Bulletin of the Geological Society of Malaysia 56, December 2010, pp. 107 – 113
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Pusat Pengajian Sains Sekitaran dan Sumber Alam, Fakulti Sains dan Teknologi,
Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, Malaysia
Abstrak— Suatu kajian mineral berat dalam sistem saliran dan cerapan geomorfologi telah dilakukan di kawasan Manik Urai, Kelantan melalui kerja-kerja lapangan dan analisis makmal. Kaedah makmal meliputi analisis sampel mineral melalui pemisah isodinamik Frantz, penentuan mengguna mikroskopi, pembelauan sinar-X, SEM dan pembilangan titik. Melalui analisis tersebut ditemui mineral-mineral dominan iaitu ilmenit, hornblend, zirkon dan magnetit manakala mineral-mineral minor dan surih pula ialah monazit, xenotim, pirit, mika, alanit, garnet, epidot, turmalin dan kasiterit. Komposisi mineralogi sampel-sampel dipungut menunjukkan asalan sedimen dari terain berbeza-beza. Fitur-fitur geologi menarik di kawasan ini ialah muka buminya yang berbukit bukau dan kehadiran beberapa lata seperti Lata Rek. Kebitaraan geologi kawasan seperti kandungan mineral berat dalam saliran sungai dan kecantikan muka bumi Lata Rek di sini boleh dibangunkan sebagai warisan geologi dalam usaha menarik para pengunjung ke Negeri Kelantan Darul Naim.
Kata kunci: mineral berat, fitur geomorfologi, warisan geologi, Manik Urai, Kelantan
Abstract— A study of heavy minerals in the stream drainage system and geomorphology was made in Manik Urai, Kelantan, by means of field and laboratory works. Laboratory analyses were carried out using Frantz isodynamic separator, microscopy, X-ray diffraction, SEM and point-counting. From the analyses, dominant heavy minerals observed were ilmenite, hornblende, zircon and magnetite while minor and trace minerals were monazite, xenotime, pyrite, mica, allanite, garnet, epidote, tourmaline and cassiterite. Mineralogical compositions of the collected samples indicate that the provenance of the sediments were from varying terrains. Interesting geological features in the area are its hilly-mountainous terrain, and the presence of a cascading waterfall at Lata Rek. The unique geological feature of the area such as its heavy mineral content in the stream drainage system and its beautiful landscape at Lata Rek gives the area the potential of being a geological heritage site which can attract visitors to Kelantan.
Keywords: heavy mineral, geomorphological features, geological heritage, Manik Urai, Kelantan
https://doi.org/10.7186/bgsm56201015
