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Pune University - FY BSc GEOLOGY - I, April 2010

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Total No. of Questions :5] P189 [Total No. of Pages : 2 [3717]-11 F.Y. B.Sc. GEOLOGY -I Mineralogy and Petrology (Paper-I) (Revised Course)(2008 Pattern) Time :3Hours] [Max. Marks : 80 Instructions to the candidates: 1) All questions are compulsory. 2) Neat labelled diagrams must be drawn wherever necessary. 3) Figures to the right indicate full marks. Q1) Answer the following questions: a) What is Hardness ? b) What is Sublimation? c) Define the term Isomorphism. d) What is rock? e) What is Phyllosilicate structure. f) What are dykes? g) State the branches of mineralogy. h) [16] What is Isotropism? Q2) Answer the following questions (any four) [16] a) Explain the Ionic bonding in minerals with suitable examples. b) Explain the process of crystallization of magma in the formation of minerals. c) Describe the cyclosilicate structure with suitable examples. d) What is Petrological microscope? Differentiate between petrological microscope and other microscope. e) Explain the Electrical Properties of minerals. f) Give an account of minerals used in Cement Industry. P.T.O. Q3) Answer the following questions (any four) a) What is magma? Give the composition of magma. b) Describe the Arenaceous sedimentary rocks. c) Give the classification of Igneous rocks based on silica content. d) Give diagnostic characters of Metamorphic rocks. e) Explain the various modes of transportation of sediments. f) [16] Explain Rock Cycle . Q4) Answer the following questions: (any two) [16] a) Explain the various optical properties of minerals seen in plane polarized light. b) What is texture? Explain equigranular texture in Igneous rocks with suitable examples. c) Describe the various agents of metamorphism. d) Give the silicate structure, chemical composition, physical and optical properties of Olivine . Q5) Give the crystallographic axes, Elements of symmetry, definition with indices [16] of various forms present in Orthorhombic system, type Baryte. OR a) State the different physical properties of minerals. Explain cleavage and Fracture with suitable examples. [8] b) Explain Laccolith and phacolith forms of Igneous rocks. #### [3717]-11 2 [8]

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Additional Info : F.Y. B.Sc. GEOLOGY - I : Mineralogy and Petrology (Paper-I) (Revised Course)(2008 Pattern), Pune University
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