Please type the answer, I don\'t want handwriting answers Thanks. Question 5 Des
ID: 295713 • Letter: P
Question
Please type the answer, I don't want handwriting answers Thanks.
Question 5 Describe the origin of komatiite-associated nickel slphide ores, emphasizing the difference in disseminated and massive types (i.e Kambalda and Mt Keith types). Nickel sulphide ores are particularly susceptible to supergene enrichment near the water table. What is the mineralogy of primary (hypogene) nickel sulphide ores and supergene zone ores? Briefly describe how this process occurs iii Discuss the main issues which sometimes cause problems in the metallurgical processing of nickel sulphide ores (from a mineralogical perspective).Explanation / Answer
1) origin of the komatiite associated nikel sulphide ore-
these can be defined as these are the class of the magnetic iron nickel copper platinum group element ore deposition in which the physical process of the Komatiite volcanogy served to deposite,concerntrate and enrich the melt depositions of the lava within the flow environment of the lava eruptions. it generally takes place in between the region of the sea floor and the eye of the volcanic eruption flow fields. when the molten lava flow it come with the environmental fluid like air water and gas which make it solidifications and form the ore of nickel and other composition element with it.
types are-
kambalda- it is a type of nickel deposition which is assumed to be formed approximately 2.7 billions years ago. these depositions were formed in the lava channel which were created by the rivers of lava that extended for many huge and large distances. the nickel sulphide pools were generated in the base plane of this lava channels which it terms exposed to nickel deposition ores.
mt keith- it is a open pit nickel mine and channel of the ore deposition in the western australia. it is a type of mine which is located in the northern side of about 800 km to the greenstone belt. the nickel sulphide deposited are like the dyke type or sill deposite type.it provide the 10 percent of the world nickel ore deposition to the various industries in the world.
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2) the mineralogy of the primary nickel sulphide is the composition of the phyrottite, pendlantite , chalcopyrite and the magnatite.in this composition the pendlantite is consisder as the major as well as the main composition for the case of the primary nickel sulphide. the supergene is the main constituent of the sulphide of the mineralogy of a nickel in case it is not the hypogene. in the hypogene the formation is always takes near to the water table or at the channel of the ground water but on the other hand in the case of the supergene the formation is takes place to the ore region which is away or far from the water table or channel of the ground water. these all above composition which we termed as the minerlogy for the nickel sulphide get deposited and diffused in the ore as well as mixed with the sulpher in the ground in the presence of the oxygen and thus it generate both types of the sulphide formations.
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3) the main issue which are realted with this or you can say in the matellurgical process of the nickel sulphide is the contamination of the ground water table. as we have already descried it above that for the case of the supergene and the hypogene the ore formation of the nickel sulphide is takes place near the water or near to the otner ground sources. this when get mixed with the water formed the contamiations of the ground water. other probelm is that it supply the bad composition and mineral wastes to the soil and thus pollute and contaminate it too.