Optical Mineralogy

In this module the index entries below enable direct access to the topics shown. The entries are derived from menu topics, page titles, key words and any glossary items. The amount and type of information available in the courseware for topics is variable; in some cases is just a simple definition, in others is an extended description, an explanation, or task.

Section:--: Index Entry
Introduction :--: Introduction
Introduction :--: What is optical mineralogy?
Petrological microscope :--: Introduction
Petrological microscope :--: Student microscope
Petrological microscope :--: Substage assembly
Petrological microscope :--: Eyepiece
Petrological microscope :--: Objective lens
Petrological microscope :--: Analyser, Bertrand lens, mirror
Petrological microscope :--: Accessory plates
Petrological microscope :--: Research microscope
Nature of light :--: Introduction
Nature of light :--: Longitudinal waves
Nature of light :--: Transverse waves
Nature of light :--: Electromagnetic radiation
Nature of light :--: Wavelength
Nature of light :--: Amplitude
Nature of light :--: Frequency
Nature of light :--: Time period
Nature of light :--: Velocity
Nature of light :--: Refractive index
Nature of light :--: Electromagnetic spectrum
Nature of light :--: Unpolarized light
Nature of light :--: Polarized light
Shape :--: Introduction
Shape :--: Shape quality
Shape :--: Shapes in igneous rocks
Shape :--: Euhedral grains
Shape :--: Subhedral grains
Shape :--: Anhedral grains
Shape :--: Shapes in metamorphic rocks
Shape :--: Idioblastic grains
Shape :--: Hypidioblastic grains
Shape :--: Xenoblastic grains
Shape :--: Habit
Cleavage :--: What is cleavage?
Cleavage :--: Relationship between cleavage planes
Cleavage :--: Cleavage quality
Cleavage :--: Fracture
Relief :--: Introduction
Relief :--: High relief
Relief :--: Moderate relief
Relief :--: Low relief
Relief :--: Relief in thin section
Refractive index :--: Introduction
Refractive index :--: Isotropic substances
Refractive index :--: Anisotropic substances
Refractive index :--: Snell's Law
Refractive index :--: Dispersion
Refractive index :--: Refractive index determination
Refractive index :--: Becke Line test
Refractive index :--: Refractive index of oils
Refractive index :--: Critical angle
Refractive index :--: Abbe refractometer
Refractive index :--: Refractive index in thin section
Colour :--: Introduction
Colour :--: Body colour
Colour :--: Pleochroism
Colour :--: Zoning
Absorption scheme :--: Introduction
Absorption scheme :--: Uniaxial pleochroic scheme
Absorption scheme :--: Biaxial pleochroic scheme
Interference of light :--: Interference of light
Extinction :--: Introduction
Extinction :--: Extinction angle definition
Extinction :--: Extinction angle determination
Extinction :--: Parallel extinction
Extinction :--: Inclined extinction
Extinction :--: Symmetrical extinction
Extinction :--: Extinction in cubic minerals
Extinction :--: Extinction in uniaxial minerals
Extinction :--: Extinction in biaxial minerals
Twinning :--: Introduction
Twinning :--: Contact twins
Twinning :--: Multiple twins
Twinning :--: Determining feldspar composition
Birefringence :--: Introduction
Birefringence :--: Two refractive indices
Birefringence :--: Isotropic mineral behaviour
Birefringence :--: Anisotropic mineral behaviour
Birefringence :--: Interference colours: monochromatic light
Birefringence :--: Interference colours: polychromatic light
Birefringence :--: Fast & slow directions
Birefringence :--: Mineral orientation
Birefringence :--: Determination of birefringence
Optical indicatrix :--: Introduction
Optical indicatrix :--: Major crystallographic systems
Optical indicatrix :--: Isotropic indicatrix
Optical indicatrix :--: Anisotropic indicatrix
Optical indicatrix :--: Uniaxial indicatrix
Optical indicatrix :--: Biaxial indicatrix
Interference figures :--: Introduction
Interference figures :--: Conoscopic light
Interference figures :--: Uniaxial figures
Interference figures :--: Uniaxial: optic sign determination
Interference figures :--: Uniaxial: using sensitive tint
Interference figures :--: Uniaxial: off-centred figures
Interference figures :--: Uniaxial: flash figure
Interference figures :--: Uniaxial: using quartz wedge
Interference figures :--: Biaxial figures
Interference figures :--: Biaxial: acute bisectrix
Interference figures :--: Biaxial: centred optic axis
Interference figures :--: Biaxial: obtuse bisectrix
Interference figures :--: Biaxial: optic normal
Interference figures :--: Biaxial: optic sign
Interference figures :--: Biaxial: optic sign determination
Interference figures :--: Biaxial: acute bisectrix = Z-axis
Interference figures :--: Biaxial: acute bisectrix = X-axis
Interference figures :--: Biaxial: optic axis figure
Interference figures :--: Biaxial: using quartz wedge
Mineral identification :--: Mineral identification example

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