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Changes in crystal morphology of synthetic reedmergnerite (NaBSi3O8) during ordering experiments

Published online by Cambridge University Press:  05 July 2018

R. A. Mason
R. A. Mason*
Affiliation:
Dept. of Geology, The University, Manchester M13 9PL, Great Britain
*
* Present address:, The University of Chicago, Dept. of the Geophysical Sciences, 5734 S. Ellis Avenue, Chicago Illinois 60637, USA
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Summary

The morphologies of hydrothermally grown reedmergnerite crystals change systematically with time and rate of change of B, Si order. Three stages in this process are recognized: (1) Growth of well-faceted crystals. (2) Development of etching leading to the formation of irregular grains. (3) Modification of irregular grains to form rounded or ellipsoidal crystals. A solutionreprecipitation process is responsible for the morphological changes and the increase in degree of order of B and Si with time at constant temperature and pressure.

Type
Research Article
Information
Mineralogical Magazine , Volume 43 , Issue 331 , September 1980 , pp. 905 - 908
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1980

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