Skip to main content
U.S. flag

An official website of the United States government

Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Https

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Search Results

164494 results.

Alternate formats: RIS file of the first 3000 search results  |  Download all results as CSV | TSV | Excel  |  RSS feed based on this search  |  JSON version of this page of results

Page 6438, results 160926 - 160950

Show results on a map

Publication Extents

Not all publications have extents, not all extents are completely accurate
Some mining districts of eastern Oregon
James Gilluly, J. C. Reed, C. F. Park Jr.
1933, Bulletin 846-A
This report presents the results of a reconnaissance of most of the mining districts of Oregon east of the Cascade Range, with the exception of the districts in the Sumpter quadrangle. The districts described are distributed through an area roughly coincident with the Blue Mountains, which extend over much of...
Metalliferous deposits of the greater Helena mining region, Montana
Joseph Thomas Pardee, F. C. Schrader
1933, Bulletin 842
The ore deposits described in this bulletin are distributed through a region of about 3,000 square miles surrounding the city of Helena, Mont. In general the surface of this region is mountainous, but it includes several large intermontane valleys. Large areas in the northern and eastern parts of the region...
Fifty-fourth annual report of the Director of the Geological Survey
Walter Curran Mendenhall
1933, Annual Report 54
The appropriations made directly for the work of the Geological Survey for the fiscal year 1933 included 12 items, amounting, to $2,181,000. Of the balance remaining in the 1932 appropriation for topographic surveys, $150,000 was continued available for expenditure during the fiscal year 1933, and the sum of $284,400 was transferred to the Geological...
Classification and nomenclature of rock units
G. H. Ashley, M.G. Cheney, J.J. Galloway, C.N. Gould, C.J. Hares, B.F. Howell, A.I. Levorsen, H. D. Miser, R.C. Moore, J.B. Reeside Jr., W.W. Rubey, T. W. Stanton, G. W. Stose, W.H. Twenhofel
1933, Economic Geology (44) 423-459
No abstract available. ...
A new lepidolite deposit in Colorado
E.B. Eckel
1933, Journal of the American Ceramic Society (16) 239-245
A newly discovered pegmatite deposit near Ohio City, Colorado, is chiefly lepidolite, massive topaz, beryl, and albite, with some samarskite and columbitc. Three parallel pegmatite dikes, cach about 11 fect thick and 300 feet long, cut black schist. The minerals arc banded parallel to walls, with the following succession from walls to center; fine‐grained albite...