EESB15H3 Lecture 6: EESB15 Midterm Notes
15 Dec 2015
School
Department
Course
Professor
Document Summary
The most abundant materials in the earth are iron (35%) and oxygen (30%) The most abundant materials in the earth"s crust are oxygen (46%) and silicon (28%) The 8 most abundant minerals on earth: oxygen, silicon, aluminum, iron, calcium, sodium, potassium and magnesium. Mineral: naturally occurring, solid, inorganic substance having a specific chemical composition and a specific crystal structure. A mineral cannot be manufactured; cannot be liquid or gas; cannot be bio-organic (living or once- living); cannot have a random composition; and cannot have randomly arranged molecules. Inorganic: formed from inorganic processes (e. g. crystalline from magma or precipitate from solution). How do minerals form: evaporation and precipitation: Precipitation from solution (liquid): atoms dissolved in water bond together and separate out (e. g. salt and gypsum deposits, carbonate deposits (chemical sedimentary rocks): crystallization of magma and lava: Solidification (crystallization) of a melt during cooling: minerals will crystallize from magma when conditions are right: crystal formation and growth:
