PPT-Common Rock-forming Minerals

Quartz Quartz which is usually called silica is one of the most common minerals in the Earths crust Quartz is made up of silicon dioxide SiO2 Quartz crystals are usually hexagonal and . Colby Geology. Igneous Rocks. Classification based on . composition. and . texture. .. COMPOSITION. Principally the rock-forming minerals. Olivine. Pyroxenes. Amphiboles. Micas. Feldspars. Quartz. Constitute 95% of minerals in . By Mr. Krall. What is a Rock?. A . rock. is a mixture of minerals.. Rocks form and reform through the . rock cycle. . . Lava/Magma. THE ROCK CYCLE. Igneous Rock. Igneous . (. ig. -nee-us) . rock. forms when molten rock cools and solidifies.. Grain . Mineralogy. Reading Assignment: Boggs, Chapter 5. Key Concepts. Context of crust composition and surface rock composition. Quartz. Feldspar. Rock fragments. Other grains. Classification. Sedimentology. Rocks are classified by how they are formed, their composition, and texture. Rocks change over time through the rock cycle. TYPES OF ROCKS. ROCKS ARE DIVIDED INTO THREE GROUPS BASED ON HOW THE ROCKS . What are minerals?. Common rock-forming minerals. Physical properties of minerals. Basic rock types. The rock cycle. Minerals . Natural . Solid. Atoms arranged in orderly repeating 3D array: . crystalline. Activator How do rocks relate to minerals? Rock vs Mineral? Decide if each object shown better represents a rock or a mineral. Hold up the rock side or mineral side of your page. Example: Rock SCience. Mineral Qualities. What is a mineral?. To be a mineral a substance must have ALL of the following qualities. occur naturally. - . formed by nature, not by man. form from an inorganic process- . Reading Assignment: Boggs, Chapter 5. Key Concepts. Context of crust composition and surface rock composition. Quartz. Feldspar. Rock fragments. Other grains. Classification. Sedimentology. Grain Mineralogy (1): Crustal composition. Rocks and Minerals. A rock is any solid mass of mineral, or mineral-like, matter that occurs naturally as part of our planet. . Most rocks, like the common rock granite, occur as aggregates of several different minerals. . 1. What is Petrology?-. Study of Rocks. 2. What Study?-. Source and Processes. 3. How to Study?-. Field Relations, Field characteristics, Mineralogical (what are the minerals?), . Petrographical. ( . Rock thin sections. Rock thin sections are slices of rock glued onto microscope slides and polished until they are about 30μm thick (about the thickness of human hair).. The microscope used to study minerals in rock thin sections.. Metamorphic ROCKS. Geo 281: geology for engineers. Geology and Geophysics Department. King Saud University. What is metamorphism. Metamorphism . is the . transformation of . one rock type into another.. Geomorphology (. GEO 301). Geology and Geophysics Department. College of Science. King Saud University. Introduction. The world’s landforms are the result of . the interaction . between . internal (. Geo 281: geology for engineers. Geology and Geophysics Department. King Saud University. Minerals: Building. Blocks of Rocks. We begin our discussion of Earth . materials with . an overview of . mineralogy (mineral = mineral and Logy=Study) because .