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18-Geol-A1 Mineralogy and Petrology: December 2018

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

  1. Question 1 Amphibole and Pyroxene — Crystallographic Differences
  2. Question 2 Oxide Ore Minerals — Fe, Cr, Ti, U, Cu
  3. Question 3 Evidence for Crystal Fractionation, Magma Mixing and Crustal Assimilation
  4. Question 4 The Seven Crystal Systems
  5. Question 5 Dynamic Metamorphism
  6. Question 6 Lava Flow Morphology — Sensitivity to Composition, Temperature, Viscosity and Vent Proximity
  7. Question 7 Ignimbrites — Formation
  8. Question 8 Metasomatism and Skarn Formation
  9. Question 9 What Causes Melting in Different Tectonic Settings
  10. Question 10 Effusive vs. Explosive Eruptions
  11. Question 11 Bowen's Reaction Series and the Origin of Igneous Rock Diversity
  12. Question 12 Carbonate Minerals

Start with Question 1 →

EGBC National Exam — Geological Engineering, 18-Geol-A1 Mineralogy and Petrology, 2018-Dec. Closed book; no calculator permitted.

Reference texts: Klein & Dutrow, Manual of Mineral Science, 23rd ed. (silicate/oxide structural classification, mineral chemistry and formulas, crystal systems); Winter, Principles of Igneous and Metamorphic Petrology, 2nd ed. (magmatic differentiation, Bowen's reaction series, metamorphic agents/facies, volcanic and pyroclastic processes, partial melting); Boggs, Petrology of Sedimentary Rocks, 2nd ed. (carbonate mineral diagnostics).