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18-Geol-A1 Mineralogy and Petrology: December 2019

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

  1. Question 1 Feldspar and Olivine — Silicate Group Differences
  2. Question 2 Element Substitution in Mineral Structures — Goldschmidt's Rules
  3. Question 3 Evidence for Crystal Fractionation, Liquid Immiscibility and Crustal Assimilation
  4. Question 4 Two of the Seven Crystal Systems — Hexagonal and Triclinic
  5. Question 5 Dynamic Metamorphism
  6. Question 6 Ignimbrites — Formation by Eruption-Column Collapse
  7. Question 7 MORB — Formation by Decompression Melting
  8. Question 8 The Wilson Cycle — Ocean Basin Opening and Closing
  9. Question 9 Metamorphism vs. Metasomatism
  10. Question 10 Four Common Igneous Minerals in a Felsic Rock — Hand-Lens/Microscope Diagnostics
  11. Question 11 Bowen's Reaction Series and the Origin of Igneous Rock Diversity
  12. Question 12 Sulfide Minerals — Formula and Diagnostic Properties

Start with Question 1 →

EGBC National Exam — Geological Engineering, 18-Geol-A1 Mineralogy and Petrology, 2019-Dec. Closed book; no calculator permitted.

Reference texts: Klein & Dutrow, Manual of Mineral Science, 23rd ed. (silicate structural classification, mineral chemistry and substitution, crystal systems, sulfide/carbonate ore mineralogy); Winter, Principles of Igneous and Metamorphic Petrology, 2nd ed. (magmatic differentiation, Bowen's reaction series, tectonic settings of magmatism, metamorphic/metasomatic processes, volcanic and pyroclastic processes, plate-tectonic cycle).