B.Sc-B.Sc Geology 2nd Sem Mineralogy and Petrology(University of Pune, Pune-2013)
F.Y. B.Sc.
GEOLOGY
SEAT No. :
[Total No. of Pages : 2
Mineralogy and Petrology
(2008 Pattern) (Paper - I)
Time : 3 Hours] [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) Define mineral.
b) What is atmophile?
c) What is thermal metamorphism?
d) What is sill?
e) Define extinction. f) What is magma?
g) Define pseudomorphism.
h) What is anisotropism?
Q2) Answer the following questions (any four) :
a) Give an account of minerals used in cement industry.
b) Explain the radioactive properties of minerals.
c) Explain the vander waals bonding in minerals with suitable examples.
d) Describe the sorosilicate structure with suitable examples.
e) Differentiate between petrological and other microscope.
f) Explain the process of oxidation and supergene enrichment in the
formation of mineral.
P.T.O.
Q3) Answer the following questions (any four) :
a) Explain residual deposits with suitable examples. b) Explain Bowen’s reaction series.
c) Describe the texture of conglomerate and limestone.
d) Explain the granulose structure in metamorphic rocks. e) Describe the agents of metamorphism.
f) Explain porphyritic texture seen in Igneous rocks.
Q4) Answer the following questions (any two) :
[16]
[16]
a) Give the silicate structure, chemical composition, physical and optical
properties of ‘Orthoclase’.
b) Explain the following structures of Igneous rocks.
i) Vesicular structure.
ii) Columnar jointing.
c) Explain the construction and working of Nicol’s prism.
d) Explain the graded bedding and ripple mark structure in sedimentary
rocks.
Q5) Give the elements of symmetry, Crystallographic axes, definition with indices
of various forms present in Cubic system, type Galena. [16]
OR
a) What is specific gravity? Explain Walker’s steelyard balance in the
determination of specific gravity of minerals.
b) Explain the cataclastic and dynamothermal metamorphism in metamorptic
rocks.
| Earning: Approval pending. |
