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18-Geol-A1 Mineralogy and Petrology: December 2016

Nivaar worked solution (AI-drafted; not reviewed by a licensed engineer)

  1. Question 1 Mica, Amphibole and Pyroxene — Structural Differences
  2. Question 2 Oxide Ore Minerals — Sn, Fe, Al, Ti, U
  3. Question 3 Sanidine, Microcline and Orthoclase — K-Feldspar Polymorphs
  4. Question 4 Evidence for Crystal Fractionation, Magma Mixing and Crustal Assimilation
  5. Question 5 Four Basic Agents of Metamorphism
  6. Question 6 Contact Metamorphism
  7. Question 7 Ophiolites — Formation and Internal Stratigraphy
  8. Question 8 Barrovian vs. Buchan Facies Series — Pelitic Mineralogy
  9. Question 9 Paired Metamorphic Belts
  10. Question 10 Metamorphism vs. Metasomatism — Exoskarn, Endoskarn and Hornfels
  11. Question 11 Partial Melting Mechanisms by Tectonic Setting
  12. Question 12 Volcanic Eruption Types
  13. Question 13 Calc-Alkaline vs. Tholeiitic and Alkaline Rock Series — AFM Diagram

Start with Question 1 →

EGBC National Exam — Geological Engineering, 04-Geol-A1 Mineralogy and Petrology, 2016-Dec. Closed book; no calculator permitted. Part 1 requires all six 10-mark short-answer questions (60 marks); Part 2 instructs "answer 4 of the 7 ten-mark questions" (40 marks).

Reference texts: Klein & Dutrow, Manual of Mineral Science, 23rd ed. (mineral/silicate structural classification, ore mineralogy); Winter, Principles of Igneous and Metamorphic Petrology, 2nd ed. (magmatic differentiation, phase diagrams, metamorphic reactions and facies, AFM projections, volcanic processes, ophiolites and oceanic crust, subduction-zone/rift/hotspot melting); Nesse, Introduction to Optical Mineralogy, 4th ed. (index-mineral optics).