Geochemistry of tourmaline-bearing granite from Maras-Jong, Terengganu, Peninsular Malaysia

The Eastern Belt Granite of Peninsular Malaysia consists mainly of I-type granites with subordinate S-type granites. The monzo- to syenogranite Maras-Jong pluton in the Eastern Belt Granite show many S-type characteristics such as presence of tourmaline, gamet, similar texture (both granites are coarse grained primary textured sometimes dominated by K-feldspar phenocrysts) and high SiO, contents. However, using the previous granite classification, ACNK values below l.l and low Al biotite content, the Maras-Jong granite can be classified as I-type granite. It is suggested that the Maras-Jong granite is a felsic I-type granite. Abstrak: Granit Jalur Timur di Semenenjung Malaysia mengandungi batuan granit jenis I dengan sedikit jenis S. Batuan Monzogranit dan syenogranit pluton Maras-Jong di dalam Granit Jalur Timur menunjukkan ban yak cirri-ciri granit jenis S seperti kehadiran mineral tourmalin, garnet, persamaan tekstur (kedua-dua granit adalah berbutir kasar bertekstur primer kadang kala didominasikan oleh fenokris K-feldspar) dan kandungan Si02 yang tinggi. Walau bagaimanapun, menggunakan pengelasan yang terdahulu, nilai ACNK dibawah 1.1 dan mengandungi biotite kurang AI, Granit Maras-Jong boleh dikelaskan sebagai jenis I.