ENVS 2250 Lecture Notes - Lecture 3: Metamorphic Rock, Pumice, Ion
18 Oct 2017
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Document Summary
Inorganic: solid, definite chemical composition (important, crystalline structures(important) Some rocks consist of non-mineral matter (no crystalline structure) ie. coal obsidian and pumice. There are slightly over 100 rock forming minerals. Granite is an example of a rock which consists of multiple several mineral. Fled spar is common in igneous and metamorphic rocks. Elements on the periodic table 1-94 occur naturally the rest are synthesized in a lab. Within earths crust: oxygen (47%, silicon (27. 7%, aluminum (8. 1%) Most minerals are compounds (meaning they contain more than 1 chemical compound), native elements only have 1 chemical compound. Ionic bonds one atom donates electron and becomes and a cation (+) and the other which attracts the donated electron becomes and anion (-). Hydrogen bonds- hydrogen atoms are attracted to oxygen in another molecule. Regular arrangement of atoms in a mineral, which is characteristic of this mineral. Affects many properties of minerals e. g. crystal form, cleavage and.
