WebSelective element enrichment generally includes steps of (1) dissolution of elements from common crustal or mantle rocks, (2) physical transport by a mobile phase such as a melt or an aqueous fluid, and (3) chemical precipitation in distinct minerals forming the ore deposit. WebIn the previous chapter we have described some of the mineral deposits that have formed by magmatic activity, often by segregation within the magma chamber itself. In this …

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Webmagmatic-segregation deposit Concentration of particular minerals in different parts of a magma chamber during consolidation, by gravity settling, filter pressing, flow, … WebNov 1, 2024 · Magmatic deposits form directly from a melt by magmatic segregation, either by direct crystallization or by exsolution of an immiscible liquid. These deposits are genetically related to their host rocks, and thus mineralization age is the same as or close to the age of the host rocks. holding direction

Segregation and Fractionation of Magmatic Ni-Cu-PGE Sulfides …

WebJul 1, 2015 · We propose that concentration of magnetite takes place by the preferred wetting of magnetite, followed by buoyant segregation of these early-formed magmatic magnetite-bubble pairs, which become a rising magnetite suspension that deposits massive magnetite in regional-scale transcurrent faults. WebJul 1, 2011 · Magmatic sulfide deposits host ∼40% and >99% of the global resources of nickel (Ni) and platinum-group elements (PGE) and ∼3% of copper (Cu) and provide 60% Ni and >99% PGE to the world market. WebThe most important magmatic deposits are restricted to mafia and ultramafic rocks which represent the crystallization products of basaltic or ultramafic liquids. These deposit types include: 1.Chromite Deposits … holding difficult conversations training