GEOL107 Lecture Notes - Lecture 2: Amphibole, Plagioclase, Muscovite
27 Jul 2018
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Document Summary
Silicate minerals: electrons and bonding of atoms, the silica tetrahedron, structures of silicate minerals. ** be sure to bring the minerals lab outline to your lab. Available at course sakai site under resources/lab outlines folder. Bonding: ionic bonds: electrons would either lose or gain an electron to become stable. Silicate materials: most important group of rock forming materials, same internal structure, 1 central silicon atom, surrounded by 4 oxygen atoms, 4 oxygen atoms bond to one silicon, structure is called tetrahedrom. Oxides: building block oxygen anion, will attract positively charged cations, adds rust, example: hematite. Sulfides: building block sulfur, neg charged material ionic state, ex: pyrite. Sulfates: building block sulfate four oxygens bonded to one sulfur, ex: gypsum, one plain of cleavage only break on one part of it, looks like halite or calcite, on quiz soon. Native elements: building block 1 element, ex: gold or diamond. Halides: building block halogen elements (cl, i, br, f, ex: halite.
