GEOL 1003 Chapter : GEOL 1003 Exam 1 Chapters 2 6
Document Summary
Chapter 2: the structure of minerals, what constitutes something as a mineral, naturally occurring, definite (but not fixed) chemical composition, made from inorganic processes, homogenous solids, highly ordered atomic arrangement. Innermost electron shell holds a max of 2 electrons: second and third shells hold a max of 8 electrons, isotopes: Isotopes- different number of neutrons and protons which lead to a different atomic weight. Ionic bond- one atom loses an electron to another atom: atom becomes charged = becomes an ion, covalent bond- electrons are shared rather than exchanged (ex. Diamonds contain covalent bonds: crystals have 3-d molecular structures: Calcite and: major mineral groups (6): ( silly" sally can"t save her own self) Aragonite: silicates, sio4, dominate mineral group in igneous, sedimentary, and metamorphic. 4- tetrahedral rocks: most crystallize at high temperatures. 2- (attached to positive ions: carbonates, co3, soft, light colored, mostly sedimentary, but includes marble (a metamorphic rock) Includes calcite, aragonite, and dolomite: sulfates, so4.
