EAS105 Lecture Notes - Lecture 1: Conchoidal Fracture, Sodium Chloride, Albite
7 Mar 2018
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Chapter 3, p. 60-85 the changing earth 7e. Minerals are nothing more than chemical compounds that conform to the above definition. Atoms, ions, ion groups and molecules are bonded to make stable chemical compounds; there are several interparticle bond types; we will highlight three of them: ionic bond. Cations and anions are connected by a strong electrochemical bond; a greater variety of minerals use ionic bonds than any other type. Both the cation and anion achieve a stable electron configuration, e. g. na+ + cl- nacl (halite or salt: covalent bond. Electrical asymmetry of bonded atoms and molecules produces weak residual or surface charges; characterized: these are weak bonds that are easily broken. Different minerals, such as diamond and graphite, that have the same chemical composition but different crystal structures, are called something: polymorphs (many forms); they will have different physical properties as a result: crystals.
