Bu çalışmalarda, Sındırgı yakınlarında tezahür eden Howlit mineralinin kimyasal bileşimi ortaya konmuş ve ayrıca dehidratasyonu da incelenmiştir. Dehidratasyon çalışmaları DTA ve x-ışınları analizleri ile de takib edilmiştir. Elde edilen kalsine ürünler, mikroskopik incelemelerle de detaylı bir şekilde etüd edilmiştir
Summary:
In this paper Chemical composition, differential thcrmal analyscs and dehydration of nodular hoıolite mineral occuring around Sındırgı area are summ-arized. In addition, x - ray diffraction and microscopic studies are made on the above mentioned mineral.
Invcstigations rcvealed that hoıolite mineral converts into calcium borate through an ezothcrmic reaction at 850 - 900cC follouing complc- tion of dehydration. Another point of interest obscrvcd during the processes is that, boron - hydrates which are stable intermediate pro- duets are not formed during dehydration, contrary to the other boron minerals. This fact bccame ckar cspecially in x-ray studies
