• 作者： 鄭華生; 林敬裕; 柯[火冏]輝
• 作者服務機構： Contribution from the National Tsing Hua University, Hsinchu, Taiwan
• 中文摘要： Radioactive minerals other than Hokutolite and monazite are unknown up to present in Taiwan. The hard green copperiferrous quartz found in north Taitung and collected by two field survey teams, exhibited measurable activity, the origin of which was found to be uranium. Activation analysis revealed that the content of uranium in these samples ranged between 0.002 and 0.035%. It was also found that uranium was accompanied with copper, and that inclusion of iron in the sample decreased the uranium content. The result will be of value in the understanding of the cause of concentration of uranium in quartz and its physical and chemical state in these samples. The content of uranium in talc and monazite concentrate was also determined.
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