General geology and sequences of metamorphic rocks mineral assemblages in Pulau Banding, Gerik, Perak, Malaysia

Banding island and its surrounding are dominated by low grade regional metamorphism which originated from East Malaya Block that dated from Ordovician to Permian age. This paper presented new study on the mineral assemblages and the compositions on the rocks protolith. The study area is situated at longitudes of 101° 22’ 25”E to 101° 22 35”E and latitudes at 5° 33’ 47”N to 5° 32’ 95”N. The metamorphic rocks consist of phyllite, mica schist, and metasandstone interbedded with slate. Majority of the phyllite are highly weathered with visible joint and contains quartz veins with thickness varies from 0.5 cm to 6 cm, which following the direction of rock foliation. Phyllite is dominated with mica group and clay minerals, and the mica is mostly muscovite. While the mica shist is also dominated with mica group with muscovite mineral. The direction of the regional metamorphism is lowest from the west of the Banding Island, to slightly moderate metamorphism toward the east of the study area, which supported by the changes of the metamorphic facies from phyllite to schist according to the petrographic analysis. Regionally, Perak state especially in Gerik area are dominated by rocks from Paleozoic era as Perak is located in Western Belt of Peninsular Malaysia.