地学前缘 ›› 2025, Vol. 32 ›› Issue (1): 50-60.DOI: 10.13745/j.esf.sf.2024.10.35
柳青青(), 王学求*(
), 张必敏, 周建, 王玮, 刘汉粮, 刘东盛, 周怡宁, 常婵
收稿日期:
2024-08-15
修回日期:
2024-10-10
出版日期:
2025-01-25
发布日期:
2025-01-15
通信作者:
*王学求(1962—),男,博士,研究员,主要从事应用地球化学和全球地球化学基准研究。 E-mail: wxueqiu@mail.cgs.gov.cn
作者简介:
柳青青(1986—),女,硕士,高级工程师,主要从事应用地球化学和全球地球化学基准研究。 E-mail: lqingqing@mail.cgs.gov.cn
基金资助:
LIU Qingqing(), WANG Xueqiu*(
), ZHANG Bimin, ZHOU Jian, WANG Wei, LIU Hanliang, LIU Dongsheng, ZHOU Yining, CHANG Chan
Received:
2024-08-15
Revised:
2024-10-10
Online:
2025-01-25
Published:
2025-01-15
摘要:
硼是一种新兴战略矿产,在现代高新技术产业中应用广泛。近年来,硼的需求持续上升,硼矿资源勘查也日益受到重视。本文依托中国地球化学基准值计划所采集的3 380件汇水域深层土壤数据,提供了全国B元素地球化学分布和异常特征。全国汇水域土壤深层样品B平均含量为46.4 μg/g,B整体上具有南高北低、连片分布的特点,可划分为5个地球化学分区,分别为东北与内蒙古东部地区(Ⅰ)、西北部地区(Ⅱ)、华北地区(Ⅲ)、青藏地区(Ⅳ)和南方地区(Ⅴ)。以B含量70.9和52.4 μg/g(累频85%)分别作为南北方异常下限,共圈定出37个B地球化学异常,在全国圈定10个地球化学省和9个小规模异常。根据B异常空间分布,结合地质背景和硼矿床分布,进一步划分出9个成矿远景区,建议加大盐湖型硼矿的找矿勘查力度,并将硬岩(海相沉积)型硼矿作为下一步勘查目标。
中图分类号:
柳青青, 王学求, 张必敏, 周建, 王玮, 刘汉粮, 刘东盛, 周怡宁, 常婵. 中国土壤硼地球化学异常特征与找矿远景区预测[J]. 地学前缘, 2025, 32(1): 50-60.
LIU Qingqing, WANG Xueqiu, ZHANG Bimin, ZHOU Jian, WANG Wei, LIU Hanliang, LIU Dongsheng, ZHOU Yining, CHANG Chan. Characteristics of boron geochemical anomalies and prediction of boron resource potential in China[J]. Earth Science Frontiers, 2025, 32(1): 50-60.
测试指标 | 样品处理方法 | 分析方法 | 检出限/(mg·kg-1) | 报出率/% | 合格率/% | ||
---|---|---|---|---|---|---|---|
标准物质 | 密码样 | 重复样 | |||||
B | 粉末电极 | ES | 2 | 100 | 99.7 | 98.2 | 94.9 |
表1 硼元素分析方法与质量控制结果
Table 1 Boron analysis method and quality control results
测试指标 | 样品处理方法 | 分析方法 | 检出限/(mg·kg-1) | 报出率/% | 合格率/% | ||
---|---|---|---|---|---|---|---|
标准物质 | 密码样 | 重复样 | |||||
B | 粉末电极 | ES | 2 | 100 | 99.7 | 98.2 | 94.9 |
岩类 | 岩性 | 样品数/件 | 中位值/ (μg·g-1) | 算术平均值/ (μg·g-1) | 岩类 | 岩性 | 样品数/件 | 中位值/ (μg·g-1) | 算术平均值/ (μg·g-1) |
---|---|---|---|---|---|---|---|---|---|
侵 入 岩 | 平均 | 2 634 | 5 | 12 | 沉 积 岩 | 钙质泥质岩 | 174 | 63 | 70 |
酸性岩 | 2 077 | 5 | 11 | 泥质岩 | 712 | 77 | 93 | ||
中性岩 | 340 | 7 | 15 | 石灰岩 | 1 309 | 1 | 9 | ||
基性岩 | 164 | 6 | 9 | 白云岩 | 441 | 3 | 10 | ||
超基性岩 | 53 | 12 | 45 | 泥灰岩 | 49 | 26 | 38 | ||
火 山 岩 | 平均 | 1 467 | 7 | 14 | 硅质岩 | 68 | 18 | 31 | |
玄武岩 | 238 | 4 | 11 | 冰碛岩 | 5 | 15 | 15 | ||
安山岩 | 279 | 6 | 11 | 变 质 岩 | 平均 | 1 806 | 25 | 42 | |
流纹岩 | 378 | 7 | 13 | 板岩 | 525 | 57 | 65 | ||
火山碎屑岩 | 88 | 7 | 13 | 千枚岩 | 150 | 57 | 65 | ||
凝灰岩 | 432 | 9 | 18 | 片岩 | 380 | 27 | 53 | ||
粗面岩 | 43 | 7 | 10 | 片麻岩 | 289 | 5 | 13 | ||
沉 积 岩 | 平均 | 6 208 | 24 | 39 | 变粒岩 | 119 | 6 | 18 | |
石英砂岩 | 221 | 20 | 30 | 麻粒岩 | 4 | 5 | 5 | ||
长石石英砂岩 | 888 | 30 | 38 | 斜长角闪岩 | 88 | 6 | 8 | ||
长石砂岩 | 458 | 31 | 44 | 大理岩 | 106 | 2 | 7 | ||
砂岩 | 1 844 | 34 | 44 | 石英岩 | 75 | 13 | 26 | ||
粉砂质泥质岩 | 106 | 52 | 60 | 汇水区表层土壤 | 3 382 | 43 | 50 |
表2 中国不同岩性和介质中B含量值
Table 2 Concentration of boron in different lithologies and media of China
岩类 | 岩性 | 样品数/件 | 中位值/ (μg·g-1) | 算术平均值/ (μg·g-1) | 岩类 | 岩性 | 样品数/件 | 中位值/ (μg·g-1) | 算术平均值/ (μg·g-1) |
---|---|---|---|---|---|---|---|---|---|
侵 入 岩 | 平均 | 2 634 | 5 | 12 | 沉 积 岩 | 钙质泥质岩 | 174 | 63 | 70 |
酸性岩 | 2 077 | 5 | 11 | 泥质岩 | 712 | 77 | 93 | ||
中性岩 | 340 | 7 | 15 | 石灰岩 | 1 309 | 1 | 9 | ||
基性岩 | 164 | 6 | 9 | 白云岩 | 441 | 3 | 10 | ||
超基性岩 | 53 | 12 | 45 | 泥灰岩 | 49 | 26 | 38 | ||
火 山 岩 | 平均 | 1 467 | 7 | 14 | 硅质岩 | 68 | 18 | 31 | |
玄武岩 | 238 | 4 | 11 | 冰碛岩 | 5 | 15 | 15 | ||
安山岩 | 279 | 6 | 11 | 变 质 岩 | 平均 | 1 806 | 25 | 42 | |
流纹岩 | 378 | 7 | 13 | 板岩 | 525 | 57 | 65 | ||
火山碎屑岩 | 88 | 7 | 13 | 千枚岩 | 150 | 57 | 65 | ||
凝灰岩 | 432 | 9 | 18 | 片岩 | 380 | 27 | 53 | ||
粗面岩 | 43 | 7 | 10 | 片麻岩 | 289 | 5 | 13 | ||
沉 积 岩 | 平均 | 6 208 | 24 | 39 | 变粒岩 | 119 | 6 | 18 | |
石英砂岩 | 221 | 20 | 30 | 麻粒岩 | 4 | 5 | 5 | ||
长石石英砂岩 | 888 | 30 | 38 | 斜长角闪岩 | 88 | 6 | 8 | ||
长石砂岩 | 458 | 31 | 44 | 大理岩 | 106 | 2 | 7 | ||
砂岩 | 1 844 | 34 | 44 | 石英岩 | 75 | 13 | 26 | ||
粉砂质泥质岩 | 106 | 52 | 60 | 汇水区表层土壤 | 3 382 | 43 | 50 |
取样 层位 | 样品数/ 件 | 最小值/ (μg·g-1) | 2.5%/ (μg·g-1) | 15%/ (μg·g-1) | 25%/ (μg·g-1) | 50%/ (μg·g-1) | 75%/ (μg·g-1) | 85%/ (μg·g-1) | 97.5%/ (μg·g-1) | 最大值/ (μg·g-1) | 算数平均值/ (μg·g-1) | 几何平均值/ (μg·g-1) |
---|---|---|---|---|---|---|---|---|---|---|---|---|
表层 | 3 382 | 0.8 | 11.4 | 23.6 | 29.9 | 43.4 | 61.4 | 74.8 | 118.0 | 1 000.0 | 50.1 | 41.8 |
深层 | 3 380 | 1.9 | 8.7 | 20.1 | 26.4 | 40.5 | 58.5 | 70.9 | 111.0 | 1 000.0 | 46.4 | 37.9 |
表3 全国汇水域沉积物硼含量统计表
Table 3 Descriptive statistics of boron concentration in top and deep sediment/alluvial soil of China
取样 层位 | 样品数/ 件 | 最小值/ (μg·g-1) | 2.5%/ (μg·g-1) | 15%/ (μg·g-1) | 25%/ (μg·g-1) | 50%/ (μg·g-1) | 75%/ (μg·g-1) | 85%/ (μg·g-1) | 97.5%/ (μg·g-1) | 最大值/ (μg·g-1) | 算数平均值/ (μg·g-1) | 几何平均值/ (μg·g-1) |
---|---|---|---|---|---|---|---|---|---|---|---|---|
表层 | 3 382 | 0.8 | 11.4 | 23.6 | 29.9 | 43.4 | 61.4 | 74.8 | 118.0 | 1 000.0 | 50.1 | 41.8 |
深层 | 3 380 | 1.9 | 8.7 | 20.1 | 26.4 | 40.5 | 58.5 | 70.9 | 111.0 | 1 000.0 | 46.4 | 37.9 |
图1 中国硼深层土壤含量、地球化学分区与硼成矿远景区
Fig.1 Distribution of boron concentrations in deep soils, and boron geochemical zones and metallogenic prospective areas of China
异常区 编号 | 异常点 个数/个 | 面积S/ km2 | 异常下限T/ (μg·g-1) | 算数平均值X/ (μg·g-1) | 背景值(总体 中位值)B/ (μg·g-1) | 极大值Max/ (μg·g-1) | 异常衬度 X/T | 异常强度 X/B | 面金属量 X×S/ (μg·g-1·km2) |
---|---|---|---|---|---|---|---|---|---|
B1 | 3 | 4 152 | 52.4 | 69.6 | 34.2 | 84.2 | 1.33 | 2.04 | 288 979 |
B2 | 1 | 4 340 | 52.4 | 138.0 | 34.2 | 138.0 | 2.63 | 4.04 | 598 920 |
B3 | 10 | 24 264 | 52.4 | 85.0 | 34.2 | 213.0 | 1.62 | 2.48 | 2 062 440 |
B4 | 5 | 13 926 | 52.4 | 81.5 | 34.2 | 115.0 | 1.56 | 2.38 | 1 134 969 |
B5 | 1 | 4 074 | 52.4 | 84.6 | 34.2 | 84.6 | 1.61 | 2.47 | 344 660 |
B6 | 16 | 63 701 | 52.4 | 95.0 | 34.2 | 299.0 | 1.81 | 2.78 | 6 051 595 |
B7 | 2 | 4 443 | 52.4 | 78.8 | 34.2 | 103.0 | 1.50 | 2.30 | 350 108 |
B8 | 20 | 95 665 | 52.4 | 69.1 | 34.2 | 97.9 | 1.32 | 2.02 | 6 610 452 |
B9 | 11 | 53 949 | 52.4 | 67.6 | 34.2 | 80.4 | 1.29 | 1.98 | 3 646 952 |
B10 | 5 | 12 836 | 70.9 | 90.5 | 40.5 | 111.0 | 1.28 | 2.23 | 1 161 658 |
B11 | 4 | 20 653 | 70.9 | 115.0 | 40.5 | 168.0 | 1.63 | 2.84 | 2 375 095 |
B12 | 4 | 17 838 | 70.9 | 89.0 | 40.5 | 100.0 | 1.25 | 2.20 | 1 587 582 |
B13 | 43 | 153 857 | 70.9 | 116.0 | 40.5 | 267.0 | 1.64 | 2.86 | 17 847 412 |
B14 | 8 | 42 123 | 70.9 | 96.2 | 40.5 | 114.0 | 1.36 | 2.38 | 4 052 233 |
B15 | 8 | 48 577 | 70.9 | 101.0 | 40.5 | 125.0 | 1.42 | 2.49 | 4 906 277 |
B16 | 7 | 23 621 | 70.9 | 94.2 | 40.5 | 111.0 | 1.33 | 2.33 | 2 225 098 |
B17 | 20 | 54 128 | 70.9 | 96.5 | 40.5 | 132.0 | 1.36 | 2.38 | 5 223 352 |
B18 | 6 | 17 043 | 70.9 | 94.5 | 40.5 | 164.0 | 1.33 | 2.33 | 1 610 564 |
B19 | 1 | 1 770 | 70.9 | 143.0 | 40.5 | 143.0 | 2.01 | 3.53 | 253 110 |
B20 | 2 | 6 000 | 70.9 | 83.2 | 40.5 | 91.6 | 1.17 | 2.05 | 499 200 |
B21 | 4 | 10 402 | 70.9 | 89.0 | 40.5 | 101.0 | 1.26 | 2.20 | 925 778 |
B22 | 5 | 8 833 | 70.9 | 86.3 | 40.5 | 105.0 | 1.22 | 2.13 | 762 288 |
B23 | 13 | 47 277 | 70.9 | 87.0 | 40.5 | 137.0 | 1.23 | 2.15 | 4 113 099 |
B24 | 4 | 19 949 | 70.9 | 106.0 | 40.5 | 128.0 | 1.50 | 2.62 | 2 114 594 |
B25 | 20 | 69 081 | 70.9 | 90.2 | 40.5 | 138.0 | 1.27 | 2.23 | 6 231 106 |
B26 | 3 | 6 781 | 70.9 | 80.7 | 40.5 | 83.7 | 1.14 | 1.99 | 547 227 |
B27 | 14 | 42 922 | 70.9 | 96.3 | 40.5 | 138.0 | 1.36 | 2.38 | 4 133 389 |
B28 | 23 | 102 957 | 70.9 | 101.0 | 40.5 | 176.0 | 1.43 | 2.49 | 10 398 657 |
B29 | 24 | 96 651 | 70.9 | 107.0 | 40.5 | 239.0 | 1.51 | 2.64 | 10 341 657 |
B30 | 12 | 48 669 | 70.9 | 95.2 | 40.5 | 133.0 | 1.34 | 2.35 | 4 633 289 |
B31 | 19 | 55 019 | 70.9 | 136.0 | 40.5 | 853.0 | 1.92 | 3.36 | 7 482 584 |
B32 | 18 | 66 062 | 70.9 | 150.0 | 40.5 | 1 000.0 | 2.12 | 3.70 | 9 909 300 |
B33 | 13 | 26 653 | 70.9 | 103.0 | 40.5 | 131.0 | 1.46 | 2.54 | 2 745 259 |
B34 | 14 | 51 440 | 70.9 | 177.0 | 40.5 | 1 000.0 | 2.50 | 4.37 | 9 104 880 |
B35 | 10 | 37 283 | 70.9 | 103.0 | 40.5 | 136.0 | 1.45 | 2.54 | 3 840 149 |
B36 | 1 | 6 426 | 70.9 | 265.0 | 40.5 | 265.0 | 3.73 | 6.54 | 1 702 890 |
B37 | 2 | 6 587 | 70.9 | 269.0 | 40.5 | 309.0 | 3.80 | 6.64 | 1 771 903 |
表4 中国硼元素地球化学异常统计参数
Table 4 Descriptive statistical parameters of boron geochemical anomalies of China
异常区 编号 | 异常点 个数/个 | 面积S/ km2 | 异常下限T/ (μg·g-1) | 算数平均值X/ (μg·g-1) | 背景值(总体 中位值)B/ (μg·g-1) | 极大值Max/ (μg·g-1) | 异常衬度 X/T | 异常强度 X/B | 面金属量 X×S/ (μg·g-1·km2) |
---|---|---|---|---|---|---|---|---|---|
B1 | 3 | 4 152 | 52.4 | 69.6 | 34.2 | 84.2 | 1.33 | 2.04 | 288 979 |
B2 | 1 | 4 340 | 52.4 | 138.0 | 34.2 | 138.0 | 2.63 | 4.04 | 598 920 |
B3 | 10 | 24 264 | 52.4 | 85.0 | 34.2 | 213.0 | 1.62 | 2.48 | 2 062 440 |
B4 | 5 | 13 926 | 52.4 | 81.5 | 34.2 | 115.0 | 1.56 | 2.38 | 1 134 969 |
B5 | 1 | 4 074 | 52.4 | 84.6 | 34.2 | 84.6 | 1.61 | 2.47 | 344 660 |
B6 | 16 | 63 701 | 52.4 | 95.0 | 34.2 | 299.0 | 1.81 | 2.78 | 6 051 595 |
B7 | 2 | 4 443 | 52.4 | 78.8 | 34.2 | 103.0 | 1.50 | 2.30 | 350 108 |
B8 | 20 | 95 665 | 52.4 | 69.1 | 34.2 | 97.9 | 1.32 | 2.02 | 6 610 452 |
B9 | 11 | 53 949 | 52.4 | 67.6 | 34.2 | 80.4 | 1.29 | 1.98 | 3 646 952 |
B10 | 5 | 12 836 | 70.9 | 90.5 | 40.5 | 111.0 | 1.28 | 2.23 | 1 161 658 |
B11 | 4 | 20 653 | 70.9 | 115.0 | 40.5 | 168.0 | 1.63 | 2.84 | 2 375 095 |
B12 | 4 | 17 838 | 70.9 | 89.0 | 40.5 | 100.0 | 1.25 | 2.20 | 1 587 582 |
B13 | 43 | 153 857 | 70.9 | 116.0 | 40.5 | 267.0 | 1.64 | 2.86 | 17 847 412 |
B14 | 8 | 42 123 | 70.9 | 96.2 | 40.5 | 114.0 | 1.36 | 2.38 | 4 052 233 |
B15 | 8 | 48 577 | 70.9 | 101.0 | 40.5 | 125.0 | 1.42 | 2.49 | 4 906 277 |
B16 | 7 | 23 621 | 70.9 | 94.2 | 40.5 | 111.0 | 1.33 | 2.33 | 2 225 098 |
B17 | 20 | 54 128 | 70.9 | 96.5 | 40.5 | 132.0 | 1.36 | 2.38 | 5 223 352 |
B18 | 6 | 17 043 | 70.9 | 94.5 | 40.5 | 164.0 | 1.33 | 2.33 | 1 610 564 |
B19 | 1 | 1 770 | 70.9 | 143.0 | 40.5 | 143.0 | 2.01 | 3.53 | 253 110 |
B20 | 2 | 6 000 | 70.9 | 83.2 | 40.5 | 91.6 | 1.17 | 2.05 | 499 200 |
B21 | 4 | 10 402 | 70.9 | 89.0 | 40.5 | 101.0 | 1.26 | 2.20 | 925 778 |
B22 | 5 | 8 833 | 70.9 | 86.3 | 40.5 | 105.0 | 1.22 | 2.13 | 762 288 |
B23 | 13 | 47 277 | 70.9 | 87.0 | 40.5 | 137.0 | 1.23 | 2.15 | 4 113 099 |
B24 | 4 | 19 949 | 70.9 | 106.0 | 40.5 | 128.0 | 1.50 | 2.62 | 2 114 594 |
B25 | 20 | 69 081 | 70.9 | 90.2 | 40.5 | 138.0 | 1.27 | 2.23 | 6 231 106 |
B26 | 3 | 6 781 | 70.9 | 80.7 | 40.5 | 83.7 | 1.14 | 1.99 | 547 227 |
B27 | 14 | 42 922 | 70.9 | 96.3 | 40.5 | 138.0 | 1.36 | 2.38 | 4 133 389 |
B28 | 23 | 102 957 | 70.9 | 101.0 | 40.5 | 176.0 | 1.43 | 2.49 | 10 398 657 |
B29 | 24 | 96 651 | 70.9 | 107.0 | 40.5 | 239.0 | 1.51 | 2.64 | 10 341 657 |
B30 | 12 | 48 669 | 70.9 | 95.2 | 40.5 | 133.0 | 1.34 | 2.35 | 4 633 289 |
B31 | 19 | 55 019 | 70.9 | 136.0 | 40.5 | 853.0 | 1.92 | 3.36 | 7 482 584 |
B32 | 18 | 66 062 | 70.9 | 150.0 | 40.5 | 1 000.0 | 2.12 | 3.70 | 9 909 300 |
B33 | 13 | 26 653 | 70.9 | 103.0 | 40.5 | 131.0 | 1.46 | 2.54 | 2 745 259 |
B34 | 14 | 51 440 | 70.9 | 177.0 | 40.5 | 1 000.0 | 2.50 | 4.37 | 9 104 880 |
B35 | 10 | 37 283 | 70.9 | 103.0 | 40.5 | 136.0 | 1.45 | 2.54 | 3 840 149 |
B36 | 1 | 6 426 | 70.9 | 265.0 | 40.5 | 265.0 | 3.73 | 6.54 | 1 702 890 |
B37 | 2 | 6 587 | 70.9 | 269.0 | 40.5 | 309.0 | 3.80 | 6.64 | 1 771 903 |
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