【摘要】 对相山铀矿床岩石、矿石中石英热释光的研究发现,热释光强度与其所在的岩性和其中的 U、Th、K 总量有关。总的趋势是 U、Th、K 总量增加,热释光强度显著降低;石英热释光辉光曲线上的峰形存在明显差异,岩石中石英热释光辉光曲线的峰形比较复杂,多数曲线呈双峰,且都是中温峰的相对强度比高温峰的相对强度低;矿石和近矿围岩中石英热释光辉光曲线都是双峰,且都是中温峰的相对强度比高温峰的相对强度高。这些差异可作为该矿床的找矿标志。在石英热释光辉光曲线上,任一特定峰温对相邻峰形存在一个叠加复合区间,其范围为特定峰温20℃左右。自岩浆冷却以后,该地区至少经历了五次大的热事件。对应的温度分别为250℃、288℃、310℃、335℃、350℃,表明该矿床是多次热事件叠加的结果。更多还原

【Abstract】 Thermoluminescence study of quartz from rocks and ores in the Xiangshan uranium deposit shows that both thermoluminescence intensity and kurtosis of quartz vary remarkably,which can be used as ore-prospecting criteria in this ore deposit.On the thermoluminescence curve of quartz, there exists a superimposed compounding interval of about±20℃ for any specific peak relative to the neighboring peak.Since the cooling of magma,the area has at least experienced five no- table thermal events with the corresponding temperature being 250℃,288℃,310℃,335℃ and 350℃ respectively,suggesting that the ore deposit was formed through superimposition of several thermal events.更多还原