Master of Science I (Applied Geology)
Examination: Oct Nov 2016 Semester I (New CBCS)
SLR No. Day
Date Time Subject Name Paper No. Seat No.
SLR SE
-31
Wednesday
16/11/2016
10.30 AM
to
01.00 PM
Mineralogy and Optics
C
AGT 101
Instructions: Answer any five questions.
All question carry equal marks.
Question 1 is compulsory.
Answer any two essay questions from 4.
Answer any two short note questions from 7.
Draw neat and labeled diagrams wherever necessary.
Total Marks:70
Q.1 Fill in the blanks with correct answer: 14
Following is the gemstone variety of beryl
Aquamarine Emerald
Both a b None
Mineral section cut across c-axis show nature.
Isotropic Anisotropic
Both a b None
The Refractive Index of extra ordinary ray of light in calcite is

1.65 1.48
2.65 2.48
Uniaxial figures are observed in minerals.
Cubic system Section perpendicular to c-axis
Section parallel to
c-axis
Both a b
ISO tropic minerals under microscope do not show
No change in color Pleochroism
Interference color All the above
Following is a gem variety of corundum.
Emerald Ruby
Aquamarine Topaz
Find the odd one out
Chest Quartz
Apatite Agate
Which of the following property belong to state of aggregation?
Amorphous Crystalline
Crypto crystalline Stalactitic

Which of the following is a rock farming mineral?
Zeolite Rutile
Zircon Biotite
10) Metamorphic quartz shows extinction.
Straight Inclined
Wavy None
11) Which of the following is a Zeolite?
Natrolite Stilbite
Apophyllite All the above
12) Difference in Refractive Index is known as
Pleochroism Birefringence
Dispersion Isotropism
13) Illite is a variety of group of minerals.
Zeolite Quartz
Clay Mica
14) The mineral quartz represents silica.
Low temperature High Temperature
Medium temperature None
Q.2 Describe the behavior of light under microscope. 14
Q.3 Describe crystal structure, chemistry and diagnostic properly of
Amphiboles.
14
Q.4 Describe the use of optical accessories in determing optical properties of
minerals. Cite suitable examples.
14
Q.5 Write short notes on: 14
Feldspar
Types of gemstones
Q.6 Explain in short: 14
Alumino Silicates
Mica
Q.7 Write notes on: 14
Optical properties of Epidote
Interference figures