The Lateritic Nickel-Ore Deposits. Jean-Jacques Trescases. Chapter. 840 Accesses. 3 Citations. Abstract. Nickel belongs to the transition metal family and shows close …

This paper reviews the nature and genesis of nickel laterite mineralisation, and describes the relationship between deposit …

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 …

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 …

Lateritic nickel ore. Lateritization of ultramafic igneous rocks (serpentinite, dunite, or peridotite containing about 0.2-0.3 percent nickel) often results in a considerable nickel concentration. Two kinds of lateritic nickel ore need to be distinguished: ... Laterites are economically most important for ore deposits, such as bauxite.

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 ...

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 …

Two-dimensional coupled hydro-geochemical model for Ni laterite deposits is developed. Relationship of nickel distribution to …

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 ...

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 …

The SX-EW Method. SX-EW, or the Solvent Extraction – Electrowinning approach to lateritic ore beneficiation, is a hydrometallurgical method that relies on leaching, extractants, and electrowinning to produce nickel from ore. This process is often referred to as Leach Solvent Extraction – Electrowinning for its employment of a leaching step.

Their global distribution is shown in FIGURE 1. DEPOSIT CHARACTERISTICS Lateritic Regolith Nickel laterites constitute 60 to 70% of the world's Ni resources, but although they have been mined for about 140 years, until 2000 they accounted for less than 40% of global Ni production, the remainder being from sulfide ores.

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 …

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 ...

More than 200 million mt of ore have been identified in Burundi, and of these 29 million mt are in an area of about 1. 3 km**2 called the Buhinda High Grade Nickel Zone. The nickel deposits were ...

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 …

Nickel-cobalt (Ni-Co) laterite deposits are supergene enrichments of Ni±Co that form from intense chemical and mechanical weathering of ultramafic parent rocks. These regolith deposits typically ...

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.

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 …

Butt CRM, Cluzel D (2013) Nickel laterite ore deposits: weathered serpentinites. Elemets 9:123–128. Article Google Scholar Çağatay A, Altun Y, Arman B (1981) The mineralogy of Çaldağ (Manisa-Turgutlu) lateritic iron, nickel-cobalt deposit. Bull Miner Res Explor 95–96:82–96. Google Scholar

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 ...

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 ...

The latter results in increase of the nickel content of the saprolite located in the slope zones and topographic lows which further supports the concept of lateral Ni migration proposed by Quesnel et al. …

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 …

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 is...

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 ...

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-lateritic ore is the most common source of nickel in Brazil. The Niquelândia deposit, located in State of Goias, is one of the most famous deposits due to the large amounts of nickel associated with both oxidized and mainly silicated ores. The terms oxidized and silicated ores are used to specify two different ores formed …

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 …

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.