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Radiometric Examination of Rock Specimens from Mount McKinley, Alaska
Abstract: A suite of 50 rock specimens, collected by the 1947 Washburn Mount McKinley Expedition, was scanned radiometrically. The maximum radioactivity observed in any one of the specimens was about twice background. Radiometric analyses of the most radioactive samples show that a sample of vein quartz coated with manganese oxide contains 0.009 percent equivalent uranium and that the maximum equivalent uranium content of granitic rock types is .004 percent. The radioactivity of the manganese-stained quartz is probably due to traces of uranium in the manganese mineral, whereas that of the granitic rocks is due to radioactive accessory minerals.
Date:
February 1951
Creator:
Matzko, John J.
System:
The UNT Digital Library
Radiometric Examination of Rock Specimens From Mount McKinley, Alaska
Report discussing a study in which a suite of 50 rock specimens collected by the 1947 Washburn Mount McKinley Expedition was scanned radiometrically.
Date:
February 1951
Creator:
Matzko, John J.
System:
The UNT Digital Library
A Semiquantitative Spectrographic Method for the Analysis of Minerals, Rocks, and Ores
From Abstract: "The semiquantitative method described determines 55 elements in one arcing of a 10-mg sample, requires a minimum of sample handling thus reducing the chances of contamination, detects low concentrations of elements, and is rapid."
Date:
February 1951
Creator:
Waring, C. L. & Annell, C. S.
System:
The UNT Digital Library
Distribution of Uranium in Rich Phosphate Beds of the Phosphoria Formation
From abstract: "Five sets of 'close' samples were analyzed radiometrically for uranium, and chemically for P₂O₅, CaO, organic matter, and loss on ignition. A Rosiwal analysis was made of thin sections of one set of samples."
Date:
February 1951
Creator:
Thompson, M. E.
System:
The UNT Digital Library