Abstract
IN a recent letter1, it was stated that various specimens of granite contain per gram about 10-6 c.c. of neon and 4 × 10-5 c.c. of argon. This makes the ratio neon/argon some thirteen times as great as in the atmosphere.
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NATURE, 141, 410 (March 5, 1938).
See, for example, Russell, H. N., "The Solar System and Its Origin". (New York: The Macmillan Co., 1935), p. 56.
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RAYLEIGH Nitrogen and Argon in the Earth's Crust. Nature 141, 970 (1938). https://doi.org/10.1038/141970a0
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DOI: https://doi.org/10.1038/141970a0
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