IGNOU BGYET-141 June 2022 Previous Year Question Paper

Q1.Briefly answer any five questions out of the following : 5x2=10

(a) Name any two gold tellurides.

(b) List any four ore minerals of manganese.

(c) Define allochthonous deposits.

(d) What are epithermal ore deposits ?

(e) What are the two main mineralisation processes responsible for the formation of most of the Volcanogenic Massive Sulphide (VMS) deposits ?

(f) Define skarn deposits.

(g) What is Self-Potential (SP) method ?

(h) Name any two metals deposited at the continental-continental divergent plate boundaries.

(i) | What are industrial minerals ? G) What are the important deposits formed at oceanic ridge ?

Q2.Write short notes on any four of the following : 4x5=20

(a) Tabular ore bodies

(b) Types of limestone

(c) Physical properties of Galena and Zincite

(d) Banded Iron Ore Formation (BIF)

(e) Pathfinder elements

(f) Exclusive Economic Zone (EEZ)

(g) Geological guides

Q3.Answer any one of the following : 1x10=10

(a) What is an ore microscope ? Describe the major components of an ore microscope with the help of well-labelled diagram.

(b) Discuss in detail the mode of occurrence, distribution in India and uses of any one material used as building stones.

Q4.Answer any one of the following : 1x10=10

(a)

(i) Discuss the processes of ore formation of early magmatic deposits. Gi) What is residual concentration ? Discuss the favourable conditions required for the deposition of residual concentration deposits.

(b) Define exploration. Discuss the stages of mineral exploration.

(ii) Discuss the objectives of the National Mineral Policy.