Estimation of gold reserves and resources has been of interest to mining engineers and geologists for ages. The existence of outlier values shows the economic part of the deposits subject to the fact that don’t depend on the human or technical errors. The presence of these high values causes a pseudo dramatically increment in variance estimation of economical blocks when applying conventional m...

The ore mineralogy of a new promising target the Aldan–Stanovoy gold province—the Spokoininsky cluster—is considered. Gold mineralization is represented by volumetric, nonlinear type, unconventional for region; it related to elements fold structures and reverse fault in enclosing metamorphic basement rocks. Vein-disseminated sulfide–(pyrite)–quartz ores build up deposit-like bodies beresites fr...

Environmental protection has become the focus of world-wide research in the gold mining industry and favours the development of environmentaly sound processes, such as the Coal Gold Agglomeration (CGA) process, which is an alternative to existing gold processing methods, such as cyanidation and mercury amalgamation. The CGA process was developed and patented by the British Petroleum (BP) resear...

Controversy surrounds the genetic relationship between gold mineralization and magmatism, especially in deposits granite. Jiaodong Peninsula is leading province China, most are Mesozoic granites; moreover, debate on genesis persists. In eastern Jiaodong, Muping–Rushan belt produces mainly quartz–sulfide vein-type gold, Upper Jurassic Kunyushan granite Late Lower Cretaceous Sanfoshan wall rock. ...

The surface geochemistry techniques widely employed during the 1960’s to 1980’s are effective at discovering near-surface deposits, but are largely ineffective for exploring under deep cover or for deep extensions of known mineralisation in a near-mine environment. Instead, mineral explorers must focus their attention on rapidly aggregating and synthesising disparate data to build into holistic...

Levels of naturally occurring radioactive materials prior to processing of gold ore within and around the new eastern concession area of Perseus Mining (Ghana) Limited were carried out to ascertain the baseline radioactivity levels. The study was based on situ measurements of external gamma dose rate at 1 m above ground level as well as laboratory analysis by direct gamma spectrometry to quanti...

According to the Statistical Account of Scotland (Maconochie, 1792) the village of Leadhills in Lanarkshire contains the most famous and ancient lead mines in Scotland. They were included in a grant of lands to the monks of Newbattle Abbey in 1239 and, from a lawsuit soon afterwards, it is clear that the mines were in production about that date. Depending on demand and the price of lead they ha...

Radiotracer technique was used to measure the Residence Time Distribution (RTD) of material in 4 leach tanks at AngloGold Ashanti, Iduapriem gold processing plant. The investigation was conducted to determine the mean residence time and possible flow malfunctions in the tanks. The liquid phase of gold ore slurry was traced using I radiotracer which was instantaneously injected into the feed str...

Bio-oxidation of refractory sulfidic gold minerals has been applied at the commercial scale as a pre-treatment to improve yields and reduce chemical consumption during cyanidation. In this study, effect initial cell concentration on oxidation pyritic ore was evaluated with four aerated bioreactors 30 °C 10% pulp density pH maintained 1.4 NaOH. Results NaOH changes in soluble Fe S concentrations...