Hostname: page-component-745bb68f8f-mzp66 Total loading time: 0 Render date: 2025-01-11T06:22:21.503Z Has data issue: false hasContentIssue false
  • English
  • Français

Notes on the optical characters of the Globules and Spherulites of Lithium Phosphate and some other salts

Published online by Cambridge University Press:  14 March 2018

C. A. McMahon
Get access Rights & Permissions [Opens in a new window]

Extract

In my paper "On the Micro-chemical Analysis of Rock Making Minerals, '' I noticed the abnormal behaviour of globules of lithium phosphate Li3PO4 + H2O in polarised light; the dark cross which ought to remain fixed when the globule is revolved between crossed nicols, opening up, in some cases, into two hyperbolic branches like those of a biaxial crystal in converging polarised light. I find that similar ano. malous results may be obtained from the globules yielded by other salts; as for example those of the double sulphates of beryllium and potassium (BeSO4K2SO4 + 2H2O), and of lithium and sodium (LiNaSO4).

Type
Research Article
Information
Mineralogical magazine and journal of the Mineralogical Society , Volume 10 , Issue 47 , November 1893 , pp. 229 - 233
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1893

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

Note

1 Min. Mag., Vol X. p. 79.