An accurate determination of the cell dimensions of bultfonteinite, Ca4Si2O10H6F2
- 14 March 1955
- journal article
- Published by Mineralogical Society in Mineralogical Magazine and Journal of the Mineralogical Society
- Vol. 30 (228) , 569-573
- https://doi.org/10.1180/minmag.1955.030.228.02
Abstract
Bultfonteinite from Bultfontein mine, Kimberley, South Africa, is a hydrated fluorine-containing calcium silicate, of approximate composition Ca4Si2O10H6F2. It was first described in 1932 by Parry, Williams, and Wright,1 who gave an account of its morphology, optical properties, composition, and chemical relationships. It is triclinic but markedly pseudo-orthorhombic. The present work consists primarily of a determination of the unit-cell dimensions, involving a more accurate evaluation of the interaxial angles than the earlier one; this is followed by some tentative suggestions about the structure.Keywords
This publication has 3 references indexed in Scilit:
- The structure of afwillite, Ca3(SiO3OH)2.2H2OActa Crystallographica, 1952
- The accurate determination of cell dimensions from single-crystal X-ray photographsActa Crystallographica, 1948
- On bultfonteinite, a new fluorine-bearing hydrous calcium silicate from South Africa.Mineralogical Magazine and Journal of the Mineralogical Society, 1932