ERSC 1F90 Study Guide - Quiz Guide: Cross-Bedding, Fluorine, Crystal Habit
9 Apr 2015
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Document Summary
Chemistry is an integral part of geology- without elements, there aren"t minerals, rocks and planets. Elements control mineralogy and all their physical properties. Mineral classes (most abundant element is oxygen) chemically bonded to form a particular crystalline structure. A mineral consists of an ordered array of atoms. Physical properties: colour, hardness, crystal habit, fracture, lustre, density (specific gravity), cleavage and magnetism (can it be bent), double refraction, taste, small, elasticity. Other properties: magnetism, reaction to hydrochloric acid, malleability. Mohs scale determines hardness of minerals on a scale of one to ten. Role of pressure: pressure increases with depth heat from planet. Partial melting occurs through: decompression melting mid-ocean ridges, heating of mantle hot spots (eg. hawaii, addition of volatiles subduction zones. Granite, obsidian, rhyolite and pumice all have the same chemical. Felsic, intermediate, mafic and ultramafic rocks quartz bowen was canadian. Bowen"s reaction series: how minerals crystalize from magma; olivine to rock.
