Lateritization
The nickel ore occurs in various forms, such as nickel silicate of the remaining/primary crust, and iron–nickel ore, redeposited or secondary-crust nickel-silicate crust ore. ... Many lateritic deposits have been buried by colluvium and alluvium. Despite these changes, the distribution of Au remains broadly similar to that of savanna ...
Nickel Laterite Ore Deposits: Weathered Serpentinites
Abstract. Nickel laterite ores account for over 60% of global nickel supply. They are the product of intensive deep weathering of serpentinites under humid tropical …
Geology, mineralogy, and chemistry of lateritic nickel-cobalt deposits …
In Western Australia, at Kalgoorlie, lateritic Ni/Co-bearing deposits with kaolinite associated to goethite were formed by the alteration of serpentinized dunite and peridotite [Elias et al., 1981 ...
Typology of the New Caledonian Ni-laterite deposits: from …
Abstract. SLN has a large nickel mining area in NC which is operated since c.a.1880. During the first decades, the exceptionally high Ni-saprolite (garnierite-bearing) has been hand-mined. However ...
Distribution, geology and development status of nickel deposits
Chen Baiyou, Liu Hongtao, Yang Ping, Sun Yuan. 2013. The basin metallogenic regularity of global Lateritic Nickel ore deposit[J]. Acta Geoscientica Sinica, 34(1): 202-206 (in Chinese with English abstract). Google Scholar. Chen Haoliu, Wu Shuibo, Fu Debin. 1993. Nickel Deposits[M]. Beijing: Geological Publishing House, 1 …
Options for Hydrometallurgical Treatment of Ni-Co Lateritic …
The large deposit of low-grade nickel ore Vardište in Bosnia Herzegovina is in close proximity to the largest Serbian Mokra Gora deposit; ... M. Leaching method selection for Çaldaǧ lateritic nickel ore by the analytic hierarchy process (AHP). Hydrometallurgy 2017, 171, 179–184. [Google Scholar]
Microbial Leaching for Recovery of Nickel and Cobalt from Lateritic Ore …
Goethite is the main iron bearing phase or host, which contains most of the nickel in the raw lateritic ore. Nickel laterites are becoming an increasingly important source of nickel and cobalt. 70% of the world's on shore nickel resources are laterite ores [16, 17]. Lateritic deposits are often located very close to the surface typically less ...
Leaching of a Turkish Lateritic Nickel Ore in Nitric Acid …
The lateritic nickel ore sample subjected to this experimental study was taken from Karaçam ore deposit (Eskişehir-Turkey) and contains 1.80% Ni, 23.90% Fe, 1.58% Mg and 0.034% Co. According to the mineralogical analysis of lateritic nickel ore samples, goethite, hematite, wustite, retgersite, gaspeite, quartz and clay type minerals were ...
Supergene Process
S.K. Haldar, in Platinum-Nickel-Chromium Deposits, 2017. 9.2.3 Lateritic Model. The lateritic model is a surficial/near-surficial weathering/oxidation system resulting from physicochemical phenomena. It causes concentration of ore materials (Ni–Cu–Co–PGEs, Al, Fe, etc.) by the action of paleoclimatic environment and occurs within the ...
Lateritic Bauxite Deposits – Our Largest Source …
Most of the world's aluminium is mined from lateritic bauxite deposits. The largest producer is Australia's Weipa Mine in northern Queensland, while other countries with large reserves include Guinea, …
Lateritic nickel ore deposits
Typical nickel laterite ore deposits are very large tonnage, low-grade deposits located close to the surface. They are typically in the range of 20 million tonnes and upwards (this being a contained resource of 200,000 tonnes of nickel at 1%) with some examples approaching a billion tonnes of material.
Rapid dehydroxylation of nickeliferous goethite in lateritic nickel ore
A method for extracting Ni and other metals from lateritic ores by means of shock heating has been investigated. Shock heating releases some of the metal from its goethitic host. Even though the transformation of pure goethite to hematite is known to occur via intermediate hydroxylated phases, the effect of other metals such as Ni …
Ni-Co Laterites─A Deposit Model
Co in a laterite deposit. The Nickel Mountain deposit in Riddle, Oregon is a hydrous Mg-silicate type Ni laterite, as are the deposits in New Caledonia, California, and North Carolina. Murrin Murrin, in Western Australia, is a classic clay ore Ni-Co laterite deposit. The Cawse deposit in Australia, as well as many of the deposits in Cuba, are ...
Lateritic, supergene rare earth element (REE) deposits
In southeastern China, lateritic REE deposits, known as ion-adsorption type deposits, have been the world's largest source of heavy REE (HREE). The lateritized upper parts of carbonatite ...
Reactive Transport Modeling Applied to Ni Laterite …
Two-dimensional coupled hydro-geochemical model for Ni laterite deposits is developed. Relationship of nickel distribution to …
Morphology, composition and dissolution of chromite in the …
The morphological and chemical composition of chromite in the partially-serpentinized harzburgite and oxide zone of two laterite profiles at the Goro lateritic nickel deposit, New Caledonia, were investigated to: (1) establish the melt conditions at the mantle-crust boundary during ophiolite formation, and (2) characterize the weathering of …
Ore deposits formed by weathering | SpringerLink
Abstract. Many types of mineral deposit form by weathering. For discussion in this chapter we have selected bauxite, nickel laterite and kaolin; we also describe supergene manganese and the supergene enrichment of sulphides. These mineral deposits are among the most important ores formed by weathering and supergene enrichment is one …
Geology and Economic Potential of Ni Deposits
Magmatic sulphide and laterite deposits are the two major sources of the nickel metal in the world. Although the sulphide deposits have been operated since …
Nickel laterite deposits – geological overview, resources …
ore deposits, but lesser known examples include lateritic gold deposits (e.g., Boddington in Western Australia) (Evans, 1993). Nickel laterites are the product of lateritisation of Mg-rich or ...
Nickel Laterite ore deposits: Weathered …
Dominique Cluzel. 2013, Elements, special issue "Serpentines" Vol. 9, 123-128. "Nickel laterite ores account for over 60% of global nickel supply. They are the product of intensive deep weathering of serpentinites under …
Geochemistry and Mineralogy of Ni-Co Laterite Deposits
Three Ni-Co lateritic deposits from New Caledonia were investigated. In each deposit, Sc is well correlated with Al 2 O 3. The slopes of deposit-scale Sc-Al 2 O 3 regression lines are remarkably controlled by the composition of enstatite from the parent peridotite. In all deposits, maximum Sc enrichment occurs in the yellow limonite, above …
Bioleaching of Lateritic Nickel Ores | SpringerLink
Despite nickel-bearing sulfide deposits having a large share of the world's nickel extraction, lateritic ore deposits contain more than 70% of the world's nickel …
Composition and origin of lateritic nickel ore at Tagaung …
The recently discovered lateritic nickel ore deposit on the summit area of the Tagaung Taung contains about 40 million DMT nickel-saprolite ore with approximately 2% Ni. The serpentinite massif is covered with a thick weathering mantle consisting of saprolite, limonite, and an allochthonous lateritic surface layer. The thickness, nickel content, and …
Nickel Laterites: A Review | SEG Discovery | GeoScienceWorld
The physical and chemical nature of a nickel laterite deposit is a function of many factors, including the composition of the parent rock, the tectonic setting, climate, topography (specifıcally, laterite morphology), and drainage. Nickel laterite ore is extracted using both selective and bulk mining methods in open cast mining operations.
Lateritic nickel deposits of Brazil | Mineralium Deposita
Many nickel deposits are known in Brazil, accounting for about 350 · 106 tons of ore with an average of 1.5% Ni. All are of the lateritic type. These deposits are scattered throughout the country, being rarer in the Northeastern Region and in the South, below 25 °S latitude. They are mainly associated with mafic-ultramafic massifs of large dimensions …
[PDF] THE LATERITIC ORE DEPOSITS OF BRAZIL | Semantic …
In Brazil, the same processes responsibleforthe formation of the thick lateritic mantle, which covers nearly 65 % of its territory, are also responsible for metal accumulation which forms, under special condition, the lateritic ore deposits. In the origin ofthose accumulation. the parent rock composition and/or the convergence of the biological and …
Laterite Ore
A typical laterite ore may contain approximately 1–1.5% Ni with 40–50% Fe existing in the form of goethite [ (FeNi)O⋅ (OH)⋅ n H 2 O]. Laterite ores contain up to 40% of free and combined moisture, which is removed in the reduction process ( Ray et al., 2014 ). Similar to copper extraction, nickel ores are first beneficiated to produce ...
LATERITIC DEPOSITS
Preamble. Nickel-cobalt lateritic deposits are residual concentrations formed by tropical-style weathering of ultramafic rocks. Lateritic deposits include a number of deposit sub-types that result from different geological, geomorphological and climatic conditions. Typically, a profile is developed with different zones.
Ni-Co Laterite Deposits of the World—Database and …
Ni-Co laterite deposits provide one of two major natural sources of nickel and cobalt. The economic importance of this deposit type expands in direct relation with …
Nickel Laterite Ore Deposits: Weathered Serpentinites
Abstract and Figures. Nickel laterite ores account for over 60% of global nickel supply. They are the product of intensive deep weathering of serpentinites under humid tropical conditions. Nickel ...