From the geochemical behaviour of chromium,forming process of chromite,controlling mechanism of Al3＋ ,Fe3＋ on Cr3＋ , and mineral association characteristics of chromite ores, the factors controlling ore quality of chromite are discussed in the paper.
从铬的地球化学性状、铬铁矿的形成过程， Al3＋， Fe3＋对 Cr3＋的制约机制及矿石矿物共生组合特征讨论了控制铬铁矿矿石质量的因素，这一研究对评价矿石质量有重要意义。
The second-level indicator system involves the pisional risk evaluation indicators reflecting urban geoenvironmental background, geological hazard risk and geochemical frangibility, which main.
一级指标体系反映城市地质环境风险性分区评价指标;二级指标体系反映城市地质环境条件基础性、城市地质灾害危险性和城市地球化学脆弱性分区评价指标;三级指标体系反映城市地质环境基本组成元素的评价指标。
geochemical behaviour of elements
元素的地球化学性状
reconnaissance geochemical survey
普查性地球化学测量
geochemical character of the elements
元素的地球化学性质
radioisotope geochemistry
放射性同位素地球化学
areal geochemical anomaly
区域性地球化学异常
The earth can be pided into 3 concentric spherical layers according to the differences of physical and chemical properties.
根据物理性质和化学性质的差异，地球可分出3个同心圆状的圈层。
Geochemistry of Gneissic Alkaline Granites in Donghai County, Jiangsu Province, and Its Tectonic Significances
江苏东海片麻状碱性花岗岩的地球化学及其构造指示意义
Mineralogical and Geochemical Characteristics of Massive Sulfides in the Okinawa Through;
冲绳海槽块状硫化物的矿物学和地球化学特征
Present State, Problem and Countermeasure of Urban Environmental Geochemistry;
城市环境地球化学研究现状、问题和对策
Research and Orientation of Exploration Vegetation Geochemistry in China
我国勘查植物地球化学的研究现状及发展方向
Geochemistry Features on the Mineralization of Small Acidic Rock-body in the Dabie Mountain Area
大别山地区矿化中酸性小岩体地球化学特征
Researches on biogeochemical processes and nutrient cycling in karstic ecological systems,southwest China:A review
喀斯特生态系统生物地球化学过程与物质循环研究:重要性、现状与趋势
Human Settlements Risk Assessment from the Perspective of Geology Geochemistry Environment in Kangding County;
康定城地质地球化学与人居环境风险性评价
Geochemistry and genesis of mafic dikes from the coastal areas of Guangdong Province, China.
广东沿海地区基性岩脉地球化学及成因
Iron Isotope Geochemistry of Banded Iron Formations from Anshan-Benxi Area, NE China;
辽宁省鞍山—本溪地区条带状含铁建造的Fe同位素地球化学研究
Studies on Soil Geochemical Characteristics and the Status of Ecological Restoration of Iron Abandoned Land in Anshan, Liaoning Province
辽宁省鞍山铁矿废弃地土壤地球化学及生态恢复现状研究
Geology, mode of occurrence of gold and isotopic geochemistry of Chahansala gold deposit in West Tianshan, Xinjiang
新疆西天山查汗萨拉金矿地质、金赋存状态及同位素地球化学研究
Study on the Genesis and Geological and Geochemical Characteristics of Layered Migmatites in East Liaoning,China
辽东硼矿区层状混合岩的地质地球化学特征及其成因探讨