| 1. | Macerals are observed under the petrographic microscope under reflected light.
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| 2. | Under the petrographic microscope it has a very high relief.
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| 3. | He was also the first scientist in Finland to use a petrographic microscope.
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| 4. | In 1926, he developed a petrographic microscope.
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| 5. | It would be glued to a slide and placed under a petrographic microscope for examination.
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| 6. | Viewing under a petrographic microscope, the crystals contains a scattering of minute bubble-like inclusions.
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| 7. | Michel-L�vy pioneered the use of birefringence to identify minerals in thin section with a petrographic microscope.
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| 8. | In optical mineralogy, a petrographic microscope and cross-polarised light are often used to view the interference pattern.
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| 9. | Related to crystal form, the quality of crystal faces is diagnostic of some minerals, especially with a petrographic microscope.
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| 10. | The "'primary features of Nile silt "', as revealed by a petrographic microscope, include:
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