Genesis of the Laterite Nickel (Hendro Purnomo) - Free download as Powerpoint Presentation (.ppt / .pptx), PDF File (.pdf), Text File (.txt) or view presentation slides online. Genesis of the Laterite Nickel (Hendro Purnomo)

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Feb 29, 2020· The various theories of ore genesis explain how the various types of mineral deposits form within the Earth's crust. Ore genesis theories are dependent on the mineral or commodity. ... The process of forming nickel laterite deposits is essentially similar to the formation of gold laterite deposits, except that ultramafic or mafic rocks are ...

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Physical Properties of Laterite. Physical properties of rocks are used to identify the type of rocks and to discover more about them. There are various physical properties of Laterite like Hardness, Grain Size, Fracture, Streak, Porosity, Luster, Strength etc which defines it.

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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 concentrated to over 1.0 wt% and is hosted in a variety of secondary oxides, hydrous Mg silicates and smectites.

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Nickel deposits are generally found in two forms, either as sulfide or laterite. Sulfide type nickel deposits are formed in essentially the same manner as platinum deposits. Nickel is a chalcophile element which prefers sulfides, so an ultramafic or mafic rock which has a sulfide phase in the magma may form nickel …

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Phases TransformaTIon of nIckel laTerITIc ore durIng dehydraTIon Q. h a " a X. l # *School of Materials Science and Engineering, Chongqing University, China, 400044 Received 14 April 2010; accepted 25 November 2010 Abstract The high magnesium nickel laterite ore need first be dehydrated if it is treated by the pirometallurgical means.

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Nickel laterites have been variously classified in the literature, but it is acknowledged that there are three principal deposit groupings based on the dominant mineral phases in the profile: oxide, hydrous Mg silicate, and clay silicate types (Brand et al., 1998).

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Ore Genesis. Nickeliferous laterite is formed by weathering and oxidation of ultramafic rocks which preferentially enriches the laterite (a residual regolith material) in nickel at the expense of magnesium and silica which are removed by dissolution in the environment.. Lateritization of ultramafic igneous rocks (serpentinite, dunite, or peridotite containing about 02 - 0.3% nickel) often ...

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Nickel Laterites: The World's Largest Source of Nickel ...

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Lateritic nickel ore deposits are surficial, weathered rinds formed on ultramafic rocks.They comprise 73% of the continental world nickel resources and will be in the future the dominant source for the winning of nickel.. Genesis and types of nickel laterites . Lateritic nickel ores formed by intensive tropical weathering of ultramafic rocks above all serpentinite s which consist largely of ...

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Nickel laterite deposits – geological overview, resources and exploitation. Giant Ore Deposit: Characteristics, Genesis and Exploration, 205–220. Google Scholar

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Genesis of nickel laterites and bauxites in Greece during the Jurassic and Cretaceous, and their relation to ultrabasic parent rocks. Ore Geol. Rev., 2 : 359--404. Nickel laterites and bauxites, including their proposed parent rocks from the Mesozoic of Greece, have been investigated by means of mineralogical and geochemical methods.

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Nickel deposits are generally found in two forms, either as sulfide or laterite. Sulfide type nickel deposits are formed in essentially the same manner as platinum deposits. Nickel is a chalcophile element which prefers sulfides, so an ultramafic or mafic rock which has a sulfide phase in the magma may form nickel …

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Nickel laterite deposits of the northern part of the Great Dyke Geomorphology, regolith stratigraphy, geochemistry, mineralogy, distribution and genesis Martin Prendergast Independent geological consultant Acknowledgements: African Consolidated Resources Limited 1 .

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Laterite is a soil and rock type rich in iron and aluminium and is commonly considered to have formed in hot and wet tropical areas. Nearly all laterites are of rusty-red coloration, because of high iron oxide content. They develop by intensive and prolonged weathering of the underlying parent rock.Tropical weathering (laterization) is a prolonged process of chemical weathering which produces ...

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Jan 12, 2017· The genesis of the largest deposits is favoured by various factors, including long-lived magmatic-hydrothermal activity, high concentrations of "ore ingredients" (i.e., copper and sulphur) in ...

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From Wikipedia, the free encyclopedia. The various theories of ore genesis explain how the various types of mineral deposits form within the Earth's crust.Ore genesis theories are very dependent on the mineral or commodity.. Ore genesis theories generally involve three components: source, transport or conduit, and trap.

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Nickel-cobalt (Ni-Co) laterite deposits are an important source of nickel (Ni). Currently, there is a decline in magmatic Ni-bearing sulfide lode deposit resources (Dalvi and others, 2004). New efforts to develop an alternative source of Ni, particularly with improved metallurgy processes, make the Ni-Co

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Dec 01, 2005· Gowaikar AS (1972) Influence of moisture on the genesis of laterite soils in South India, II. Clay composition and mineralogy. Journal of the Indian Society of Soil Science 20, 59-66. Hsu Pa Ho (1989) Aluminium hydroxides and oxyhydroxides. In 'Minerals in soil environments'. (Eds JB Dixon, SB Weed) pp. 331-378.

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Laterite is a soil and rock type rich in iron and aluminium, and is commonly considered to have formed in hot and wet tropical areas.Nearly all laterites are of rusty-red coloration, because of high iron oxide content. They develop by intensive and long-lasting weathering of the underlying parent rock.Tropical weathering (laterization) is a prolonged process of chemical weathering which ...

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TY - JOUR. T1 - Genesis and mineralogical classification of Ni-laterites, Oman Mountains. AU - Al-Khirbash, Salah. PY - 2015/3/1. Y1 - 2015/3/1. N2 - The laterite profiles investigated in the present study developed after the emplacement of a slab of oceanic crust and upper mantle sequence (the Semail ophiolite) onto the East Arabian margin during the Late Cretaceous.

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Reading: Ore Genesis. ... The process of forming nickel laterite deposits is essentially similar to the formation of gold laterite deposits, except that ultramafic or mafic rocks are required. Generally nickel laterites require very large olivine-bearing ultramafic intrusions. Minerals formed in laterite nickel deposits include gibbsite.

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This paper reviews the nature and genesis of nickel laterite mineralisation, and describes the relationship between deposit characteristics (both geological and non-geological) and the successful ...

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Genesis and types of nickel laterites. Lateritic nickel ores formed by intensive tropical weathering of olivine-rich ultramafic rocks such as dunite, peridotite and komatiite and their serpentinized derivatives, serpentinite which consist largely of the nickel ores formed by intensive tropical weathering of olivine-rich ultramafic rocks such as dunite

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The Ural-Kazakhstan province hosts Mesozoic nickel-cobalt laterite deposits with Mineral Resources containing 0.2 to 3 Mt of nickel metal. The deposits occur within zones of ultramafic massifs of various ages and genesis. These deposits were silicified in Cenozoic time under cover of …

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Lateritic nickel ore deposits - Wikipedia. Lateritic nickel ore deposits are surficial, weathered rinds formed on ultramafic rocks. They account for 73% of the continental world nickel resources and will be in the future the dominant source for the mining of nickel. Genesis and types of nickel laterites. Lateritic nickel ...

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Lateritic nickel ore deposits are surficial, weathered rinds formed on ultramafic rocks. They account for 73% of the continental world nickel resources and will be in the future the dominant source for the mining of nickel.. Genesis and types of nickel laterites. Lateritic nickel ores formed by intensive tropical weathering of olivine-rich ultramafic rocks such as dunite, peridotite and ...

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Figure 27 is an example of a GPR profile over a nickel laterite zone from Francke (2012). Figure 27(a) is a schematic showing the different zones within the deposit. Figure 27(b) is the processed 30 MHz GPR profile with topographic relief. The boreholes overlain on the profile outline the limonite and saprolite zones (note colors on boreholes).

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