Several passive biosorption mechanisms of uranium such as complexation,redox,microprecipitation and ion exchange are discussed,and the trend of development is forecasted.
Mineral exploration made important progress in .coal, uranium, iron, gold, silver, copper, nickel, zinc, lead, antimony, tungsten, molybdenum, vanadium, kainite and characteristic non-metal.
This article discusses and summarizes uraniferous characteristics of paleochannel depositional systems based on depositional characteristics of fluvial systems and geochemical behaviour of uranium.
By using the approach of morphostructure and tectonic chronology analysis, neotectonic activity evidences and characteristics as well as its ralation to uranium mineralization were researched.
Generation of uranium was closely related to migration and escaping of natural gas and may be also relevant to hydrothermal solution activities during epigenesis period.
But an unexpected fact was noted: certain minerals( pitchblende, chalcolite, autunite) had a greater activity than might be expected on the basis of their uranium or thorium content.
A tax advantage is also available to holders of most depletive assets—those which are used up, or depleted, over a period of time—like oil, natural gas, uranium, or coal.