GEOL 1330 Lecture Notes - Lecture 3: Valence Electron, Feldspar, Amphibole
20 Jul 2016
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Document Summary
A naturally occurring consolidated mixture (or aggregate) of minerals. A substance that cannot be decomposed into a simpler substance by ordinary chemical or mechanical means. The smallest individual particle that retains the properties of an element. Formation of a compound by combining two or more elements. Atoms gain or lose outermost(valence) electron to form ions. Both ionic and covalent bonds typically occurs in the same compound. Valence electrons are free to migrate among atoms. Atomic number: the number of protons in the nucleus of an atom. Atomic mass/weight: the number of protons and neutrons in the nucleus. Isotopes: elements with the same atomic number but different atomic masses. Minerals with the same composition but different crystalline structure. The external expression of a mineral"s orderly internal arrangement of atoms. Other descriptive term include vitreous(glassy), silky, or earthly. Generally unrealizable for minerals identification, due to the types of element in the crystal structure in terms of bonding and the size of ions.
