Structural and Morphological Studies of Lava Rock from Mount Gamalama Ternate for Possible Functional Materials Applications
Abstract: A large eruption of
Mount Gamalama happened nearly 350 years ago has left the frozen lava rocks
that are now spread in the form of black stone located in the North-East coast
of the island of Ternate, called batu angus (Angus stone). This paper reports
the basic analysis including the phase content, crystal structure and particle
morphology of the frozen lava rock, Angus stone, briefly. Based on the XRD
pattern, Angus stone contains up to 20% of magnetic phases. The analysis of XRF
and XRD data reveals that there are dominantly non-magnetic phases (silicate
phases) in the Angus stone with the combination of Si-Al-K-Ca-O elements. Elemental
distribution map from SEM/EDX image shows that there is a clear separation
between non-magnetic and magnetic phases in the crushed powders indicating the
easiness to obtain both phases separately. This study proves that Angus stone
has potential application as a base material for the preparation of magnetic
and non-magnetic functional materials.
Penulis: Malik Anjelh Baqiya
Kode Jurnal: jpfisikagg170001
