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Total Nondestructive Analysis of Caas Syenite

Published online by Cambridge University Press:  06 March 2019

A. Volborth ,
B. P. Fabbi  and
H. A. Vincent
A. Volborth
Affiliation:
Nevada Mining Analytical Laboratory Mackay School of Mines University of Nevada Reno, Nevada
B. P. Fabbi
Affiliation:
Nevada Mining Analytical Laboratory Mackay School of Mines University of Nevada Reno, Nevada
H. A. Vincent
Affiliation:
Nevada Mining Analytical Laboratory Mackay School of Mines University of Nevada Reno, Nevada
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Abstract

Determination of 35 trace and 8 major elements in a granitic rock by nondestructive X-ray emission and fast-neutron activation methods has been accomplished. Trace elements arsenic, barium, cadmium, cerium, cobalt, chromium, cesium, copper, gallium, gadolinium, germanium, hafnium, mercury, indium, lanthanum, molybdenum, manganese, niobium, neodymium, nickel, rubidium, antimony, scandium, samarium, tin, strontium, tantalum, thorium, titanium, vanadium, yttrium, ytterbium, zinc, and zirconium and major elements aluminum, calcium, iron, potassium, and silicon have been estimated in the vacuum X-ray spectrograph. Phosphorus has been excited by a chromium-target tube. Major elements magnesium, sodium, and oxygen have been estimated by the Henke aluminumtarget X-ray spectrograph. Major elements oxygen and silicon have also been determined by fast-neutron activation. Detection limits for traces are in cur system in the range of 1 to 100 ppm with standard deviations of about 1 to 10 ppm. Precision in the determination of major constituents is better than 1% in relative standard deviation. The data are reported in parts per million for the trace elements and for the major elements as well. It is suggested that this type of repotting of geochemical data be preferred to the conventional reporting of major constituents as oxides.

Type
Research Article
Information
Advances in X-Ray Analysis , Volume 11: Sixteenth Annual Conference on Applications of X-ray Analysis, August 9-11, 1967 , 1967 , pp. 158 - 163
Copyright
Copyright © International Centre for Diffraction Data 1967

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References

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