IGNOU BGYET 141 2026 - Discuss various classification of ore deposits.

Question

Discuss various classification of ore deposits.

19 Jan 2026

Answer :

Word Count : 492

Ore deposits are concentrations of minerals of economic value that can be profitably extracted, and their classification helps in understanding their origin, distribution, and exploration potential. One important basis of classification is genetic, which considers the processes responsible for ore formation. Magmatic ore deposits originate directly from magmas during cooling and crystallization. Early-formed minerals may settle by gravity to form magmatic segregations such as chromite and magnetite, while late-stage residual melts and fluids produce pegmatitic deposits rich in rare metals like lithium, beryllium, and tantalum. Hydrothermal deposits are formed from hot aqueous solutions circulating through rocks, depositing ores in veins, stockworks, or replacements; examples include copper, lead, zinc, gold, and silver deposits. Sedimentary ore deposits are formed by

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