Hostname: page-component-586b7cd67f-2plfb Total loading time: 0 Render date: 2024-12-01T04:46:23.736Z Has data issue: false hasContentIssue false
  • English
  • Français

Paratacamite, a new oxychloride of copper

Published online by Cambridge University Press:  14 March 2018

G. F. Herbert Smith
G. F. Herbert Smith*
Affiliation:
British Museum
Get access Rights & Permissions [Opens in a new window]

Extract

About two years ago there was brought to the British Museum a specimen covered with numerous mall cubes—so the crystals appeared to be—of the bluish-green colour suggestive of a mineral containing copper. Judged by their form the crystals might be beleito, but a qualitative analysis by Dr. Prior, while revealing the presence of chlorine and copper, showed no trace of lead. A crystal was then removed from the specimen and measured on a goniometer, and the discovery was at once made that these apparent cubes are iu reality rhombo-hedra with an angle of nearly 88° between adjacent faces. Since no previously known oxychloride of copper crystallizes in this form, these crystals were evidently worthy of further investigation.

Type
Research Article
Information
Mineralogical magazine and journal of the Mineralogical Society , Volume 14 , Issue 65 , May 1906 , pp. 170 - 177
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1906

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 172 note 1 These angles are taken from the author's paper, Min. Mag., 1898, vol. xii, pp. 15-25.

Page 174 note 1 These Values are taken from the author's paper, loc. cit.

Page 174 note 2 Min. Mag., 1899. vol. xii, pp. 175-182.

Page 176 note 1 loc. cit., p. 24.

Page 177 note 1 From loss on ignition of a glass tube containing the mineral and a plug of dry sodium carbonate. A direct determination of the water made on 0.3464 gram by Penfield's method gave as low a percentage as 12.56, but there is reason to fear that some loss of water may have occurred.

Page 177 note 2 Min. Mag., 1899, vol. xii, p. 110.