BGYCT-133 CRYSTALLOGARPHY, MINERALOGY AND ECONOMIC GEOLOGY in English Solved Assignment 2020-2021

BGYCT-133 CRYSTALLOGARPHY, MINERALOGY AND ECONOMIC GEOLOGY

Solved Assignment 2020-2021

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Course Code: BGYCT-133
Assignment Code: BGYCT-133/TMA/2021
Maximum Marks: 100

Title Name

BGYCT-133 Solved Assignment 2020-21

University IGNOU
Service Type Solved Assignment (Soft copy/PDF)
Course BSCG
Language ENGLISH
Semester 2020-2021 Course: B.SC(G) CBCS
Session 2020-21
Short Name BGYCT-133 (ENGLISH)
Assignment Code BGYCT-133/TMA/2021
Product Assignment of BSCG 2020-2021 (IGNOU)
Submission Date This assignment is valid from 1st July, 2020 to 30th June, 2021. If you have failed in this
assignment or fail to submit it by June, 2021, then you need to get the assignment for the
year 2021-22, and submit it as per the instructions given in the Programme Guide.

 

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Part A
1. Write short notes on the following:
a) Elements of symmetry (5)
b) Tectosilicates (5)
2. Describe the physical properties of minerals belonging to pyroxene group. (10)
3. Discuss the crystallographic axes, symmetry elements and forms of normal
class of tetragonal crystal system with the help of neat well labeled diagrams.
(10)
4. Explain the law of constancy of interfacial angles giving suitable examples. (10)
5 Describe the physical properties of minerals which depend on interaction of
light giving suitable examples.
(10)
Part B
6. Explain briefly the late magmatic processes of ore formation. (10)
7. Differentiate the following :
a) Pleochroism and pleochroic haloes (5)
b) Polysynthetic twinning and cross hatched twinning (5)
8. Discuss the optical properties of minerals studied under plane polarized light. (10)
9. Discuss the Indian occurrences of petroleum. Add a map showing their spatial
distribution.
(10)
10. Differentiate the following:
a) Hornblende and augite in thin section (5)
b) Strategic minerals and essential minerals (5)

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BGYCT 133, BGYCT133, BGYCT-133

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