Recommended
More Related Content
What's hot
What's hot (20)
Similar to Slide preparation methods in mineralogy
Similar to Slide preparation methods in mineralogy (20)
Recently uploaded
Recently uploaded (20)
Slide preparation methods in mineralogy
- 1. SUBMITTED BY: NEERAJ SHARMA ROLL NO.:CUHP18ENV16SUBMITTED TO : DR. ANURAG LIND
- 2. PURPOSE OF SLIDE PREPARATION IN MINERALOGY Classification of rocks Identification and mapping of minerals , dating or exploration Analysis: major and trace elements , textural studies , isotopic composition Studies of fluid inclusion Studies of microfossil Studies of rock fabrics e.g. porosity and permeability Studies of texture and age of bones / teeth
- 3. SPECIMEN TYPES Specimen types can be split into 4 groups 1. Thin section (30µm ) (+cover glasses)-for examination in transmitted light or electron microscope/probe 2. Polished thin section-for examination in transmitted /reflected light or electron microscope/probe 3. Thick sections (100µm) – for examination in reflected light or electron microscope/ probe 4. Polished blocks /mounts-for examination in reflected light or electron microscope/probe Specimen type 1,2,3 all have special requirements from a materialographic point of view .Differences between the three types are characterized by surface finishing and specimen thickness. Specimen type 4 is a more conventional materialographic specimen in term of requirements
- 4. The same mineralogical material will have similar preparation methods across the four different specimen types
- 5. 1. Rock saws : automatic machine with clamping and diamond saw blades 2.Grinding machine: 2 grinding discs made of cast iron between 15cm and 30cm
- 6. 3. Polishing machines: semi automatic polishing machines , polishing discs 4.Polarization microscope:
- 7. Production of thin section is a multistep process which require highly specialized equipment 1) Sampling from larger section Thin section preparation
- 8. 2. Cutting of a specimen to 20*30*8.0mm Thin section preparation
- 9. Thin section preparation 3. Grinding or lapping of the specimen to complete planes
- 10. 4. Grinding of glass slide to complete planes and a well defined thickness Thin section preparation
- 11. 5. Cementing the specimen to a glass slide Thin section preparation
- 12. 6. Cutting off surplus specimen material to thickness of 0.5-2.0mm Thin section preparation
- 13. 7. Grinding of thin sections to a thickness of 80µm Thin section preparation
- 14. 8. Grinding or lapping of a thin section to a final thickness of section +resin 30µm Thin section preparation
- 15. 9. Polishing of thin section removing approximately 10µm Thin section preparation