سال انتشار: ۱۳۸۷

محل انتشار: همایش بین المللی ژئولیت ایران

تعداد صفحات: ۷

نویسنده(ها):

میثم رضایی –
داود اخضری –
عاطفه کشاورزی –
محمدزمان علائدین –

چکیده:

The occurance of analcime in the Karaj Formation of Kuh-e-Astaneh, is described based on the field
study, XRD, SEM and chemical analyses of host rocks. The analcime mineral is associated with abundant
quartz, lesser amounts of feldspar and a regular mixed-layered smectite. The absence of high silica zeolites,
clinoptilolite or mordenite, as precursors in the samples of high K/Na ratio, are evidences indicate that the
analcime formed directly from vitric tuffs of The Karaj Formation in a high saline basin prior to burial. All
evidences are in favor of diagenetic character of analcime in this region.