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Page 6869, results 171701 - 171725

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The geology and ore deposits of Upper Mayflower Gulch, Summit County, Colorado
John Alexander Randall
1958, Open-File Report 58-79
Upper Mayflower Gulch is on the highly glaciated western side of the Tenmile Range near Kokomo in central Colorado. Somewhat less than $500,000 in silver and gold has been produced from the area since the first mining in the 1880' s. In the mapped area high grade regional metamorphism has...
Geology of part of the Fanny Peak quadrangle, Wyoming-South Dakota
Jack Burton Epstein
1958, Open-File Report 58-35
The Fanny Peak quadrangle is located on the west flank of the Black Hills. The exposed strata total over 4000 feet in thickness and range in age from Mississippian to late Cretaceous. Local surficial Cenozoic deposits are common.The upper 200 to 300 feet of the Minnelusa formation is a breccia...
Geology and ore deposits of the Jerome area, Yavapai County, Arizona
C.A. Anderson, S.C. Creasey
1958, Professional Paper 308
The Jerome area, in central Arizona, includes the Mingus Mountain quadrangle and parts of the adjacent Clarkdale, Mayer, and Mount Union quadrangles. The largest copper mines in the area at Jerome are the United Verde Extension and the United Verde. The United Verde Extension, closed in 1938 and the United...