and Laramie Counties, Wyoming, Compared with that of the Sierra Madre and Medicine Bow Mountains of Southeastern Wyoming

Description: Abstract: "Precambrian metavolcanic rocks north and south of the village of Granite, Wyoming, belong to a sequence of isolated metavolcanic and metasedimentary masses in the Sherman Granite of the southern Laramie Mountains. Similar rocks lie to the west, in the Precambrian uplifts of the southern Medicine Bow Mountains and Sierra Madre. A major fault system, the Cheyenne belt, splits these two ranges into northern and southern domains, and may constitute a suture along which Early Proterozoic islands arcs collided with an Early Proterozoic passive margin. Projection of the Cheyenne belt into the Laramie Mountains suggests that the study area, which is 65 kilometers south of the proposed suture, comprises a distinct volcanic arc with a unique chemistry or age. However, chemistry of the volcanic rocks of the study area as determined as so far does not differ significantly from those of the Medicine Bow Mountains and Sierra Madre."
Date: 1997
Creator: Houston, Robert S. & Marlatt, Gordon