γ能谱法在安徽皖南地区萤石矿勘查中的应用
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连相宇, 罗见兵
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Application of gamma-ray spectrum method in the exploration of fluorite deposits in southern Anhui Province, China
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LIAN Xiang-Yu, LUO Jian-Bing
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表1 不同岩石U、Th、K测量值统计
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Table 1 Statistical of U, Th and K measurement values for different geological bodies
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| 岩石 | w(K)/% | w(U)/10-6 | w(Th)/10-6 | 备注 | | 范围 | 平均值 | 范围 | 平均值 | 范围 | 平均值 | | 萤石矿石 | 0.7 ~ 1.3 | 1.1 | 0.8 ~ 2.1 | 1.7 | 0.7 ~ 4.3 | 3.3 | | | 花岗闪长岩 | 1.6 ~ 3.0 | 2.2 | 2.6 ~ 5.4 | 3.8 | 8.3 ~ 12.2 | 9.2 | | | 地表覆盖层(土壤) | 1.7 ~ 3.4 | 2.4 | 2.2 ~ 4.7 | 3.2 | 7.9 ~ 12.8 | 9.7 | | | 砂板岩[10] | 1.6 ~ 2.4 | 1.9 | 1.5 ~ 2.5 | 2.1 | 4.9 ~ 8.5 | 7.0 | | | 黄土或亚黏土[10] | 2.2 ~ 2.7 | 2.3 | 1.6 ~ 3.3 | 2.4 | 7.2 ~ 10.8 | 8.8 | | | 灰岩[11] | 2.8 ~ 4.9 | 3.6 | 2.8 ~ 5.5 | 3.9 | 14.8 ~ 54.7 | 28.5 | | | 酸性喷出岩[12] | 1.0 ~ 6.2 | 3.1 | 0.8 ~ 16.4 | 4.1 | 1.1 ~ 41.0 | 11.9 | | | 酸性侵入岩[12] | 0.1 ~ 7.6 | 3.1 | 0.1 ~ 30.0 | 4.1 | 0.1 ~ 253.1 | 25.7 | | | 中性侵入岩[12] | 0.1 ~ 6.2 | 2.1 | 0.1 ~ 23.4 | 3.2 | 6.4 ~ 106.0 | 12.2 | | | 化学沉积岩[12] | 0.02 ~ 8.4 | 0.6 | 0.0 ~ 26.7 | 3.6 | 0.03 ~ 132.0 | 14.9 | 包含碳酸盐岩 | | 碎屑沉积岩[12] | 0.01 ~ 9.7 | 1.5 | 0.1 ~ 80.0 | 4.8 | 0.22 ~ 362.0 | 12.4 | | | 变质火成岩[12] | 0.1 ~ 6.1 | 2.5 | 0.1 ~ 148.5 | 4.0 | 0.11 ~ 104.2 | 14.8 | | | 变质沉积岩[12] | 0.01 ~ 5.3 | 2.1 | 0.1 ~ 53.4 | 3.0 | 0.11 ~ 91.4 | 12.0 | |
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