Accession Number : ADA297730

Title :   Exploration Diamond Drilling in the Boulder Batholith, Jefferson and Silver Bow Counties, Montana. Part 1,

Corporate Author : ATOMIC ENERGY COMMISSION WASHINGTON DC

Personal Author(s) : Jarrard, L. D. ; Mead, W. E.

PDF Url : ADA297730

Report Date : MAR 1955

Pagination or Media Count : 13

Abstract : The Boulder batholith region is located in southwestern Montana . Uranium was first discovered in the area in June 1949 and since then many new occurrences have been recognized, although few are of commercial importance. During the summer of 1953, the Commission sponsored its first diamond drilling program in the batholith to explore at depth a number of interesting uranium showings. Operations commenced in July 1953 and ended in November 1953, with the completion of 60 holes totaling 9,807.5 feet. Radiometric logging of the drill holes was accomplished by means of a Geiger counter-type probe. Samples for chemical assay were selected after checking the core with a Geiger counter and correlation with the radiometric logging record. The exploration project did not disclose significant amounts of ore-grade material although encouraging indications were found at two different properties. (MM)

Descriptors :   *DIAMONDS, *DRILLING, BOREHOLES, CHEMICAL COMPOSITION, CLIMATE, GEOLOGICAL SURVEYS, RADIOMETRY, URANIUM, MINERALS, MONTANA, GEIGER COUNTERS, ROCK DRILLING, MINES(EXCAVATIONS), IGNEOUS ROCK.

Subject Categories : Geology, Geochemistry and Mineralogy
      Mining Engineering

Distribution Statement : APPROVED FOR PUBLIC RELEASE