Hostname: page-component-586b7cd67f-t7czq Total loading time: 0 Render date: 2024-11-26T05:39:38.789Z Has data issue: false hasContentIssue false
  • English
  • Français

Specific gravities of minerals: an index of some recent determinations

Published online by Cambridge University Press:  14 March 2018

L. J. Spencer
L. J. Spencer*
Affiliation:
British Museum (Natural History)
Get access Rights & Permissions [Opens in a new window]

Extract

As a first-aid in the identification of non-metallic minerals I have for many years made use of specific gravity, which is a character that can be easily and rapidly determined hy the use of heavy liquids. A small, clean fragment of the mineral to be tested is dropped into one or other of a series of tubes containing methylene iodide with various small known Crystals as indicators. Adding benzene from a dropping-bottle, the density of the liquid is quickly brought to that of the mineral. This preliminary determination of the specific gravity gives a useful clue as to the nature of the mineral—what it may or may not be ; and the same fragment can then be used for confirmatory optical and micro-chemical tests.

Type
Research Article
Information
Mineralogical magazine and journal of the Mineralogical Society , Volume 21 , Issue 119 , December 1927 , pp. 337 - 365
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1927

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

page 337 note 1 Spencer, L. J., Min. Mag., 1897, vol. 11, p. 186 Google Scholar.

page 338 note 1 Spencer, L. J., Min. Mag., 1904, vol. 14, p. 43 Google Scholar.

page 338 note 2 Min. Abstr., vol. 2, p. 487.

page 338 note 3 M. Websky, Die Mineral-Species nach den f¨r das specifische Gewicht derselben angenommenen und gefundenen Werthen. Breslau, 1868, vi + 170 pp.

page 339 note 1 See A. Hutchinson, A graphical method for the rapid correction of specific gravity determinations. Min. Mag., 1924, vol. 20, pp. 198-200, pl. IV ; Alhers, L., Zeits, Krist., 1924, vol. 59, p. 298 Google Scholar [ Min. Abstr., vol. 2, p. 374]

page 340 note 1 Forty-four values from the last number (no. 118) of the Magazine are not included in this diagram.

page 340 note 2 Min. Abstr., vol. 3, p. 178.

page 340 note 3 Min. Mag., 1903, vol. 13, p. 276.

page 341 note 1 Washington, H. S., Journ, Franklin Inst., 1920, vol. 190, p. 804 Google Scholar [Min. Abstr., vol. 1, p, 160].