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The Journal of the Royal Institute of Thailand Vol. 27 No. 1 Jan.-Mar. 2002 ·À≈à ß·√à ¬Ÿ ‡√‡π’ ¬¡„πª√–‡∑»‰∑¬ ‡Õ° “√Õâ “ßÕ‘ ß Ò. ¡»— °¥‘Ï ‚æ∏‘ — µ¬å , ÿ ¿— ∑√æß…å °√√≥‡≈¢“, ‰«¬æ®πå «√°π°. ·√à ¬Ÿ ‡√‡π’ ¬¡: √“¬ß“𠇻√…∞∏√≥’ «‘ ∑¬“. °Õ߇»√…∞∏√≥’ «‘ ∑¬“, °√¡∑√— 欓°√∏√≥’ ÚıÛÒ; ÛÚ: ˆ Àπâ “. Ú. øŸ ¬» ‚™µ‘ §≥“∑‘ ». °“√„™â ª√–‚¬™πå ®“° ·√à ¬Ÿ ‡√‡π’ ¬¡ ·≈–·À≈à ß·√à ¬Ÿ ‡√‡π’ ¬¡„πª√–‡∑» ‰∑¬. «“√ “√π‘ «‡§≈’ ¬√å ª√‘ ∑— »πå ÚıÙÒ; ÒÛ(Û-Ù): Ò˜-Úı. Abstract Uranium Sources in Thailand Fuyos Chotikanatis*, Payome Arunyakananda** *Department of Mineral Resources, Ministry of Industry, Bangkok, Thailand **Fellow, the Academy of Science, the Royal Institute, Thailand Uranium exploration was carried out in the early 1970s by the Department of Mineral Resources (DMR). Uranium occurrences were found in various geological environments including sandstone and granite host rocks. Sandstone-type mineralization occurs in Phu Wiang district of Khon Kaen province in northeastern Thailand. This area had been independently investigated by DMR. Ura- nium occurrences in granite associated with fluorite have also been discovered in Doi Tao district, Chiang Mai province and Muang district of Tak province in northern Thailand. These occurrences have received the most attention. Key words : uranium, Thailand ÒÙ „πÕ”‡¿Õµ–°— Ë «ªÉ “ ®— ßÀ«— ¥æ— ßß“ ·≈– æ∫∑Õ√å ‡∫Õ√å ‰πµå „πÕ”‡¿Õπ“ “√ ®— ßÀ«— ¥ ÿ √“…Æ√å ∏“π’ ·≈–„πÕ”‡¿Õ À“¥„À≠à ®— ßÀ«— ¥ ߢ≈“. µà Õ¡“®÷ ß ‰¥â ‡√‘ Ë ¡¡’ °“√ ”√«®æ∫·√à ¬Ÿ ‡√‡π’ ¬¡ „πÀ‘ π∑√“¬∑’Ë Õ”‡¿Õ¿Ÿ ‡«’ ¬ß ®— ßÀ«— ¥ ¢Õπ·°à π ·≈–·√à ¬Ÿ ‡√‡π’ ¬¡„𠓬·√à ø≈Ÿ ÕÕ‰√µå ∑’Ë ‡°‘ ¥√à «¡°— ∫À‘ π·°√π‘ µ ∑“ß¿“§‡Àπ◊ Õ¢Õߪ√–‡∑»‰∑¬. °“√ ”√«®·√à ¬Ÿ ‡√‡π’ ¬¡∑’Ë ºà “π¡“ ¬— ߉¡à ‰¥â ∑”°“√ ”√«®√“¬≈–‡Õ’ ¬¥‡æ’ ¬ß æÕ ‚Õ°“ ∑’Ë ®–æ∫·À≈à ß·√à ¬Ÿ ‡√‡π’ ¬¡ „πÀ‘ π∑√“¬·≈–„πÀ‘ π·°√π‘ µ¬— ß¡’ ¡“°.