Dilution can best be defined as the proportion of waste tonnage to the total weight of ore and waste in each block. Predicting the internal dilution based on geological boundaries of waste and ore in each block can help engineers to develop more reliable long-term planning designs in mining activities. This paper presents a method to calculate the geological internal dilution in each block and ...

24 25 Chemical weathering and mechanical erosion are first order processes of long-term 26 tropical morphogenesis, which is still poorly deciphered for lack of time constraints. We 27 address this issue by laser-probe 39 Ar40 Ar dating of generations of cryptomelane [K128 2Mn8O16, nH2O] from the manganese ore deposit of Tambao in northern Burkina Faso. This 29 Mn deposit results from the superg...

the gheshlagh bauxite deposit is located 110 km southeast of gorgan. the deposit has been developed as a stratiform horizon with more than 2 km length and a thickness of about 25 m along the contact of ruteh and elika carbonate formations. textural analysis indicates both allochthonous and autochtonous origins for the bauxites. bohemite, diaspore, anatase, rutile, hematite, goethite, kaolinite,...

Introduction: The Zhangjiapingzi gold deposit, located at the western margin of Yangtze Craton and controlled by Jinhe-Chenghai deep fault, is a newly discovered super-large deposit in Danba-Mianning metallogenic belt. ore bodies are hosted Middle Triassic (T 2 ) altered dolomite (Dm), have two types mineralization: rock type quartz vein type. Previous studies on this rare, especially ore-fluid...

The work aimed to develop a rational technology for processing ore from the Yoshlik deposit, taking into account solution of issues integrated use mineral raw materials and environmental protection, development technological scheme. To enrich combined gravity-flotation scheme was recommended, followed by sorption cyanidation pyrite concentrate. According results research on sample it revealed t...

The break-up of the supercontinent Rodinia in late Neoproterozoic led to formation Nanhua rift basin within South China Block. Datangpo-type manganese deposit, which developed basin, is one most important types deposits China. Although it widely accepted that deep sedimentary structures significantly affect ore system, relationship between and rifting process still unclear. origin layer remains...

Abstract The Ermakovo F–Be deposit, the largest Be deposit in Russia and one of world’s deposits, is located West Transbaikalia. ores are diverse their morphology composition; mostly there phenakite–bertrandite–fluorite metasomatites after limestones. origin mineralization related to stock leucocratic subalkali aegirine-bearing granites, age which corresponds 224–226 Ma. available 225.5–219 Ma ...

Abstract The purpose of the work was to analyze first stage UE “Dekhkanabad plant potassium fertilizers” find out reasons for decrease in efficiency process desliming sylvinite ore Tyubegatan deposit. It has been established that is due a content chloride and an increase insoluble residue ore, proportion weakly sludge carbonate sulfate minerals residue, compared with silicate minerals, differen...

Both uranous and uranyl minerals are present in the Centennial unconformity-type U deposit situated in the SW Athabasca Basin, Canada. At least two generations of uraninite are present (disseminated and massive), often strongly altered to coffinite, followed by minor fibrous coffinite forming in veins. Uranyl minerals, mostly uranophane with minor haiweeite precipitating in veins and in hand sa...

supergene oxidation-leaching and secondary sulfide enrichment in the sarcheshmeh porphyry cu-mo deposit generated a supergene profile to depths of 20 to 80 meters with oxide ore reserve about 22 mt. @1.08% cu and sulfides ore [email protected]% cu. geochemical distribution and behavior of trace metals associated with cu namely mo, au, and ag in the supergene profile of the sarcheshmeh were po...