Papandayan merupakan salah satu gunungapi strato tipe A berbentuk kerucut terpancung yang dibangun oleh perselingan aliran lava dan endapan piroklastika aliran dan jatuhan. Pusat erupsinya sering berpindah sehingga bentuk kerucut menjadi tidak teratur dan menyebabkan terbentuknya kawah-kawah. Berdasarkan catatan sejarah letusannya, G. Papandayan pernah meletus atau meningkat kegiatannya sebanya…
Everyone intersted in minerals and mineral collecting will want to have useful little book close at hand, either for field use or home study. It has been especially designed to give the beginner a knowledge of mineralogy that will greatly increase his enjoy ment of it. The book begins with a definition of the mineral as a naturally occuring chemical element or compound formed as a product of in…