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Page 6223, results 155551 - 155575

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Publication Extents

Not all publications have extents, not all extents are completely accurate
Geology and zinc-lead deposits in the Couler Valley area, Dubuque County, Iowa
C. Erwin Brown, L.G. Collins, Percy Crosby
1955, Miscellaneous Field Studies Map 42
Geologic investigations were begun in the Iowa portion of the Wisconsin-Illinois-Iowa zinc-lead district to appraise its potentialities: (1) for zinc ore in strata that elsewhere in the mining district contain large zinc ore bodies and (2) for lead and zinc deposits of the type that were mined extensively in Dubuque...
Preliminary report on the potential waterpower of Grant, Ptarmigan, Cooper and Crescent lakes on the Kenai Peninsula, near Seward, Alaska
Arthur Johnson
1955, Open-File Report 55-74
Grant, Ptarmigan, Cooper, and Crescent Lakes, located in the Kenai Mountains in the upper portion of the Kenai River Basin, approximately 25 miles to the north of Seward, present favorable opportunities for the development of waterpower. Grant and Ptarmigan Lakes can be made readily accessible by roads from the Seward-Anchorage...
Ore deposits on northwestern Chichagof Island, Alaska
Darwin L. Rossman
1955, Open-File Report 55-154
The area mapped includes most of northwestern Chichagof Island. The work, started in 1946, is a continuation of the geologic mapping done in the adjoining Chichagof mining district by Reed and Coats. The gold-bearing zone recognized by these writers continues through the area mapped by the writer to the northern...
Geology of two areas of pegmatite deposits in southeastern Alaska
C.L. Sainsbury
1955, Open-File Report 55-159
A pegmatite deposit about 600 feet in diameter crops on a high bluff less than one-half mile east of a small unnamed cove between Redfish and Byron Bays, on the west coast of Baranof Island, southeastern Alaska.The deposit which comprises several pegmatite bodies consists of quartz, albite-oligoclase, microcline and mica,...