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应用部分提取技术研究湘西地区新元古界—寒武系中锑和砷元素的存在相态表明,岩石中以可交换离子、与碳酸盐有关、与硫化物有关和赋存于硅酸盐矿物晶格中4种形式存在的锑元素分别占岩石中锑总量的18.65％、0.85％、31.41％和43.81％;砷则分别为7.05％、4.29％、56.11％和29.18％。呈易迁移相态存在的锑和砷分别为55.91％和67.45％。在含硫开放体系中,岩石中元素的淋滤率与其中易迁移相态所占百分数值呈正相关关系。这为该区存在锑、砷矿源层的认识提供了实验证据。
The application of partial extraction technology to study the presence of antimony and arsenic in the Neoproterozoic-Cambrian Xiangxi region shows that the rocks are exchangeable with ions, carbonate-related, sulfide-related and silicate The four kinds of antimony elements in the crystal lattices account for 18.65%, 0.85%, 31.41% and 43.81% of the total amount of antimony in rocks and 7.05%, 4.29%, 56.11% and 29.18% for arsenic, respectively. Antimony and arsenic present in the phase of easy migration are 55.91% and 67.45% respectively. In the sulfur-bearing open system, the leaching rate of elements in rocks is positively correlated with the percentage of the phase in which they are easily migrated. This provides evidence for the existence of antimony, arsenic source layer in the area.