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| JLJ2013 | Optical Mineralogy | 2+0+2 | ECTS:5 | | Year / Semester | Fall Semester | | Level of Course | First Cycle | | Status | Compulsory | | Department | DEPARTMENT of GEOLOGICAL ENGINEERING | | Prerequisites and co-requisites | None | | Mode of Delivery | | | Contact Hours | 14 weeks - 2 hours of lectures and 2 hours of laboratory per week | | Lecturer | Prof. Dr. Emel ABDİOĞLU YAZAR | | Co-Lecturer | All Faculty Members of Mineralogy-Petrography Division | | Language of instruction | Turkish | | Professional practise ( internship ) | None | | | | The aim of the course: | | To provide students with a level of knowledge to use polarizing microscopy and to make optical descriptions of rock-forming minerals. |
| Learning Outcomes | CTPO | TOA | | Upon successful completion of the course, the students will be able to : | | | | LO - 1 : | summarise knowledge in physics of light, and the nature of minerals under the polarizing microscope. | 1,2,3,4,5 | 1,4, | | LO - 2 : | understand optical theory pertaining to transmission of light through isotropic and anisotropic minerals. | 1,2,11,13,14 | 1,4, | | LO - 3 : | attain familiarity with the moving parts of a polarizing microscope. | 1,2,11,13,14 | 1,4, | | LO - 4 : | recognize and demonstrate fundamental differences between isotropic, uniaxial, and biaxial minerals through optical tests performed with a polarizing microscope. | 1,2,11,13,14 | 1,4 | | LO - 5 : | utilize optical properties to identify common rock forming minerals in a thin section. | 1,2,11,13,14 | 1,4 | | LO - 6 : | estimate modal mineralogy (volume % proportions) in thin sections of igneous, sedimentary, and metamorphic rocks. | 1,2,11,13,14 | 1,4 | | CTPO : Contribution to programme outcomes, TOA :Type of assessment (1: written exam, 2: Oral exam, 3: Homework assignment, 4: Laboratory exercise/exam, 5: Seminar / presentation, 6: Term paper), LO : Learning Outcome | | |
| Introduction to crystal optics. Content and components of optical mineralogy. Thin-section and its preparation. Light and polarizing light. Isotropic and anisotropic substances. Reflection, refraction and refraction index. Indicatrix, uniaxial and biaxial indicatrix. Usage of nicols (polarizer and analyzer). Components of polarizing microscopes. Examinations under plane polarized light (PPL): opacity, colour, pleochroism, crystal habit and geometry, cleavage-parting-cracks, inclusion, alteration, paragenesis, relief, Becke line method. Examinations under crossed polars (XPL); isotropy and anisotropy, interference colour and measurement of birefringence, Newton colour scale and accessory plates, extinction and measurement of extinction angles, elongation direction. Conoscopic examinations; interference figure and sign of uniaxial and biaxial crystals under the conoscope. Determination of plagioclase types by examining extinction angle measurements. Modal analysis. Optical characteristics of common rock-forming minerals. |
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| Course Syllabus | | Week | Subject | Related Notes / Files | | Week 1 | Introduction to crystal optics. Content and components of optical mineralogy. | | | Week 2 | Thin-section and its preparation. Light and polarizing light. | | | Week 3 | Isotropic and anisotropic substances. Reflection, refraction and refraction index. | | | Week 4 | Indicatrix, uniaxial and biaxial indicatrix. | | | Week 5 | Usage of nicols (polarizer and analyzer). Components of polarizing microscopes. | | | Week 6 | Examinations under plane polarized light (PPL): opacity, colour, pleochroism, crystal habit and geometry, cleavage-parting-cracks, inclusion, alteration, paragenesis. | | | Week 7 | Examinations under plane polarized light (PPL): relief, Becke line method. | | | Week 8 | Examinations under crossed polars (XPL); isotropy and anisotropy, interference colour and measurement of birefringence. | | | Week 9 | Mid-term exam | | | Week 10 | Examinations under crossed polars (XPL); Newton colour scale and accessory plates, extinction and measurement of extinction angles, elongation direction. | | | Week 11 | Conoscopic examinations; interference figure and sign of uniaxial crystals under the conoscope. | | | Week 12 | Conoscopic examinations; interference figure and sign of biaxial crystals under the conoscope. | | | Week 13 | Determination of plagioclase types by examining extinction angle measurements. | | | Week 14 | Modal analysis of the rocks. The laboratory exam | | | Week 15 | Optical characteristics of common rock-forming minerals. | | | Week 16 | End-of-term exam | | | |
| 1 | Arslan, M. Optik Mineraloji Ders Notu. | | | 2 | Aslaner, M. 1986; Optik Mineraloji. Karadeniz Teknik Üniversitesi Genel yayın no. 98. Fakülte yayın no. 40. | | | |
| 1 | Aslaner, M., 1995; Mineraloji I. KTÜ Yayın no: 181. | | | |
| Method of Assessment | | Type of assessment | Week No | Date | Duration (hours) | Weight (%) | | Mid-term exam | 9 | | 1 | 30 | | Laboratory exam | 14 | | 1 | 20 | | End-of-term exam | 16 | | 1,5 | 50 | | |
| Student Work Load and its Distribution | | Type of work | Duration (hours pw) | No of weeks / Number of activity | Hours in total per term | | Yüz yüze eğitim | 2 | 14 | 28 | | Sınıf dışı çalışma | 2 | 14 | 28 | | Laboratuar çalışması | 2 | 14 | 28 | | Arasınav için hazırlık | 3 | 7 | 21 | | Arasınav | 1 | 1 | 1 | | Dönem sonu sınavı için hazırlık | 4 | 14 | 56 | | Dönem sonu sınavı | 1 | 1 | 1 | | Diğer 1 | 1 | 1 | 1 | | Total work load | | | 164 |
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