Kelud volcano is located in East Java Province, Indonesia. According to Geochemical study of Kelud Volcano, it could be divided into 3 periods which are Kelud I (older than 100 ky BP), Kelud II (40 – 100 ky BP), and Kelud III (younger than 40 ky BP). A specific petrogenesis of Kelud are dominatad by magma mixing and fractional crystalization. New petrological data from Kelud volcano was taken…