Tellurium is a sort of scattered rare element on the earth.Its concentration is very low in earth's crust,only 1.0 ng/g.However,it has extremely high abunda
As a result of systematic study on heavy minerals in soils at city and town areas and their surroundings,cinnabar was discovered for the first time in areas of
【正】1 Introduction The Pingluoba brine,which characterized as high concentration with sodium,potassium,boron,lithium,and rubidium,possess great development va