GEO 2163 Study Guide - Midterm Guide: Metallic Bonding, Ionic Bonding, Lead

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Geo2163 theory questions to lectures 1 through 6, + additional questions. Which are most common in minerals: most important in minerals. How do they vary with the rcation/ranion: cubic (8, octahedral (6, tetragonal (4, triangular (3) Name one example: when an ion of different charge is substituted and another substitution is needed to balance the charge. Lecture 2: which basic symmetry elements and operations do you know, rotation, reflection. Lattice defects: trace elements, explain, piezoelectricity: when pressure is applied to opposite ends of the crystal it develops charge at opposite ends. Lecture 4: name some common characteristics of native metals, no oxygen in formula, cubic, high density (except graphite, metals: soft, malleable, name four differences between graphite and diamond, transparency, hardness, density. Lustre: where do you find native sulphur and what is it used for, volcanic fumeroles and around salt domes. Name an example for each group: they are subdivided by their metal to sulphur ratio.

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