سال انتشار: ۱۳۸۷

محل انتشار: همایش بین المللی ژئولیت ایران

تعداد صفحات: ۷

نویسنده(ها):

Kamaladdin Bazargani-Guilani – Department of Geology, University of Tehran, Tehran
Mohammad Sadegh Rabbani – Department of Chemistry, University of Tehran, Tehran 14155-6455, Iran
Soodabeh Fathi – Department of Geology, University of Tehran, Tehran 14155-6455, Iran

چکیده:

Based on the field studies and thin section, XRD, SEM,and microprobe analyses data, We report, for
the first time, occurrences of natrolite, tetranatrolite epistilbite and analcime in amygdales of altered andesite
and andesitic-basaltic rocks, at north Parandak. Minerals associated with these zeolite are calcite, pyrolusits,
hematite, opal, chalcedony and quartz. The sequence of mineral formation in the amygdales and veins are
primary calcite, analcime, natrolite, mesolite, stilbite-Ca, stilbite, secondary calcite and pyrolusite.
Evidences, such as analcime with low TSi and occurrence of epistilbite show that the zeolites are formed
hydrothermally in this region.