Clay sample gathered from the minesite of Bo. Ticala-an Talakag, Bukidnon was investigated using X-ray diffraction, infrared analysis, thermal analysis, scanning electron microscopy, optical microscopy and chemical analysis.

Size particles of two microns and below collected by elutriation, exhibited a basal reflection at 10.0 Å indicating the presence of halloysite as its main constituent. IR spectra showed a considerable amount of interlayer water from 3623 to 3000 cm^-1. SEM revealed the spherical shape of the mineral with a concave hole of approximately 0.1 µm in diameter. Heat treatment conducted for X-ray and IR analyses showed the effect of heat on clay. At 500^oC, the interlayer water was completely removed and the mineral was transformed to amorphous phase. Further heating at 1200^oC resulted in the formation of poorly crystallized mullite.