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On the accuracy of mineralogical measurements

Published online by Cambridge University Press:  14 March 2018

Max H. Hey
Max H. Hey*
Affiliation:
Mineral Department of the British Museum of Natural History
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Extract

Almost any scientific periodical devoted to mineralogy will afford examples of the failure on the part of some workers to realize the limitations of the accuracy of their measurements. Often results are calculated to far more places of decimals than the measurements can possibly warrant. In other instances measurements which show differences quite outside the limits of probable error are regarded as being in good agreement; this last failing applies especially to chemical analyses, which occasionally provide decided evidence against the formula they are supposed to support.

Type
Research Article
Information
Mineralogical magazine and journal of the Mineralogical Society , Volume 23 , Issue 144 , March 1934 , pp. 495 - 500
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1934

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References

page 496 note 1 Barker, T. V., Graphical and tabular methods in crystallography. London, 1922, p. 100.Google Scholar

page 497 note 1 Kołaczkowska, M., Arch. Prac. Min. Tow. Nauk. Warszawa, 1926, vol. 1, p. 9.Google Scholar [Min. Abstr., vol. 3, p. 321.]

page 497 note 2 Schwietring, F., Zeits. Krist., 1930, vol. 75, p. 449 Google Scholar and vol. 76, p. 87, [M.A. 4 447]. W. Geffcken and H. Kohner (Zeits. Physikal. Chem., 1928, Abt. B,

page 499 note 1 Hey, J. M. H., Min. Mug., 1933, vol. 23, p. 367.CrossRefGoogle Scholar

page 499 note 2 Hillebrand, W. F. and Lundell, G. E. F., Applied inorganic analysis. New York, 1929, pp. 3–6 Google Scholar, 874 ft.

page 499 note 3 Mainly substances determined indirectly, as alumina or ferric iron in rock analyses. Here errors in several major constituents may, in an unfavourable case, fall on one minor constituent.

page 500 note 1 Hutchinson, A., Min. Mag., 1924, vol. 20, p. 198.CrossRefGoogle Scholar