Pulsation processes at hydrothermal crystal growth (beryl as example)

The experiments on beryl hydrothermal growth showed that spontaneously formed growth zonality in crystals can be explained by sporadic temperature fluctuations at ∼0.7°C amplitude. Model experiments under normal conditions proved that such temperature fluctuations in the growth medium can be generat...

Full description

Saved in:
Bibliographic Details
Published in:Journal of crystal growth 1999-10, Vol.206 (3), p.203-214
Main Authors: Thomas, Victor G, Demin, Sergey P, Foursenko, Dmitry A, Bekker, Tatjana B
Format: Article
Language:English
Subjects:
Beryl
Growth zonality
Heat–mass transfer
Hydrothermal growth
Pulsation of growth processes
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The experiments on beryl hydrothermal growth showed that spontaneously formed growth zonality in crystals can be explained by sporadic temperature fluctuations at ∼0.7°C amplitude. Model experiments under normal conditions proved that such temperature fluctuations in the growth medium can be generated in hydrothermal growth processes. They are due to the pulsation character of heat–mass transfer in autoclave. The model is suggested to explain the hydrothermal crystal growth as a result of the instant local overcooling of the diffusion layer when they are in contact with the cold portions of hydrothermal solution.
ISSN:0022-0248
1873-5002
DOI:10.1016/S0022-0248(99)00312-7