| 矿物热释氡找矿方法中氡的来源探讨 |
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| 引用本文： | 苏守田.矿物热释氡找矿方法中氡的来源探讨[J].铀矿地质,1985(2). |
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| 作者姓名： | 苏守田 |
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| 摘 要： | 本文探讨了矿物热释氡找矿中氡的来源问题。我们对七五二花岗岩中铀矿床的无矿及含矿花岗岩用闪烁射气法进行了各种温度间的矿物热释氡量的测定;用包裹体爆裂法进行了爆裂温度及相对爆裂次数的测定。通过实验发现,加热样品在包裹体爆裂以前,能释放出大部分氡,在包裹体大量爆裂的温度区间热释氧量反而很少。磨破包裹体放出氡后,再加热仍然有氡气释放出来。用包裹体中的铀含量计算出的氡量低于测定方法的灵敏度,无法测出,说明矿物热释氡量与包裹体无关。样品又做了化学铀分析和放射化学镭分析。明显看出热释氡量与铀、氡含量成正相关关系。各种实验均证明氧气不是来自包裹体,而是来源于整个矿物。
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| 关 键 词： | 矿物热释氡 氡的来源 闪烁射气法 包裹体 |
DISCUSSION ON THE SOURCE OF RADON IN URANIUM EXPLORATION METHOD USING RADON-RELEASED THERMAL EFFECT IN MINERALS |
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| Su Shoutian.DISCUSSION ON THE SOURCE OF RADON IN URANIUM EXPLORATION METHOD USING RADON-RELEASED THERMAL EFFECT IN MINERALS[J].Uranium Geology,1985(2). |
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| Authors: | Su Shoutian |
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| Institution: | Su Shoutian |
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| Abstract: | This paper considers the problem of the source of radon in uranium exploration method using radon-released thermal effect. In minerals by means of scintillation emanometry, we have carried out the measurement on radon content in minerals at various temperature in barren and ore-bearing granites of the granite-type uranium deposit No. 752, and inclusion decrepitation method has also been used to determine the temperature of decrepitation and its relative frequency. It was found from experiments that heated samples may release most of radon prior to inclusion decrepitation, radon released from thermal effect was, on the contrary, very little at temperature intervals of inclusion decrepitation on a large scale basis. When inclusions were ground after radon releasing, it would still release from inclusions after reheating. The radon content calculated from uranium content in inclusions is lower than the sensitivity of the determination method, so it is too difficult to be determined, indicating that the radon content released is not related to inclusions. Samples were determined by uranium chemical analysis and radium radiochemical analysis and it is obvious to note that the radon content released from thermal effect in minerals is positively correlated to the uranium and radium content. Various kinds of experiments suggest that radon is not derived from inclusions but from the whole mineral. |
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| Keywords: | Radon-released thermal effect in minerals Source of radon Scintillation emanometry Inclusion |
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