ON FEASIBILITY OF NBS 70A K-FELDSPAR AS A RB-SR AGE REFERENCE SAMPLE

被引:24
作者
COMPSTON, W
CHAPPELL, BW
ARRIENS, PA
VERNON, MJ
机构
[1] Australian National University, Canberra
关键词
D O I
10.1016/0016-7037(69)90123-9
中图分类号
P3 [地球物理学]; P59 [地球化学];
学科分类号
0708 ; 070902 ;
摘要
X-ray fluorescence and isotope dilution analyses establish the NBS 70a K-feldspar as sufficiently homogeneous after regrinding to serve as an interlaboratory Rb-Sr age reference sample. Similar coefficients of variation at approximately 0.2% for a single analysis using 0.1 g samples are obtained for Rb (530 ppm), Sr (65.1 ppm) and radiogenic Sr (3.0 ppm), both between bottles and within bottles. © 1969.
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页码:753 / &
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