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Igneous Rocks Lecture 3 Types of Rock include Igneous, Sedimentary and Metamorphic Marble demo, rock specimens, Petrographic Microscope, Olivine Porphyry or Gabbro Trays…

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Slide 1 Essential Questions What are the different types and textures of igneous rocks? How do cooling rates affect the grain sizes in igneous rocks? What are some of the…

Slide 1 Optical Microscopy Study of how light passes through thin sections – rock cut and polished to about 0.3 mm thickness Use properties of light absorption and propogation…