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Abundance and distribution of uranium and thorium in zircon, sphene, apatite, epidote, and monazite in granitic rocks

Trace Elements Investigations 636

By:
and

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Abstract

Analyses were made of uranium and thorium in ziircon, sphene, apatite, epidote, and monazite separated as accessory minerals from samples of granitic rock from widely scattered localities to indicate the abundance and distribution of these two elements among the five mineral phases.  For any pair of mineral phases the distribution ratio remains within the same order of magnitude over the different rocks tested, although the variability of the data is such that only wide departures from constancy could be ascertained.  Such gross differences have not been found. 

Additional publication details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
Abundance and distribution of uranium and thorium in zircon, sphene, apatite, epidote, and monazite in granitic rocks
Series title:
Trace Elements Investigations
Series number:
636
Year Published:
1956
Language:
English
Publisher:
U.S. Geological Survey
Publisher location:
Washington, D.C.
Description:
20 p.
Online Only (Y/N):
N
Additional Online Files (Y/N):
N