Published online by Cambridge University Press: 14 March 2018
The central region of a type 1 stone was found by optical and X-ray topographic examination to be densely populated with small inclusions. The X-ray studies indicated that these were precipitates formed after growth of the stone. Precipitate sizes fell into two groups, 1 µ or less, and around 5 µ. Many cases of decoration of grown-in dislocations by these precipitates were observed.
2 A. R., Lung, Acta Cryst., 1959, vol. 12, p. 249 Google Scholar.
3 Idem,Acta Metallurgica, 1957, vol. 5, p.358.
1 N., Kato and A. R., Lang, Acta Cryst., 1959, vol. 12, p. 787.Google Scholar