Scholarlink

<p>The study explores uranium series disequilibrium in altered granites to evaluate uranium mineralization and its radiochronological implications. Disequilibrium occurs due to chemical fractionation and alpha-recoil mechanisms, affecting isotopic ratios (<sup>238</sup>U, <sup>234</sup>U, <sup>230</sup>Th, <sup>226</sup>Ra) and resource assessment. Gamma-ray spectrometry indicated varied radioactivity ratios <sup>234</sup>U/<sup>238</sup>U close to equilibrium (⁓1) and others deviating (0.85–1.08), revealing uranium mobilization and secondary mineralization processes. The ratios of <sup>238</sup>U/<sup>235</sup>U (21.97–26.91) vs. 21.7 imply alteration processes. These findings provide insights into the geochemical history and uranium migration within granites, aiding uranium resources evaluation and exploration by interpreting migration history and disequilibrium’s role in deposit accuracy.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Mineralogical investigation and environmental radioactivity risk of uranium mineralization from altered granites

  • 期刊论文

  • 发表日期：

    2025年4月5日

查看全文
  • Mahmoud R. Khattab,
  • Neveen S. Abed,
  • Mohamed H. E. Monged,
  • A. F. Tawfic,
  • Sherif A. Taalab,
  • Turki Kh. Faraj,
  • Mayeen Uddin Khandaker,
  • Mohamed Y. Hanfi

摘要

The study explores uranium series disequilibrium in altered granites to evaluate uranium mineralization and its radiochronological implications. Disequilibrium occurs due to chemical fractionation and alpha-recoil mechanisms, affecting isotopic ratios (238U, 234U, 230Th, 226Ra) and resource assessment. Gamma-ray spectrometry indicated varied radioactivity ratios 234U/238U close to equilibrium (⁓1) and others deviating (0.85–1.08), revealing uranium mobilization and secondary mineralization processes. The ratios of 238U/235U (21.97–26.91) vs. 21.7 imply alteration processes. These findings provide insights into the geochemical history and uranium migration within granites, aiding uranium resources evaluation and exploration by interpreting migration history and disequilibrium’s role in deposit accuracy.