Besides, it is also indicated that there exist late stage middle-low temperature hydrothermal alterations during the mineralization process of the stockwork type ores, which made the ores enrich Cu, Bi, Se, Te and some precious metal elements.
(4) on the basis of study on ore-forming processes, it is discovered that short-term fluctuations of the major elements composition of Co-rich Mn crusts with time were controlled by Milankovitch cycles, that is the highest-order periods of eccentricity of earth orbit;
The Gacun deposit in Sichuan Province is a typical auriferous Ag-rich polymetallic deposit in the intrarifting zone developed in the Triassic Yidun Island-Arc, whose major ore-forming metallic elements such as Cu, Zn, Ph, Ag and An unexceptionally assume nonnormal distributions composed mostly of double or multiple parent bodies, suggesting the existence of more than two times of ore-forming processes.
Theory of orogenic gold deposit was put up. New evidence for magmatic and metamorphic hydrothermal metallogeny has been found, that is magmatic fluid exists more popularly during gold metallogenic process.
It is shown that the mineralization process is virtually accomplished within six months after implantation of a porous titanium article into the organism.
We have investigated the effects of three bisphosphonic pharmacological compounds (etidronate, alendronate and tiludronate) on this system which mimics the mineralization process of cartilage and woven bone.
It provides an interesting method to study the effects of pharmacological compounds on the mineralization process in bone and cartilage in a non cellular and protein-free model.
Effects of soil moisture and soil depth on nitrogen mineralization process under Mongolian pine plantations in Zhanggutai sandy
The factors influencing N mineralization process have to be studied further in these semiarid pine ecosystems.
The alkalinity type reflects the character of ore-forming processes.
The age of phosphatization and the Fe-Mn mineralization in the sediments from Pacific seamounts that young implies the dependence of these ore-forming processes on oceanic environments favorable for ore accumulation rather than on their age.
Detailed study shows that mantle-rooted fluids were involved in the ore-forming processes.
Ore zoning and dynamics of ore-forming processes of Yinshan polymetallic deposit in Dexing, Jiangxi
On the basis of the dynamics of ore-forming processes and applying computer numerical simulation technique, the mechanism of ore zoning is discussed and a concealed igneous body controlling ore deposition at depth of the Yinshan mine is predicted.
Deposit No. 302 is a large hydrothermal uranium deposit located in fault zones within granite. Pitchblende is the only primary uranium mineral, which is associated with quartz, fluorite, hematite and pyrite. This paper is chiefly to research the sources of ore-forming solution and uranium. It is concluded that although there were many kinds of sources of ore-forming solution and uranium, they were mainly derived from the late granitic magma.
The origin of the lead-zinc ore deposits in Yangliutang of Guangdong is similiar to that of the Fankou lead-zinc ore deposits in Guangdong.The features of geochemistry,the resourses of the ore-forming material,the processcs and depositional types of the mineralization of the ore deposits are studied and determined.A lot of