An x-ray diffraction study of synthetic members of the pyromorphite series

W. E. Baker

Article navigation

Research Article| December 01, 1966

An x-ray diffraction study of synthetic members of the pyromorphite series

W. E. Baker

Broken Hill Division, The University of New South Wales, Australia

Search for other works by this author on:

GSW

Google Scholar

Author and Article Information

W. E. Baker

Broken Hill Division, The University of New South Wales, Australia

Publisher: Mineralogical Society of America

Received: 23 Feb 1966

Accepted: 12 May 1966

First Online: 06 Jul 2018

Online ISSN: 1945-3027

Print ISSN: 0003-004X

Mineralogical Society of America

American Mineralogist (1966) 51 (11-12): 1712–1721.

Abstract

Twenty-five compounds within the composition field covered by the pyromorphite series were prepared by simple hydrous synthesis at 60-80° C. X-ray powder diffraction examination was used to record compositional differences and to examine the solid solution characteristics of the series. Contrary to the views expressed in modern texts, complete solid solution between the end members was found to exist. Cell dimensions for the pure compound Pb₅(PO₄)₃Cl were found to be a = 9.987 Å, c = 7.330 Å; for Pb₅(AsO₄)₃Cl a = 10.251 Å, c = 7.442 Å and for Pb₅(VO₄)₃Cl a = 10.323 Å, c = 7.346 Å.