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Course Coordinator Dr Jodie Miller (021) 808 2131 jmiller@sun.ac.za
Lecturers 1st Semester , Prof John Clemens (021 808 3159), jclemens@sun.ac.za
  2nd Semester, Dr Jodie Miller (021) 808 3121, jmiller@sun.ac.za
Course Structure 3 lectures and one 3-hr practical per week
Course Timetable Lectures:
Language Specification E
Course Prerequisite Geology 114, 144 or Geo-Environmental Science 114, 144
Course Corequisite None
Old Course Notes
Note: As from 2008 GEOL278 takes the place of the old GEOL144, GEOL214, and GEOL254. Students are now required to enrol in the complete GEOL278 program and cannot take individual semester components for lower credits.
 

1. First Semester
Introduction to mineralogy, crystallography and mineral chemistry. The objectives of the first semester of the 278 are to review the geochemical basis for mineralogy, to introduce the subjects of crystallography and systematic mineralogy, and to train learners how to identify minerals in hand specimen. Both rock-forming and ore minerals will be introduced. In addition, some practical skills in library research and presentation will be covered.
 
2. Second Semester
The use of the petrographic microscope is essential for geologists as it is the most cost effective way of identifying minerals and thus classifying rocks. The course in optical mineralogy is specifically designed to enable the learner to identify minerals based on their optical properties. This knowledge is immediately applied to identifying minerals present in igneous and metamorphic rocks and to classifying these rocks. Basic introductory concepts in petrographic interpretation of mineral assemblages and textures are discussed and their use in identifying igneous, metamorphic and sedimentary rocks explored.
 
 

1. First Semester
The part of the module will enable students to recognise the common minerals that they will encounter in rocks and ores, and their weathering and alteration products. It will also provide students with an appreciation of the chemical and structural bases for the classification of minerals and an understanding of mineral paragenesis (the occurrences of mineral suites). This understanding will equip the students for the microscope-based mineralogical and petrological approaches that will be used in the second semester.
 
2. Second Semester
Students should have the following skills at the end of the course.
  • Practical ability to use mineral optical properties to identify the common rock forming minerals in thin sections.
  • Understanding of the petrological classification of igneous and metamorphic rocks from mineral proportion and mineral textural information.
  • Competence in practical igneous and metamorphic rock description.
  • Understanding of simple igneous systems, including the use of binary and ternary phase diagrams in interpreting igneous rock petrogenesis.
  • Understanding of simple metamorphic systems including the use of the phase rule and the concept of equilibrium
  • Practical ability to classify rocks using established geochemical classification systems.
 

1. First Semester
  • Deer, W.A., Howie, R.A. and Zussman, J. (1996) An Introduction to the Rock-forming Minerals. 2nd edition, Longman Scientific and Technical, London, 696 pp.
  • Gribble, C.D. and Hall, A.J. (1992) Optical Mineralogy: Principles and Practice. UCL Press, London, 303 pp.
  • Nesse, W.D. (2000) Introduction to Mineralogy. Oxford University Press, New York, 442 pp.
 
The following websites have useful compilations on hand-specimen mineralogy and crystallography:
 
2. Second Semester
It is recommended that students taking the G214 course purchase a copy of the following reference book.
  • Introduction to the Rock-Forming Minerals by Deer, Howie and Zussman, Longman Scientific and Technical
This book is a reference book and will be suitable for use through to the end of your degree and further depending on your career path. A group order is placed at Protea Bookstores and should be available by the beginning of the semester. Additional copies can be ordered but often take 6 weeks or more to arrive.
 
The following websites have useful compilations on optical mineralogy
***** http://www.uwgb.edu/dutchs/petrolgy/thinsect.htm. This whole site is very good!
 
These sites are also useful and have similar information but just on optical mineralogy
 
 

Students are encouraged to consult as many text books and journals as possible. The Gemmological and Optical Microscope laboratories are available at most times, by arrangement with the lecturers.
 

In 2008, GEOL278 will be subject to continuous assessment. The assessment will be divided evenly between the two semesters (ie 50 % of the marks come from 1st semester assessment opportunities and 50 % come from second semester.
 
Assessment for First Semester Component
 
The first semester assessment is composed of: (1) Assessment of the three prescribed practical tasks, (2) an oral presentation based on library research, and (3) one theory and one practical test at the end of the semester.
  • Assessed practical work takes the form of three practical assignments, one of which constitutes 10 weeks of the semester. This practical assignment is worth 40 % of the semester's marks with the other two practicals worth 10 % each
  • A library research task will be assigned to groups of students and will involve research into a specific mineral group and a powerpoint presentation on this work. The presentation is worth 20 % of the semester's marks and will constitute four weeks work
  • A final theory and a final practical test will take in the second last week of the semester. Each of these tests is worth 10 % of the semester's marks.
 
Therefore the assessment mark for the second semester is calculated as follows:
  • Practical work 60%
  • Research project and presentation 20%
  • Theory and practical test 20%
 
Assessment of Second Semester Component
 
The second semester assessment is composed of: (1) continuous assessment of marked practical work, (2) tests during the semester, and (3) one practical test at the end of the semester.
 
  • The marked practical work is composed of 10 practical assignments. One of these is a take home assignment. The practicals are worth 50% of the second semester assessment (i.e. each practical is worth 4%). Due dates for practicals are clearly indicated on the practical when it is handed out in class.
  • Four 40 minute tests will be held during the semester on dates to be provided. An optional fifth test will be scheduled according to students timetables. The four best marks are combined to give a single test mark out of 20.
  • The practical examination will be 2 hours in duration and will require microscope identification of minerals and hand specimen examination. The practical test is worth 30% of the second semester assessment.
 
Therefore the assessment mark for the second semester is calculated as follows:
  • Practical work 50%
  • Test mark (best of 4) 20%
  • Practical exam 30%
 
Compilation of Final Year Mark
The final mark for 278 is determined by combining the two semester marks in the ratio 50:50. A pass or fail is determining according to standard University guidelines as outlined in the University Calendar, Part 1. Note that there is no sub-minimum on any individual component of this course.