The Li2O-B2O3-H2O system has been studied under hydrothermal condition
s. Li4B7O12Cl, Li2B4O7, Li3B5O8(OH)2, Li2HBO3, and LiH2B5O9 are the ph
ases crystallizing in this system at 250-degrees-C and P < 100 bars. T
he growth of these phases has been discussed in brief Also, the growth
morphology of these phases has been studied with reference to the gro
wth parameters.