Earth Sciences 1022A/B Lecture Notes - Lecture 20: Continental Crust, Magnesium, Hydrothermal Vent
20 Dec 2018
School
Department
Course
Professor
Document Summary
Natural resources: resource: endowment of materials that are useful to people and are ultimately available commercially. In our culture, the term metal generally refers to fusible metals metals of moderate hardness that can be fused with other metals to for alloys (metal mixtures) In turn, we commonly classify these fusible metals in two main categories: 1. Precious metals: metals of high intrinsic value i. e. silver, gold, platinum desirable for the manufacture of electrical components due to their resistance to corrosion and oxidation (except silver) 2. 1% magnesium (mg: all other elements: 1. 5 , a majority of the familiar metals used in society (aside from aluminum and iron don"t even appear on the list. Abundance of metals significant to society: base metals (other than iron, aluminum, and titanium) in weight % of continent crust precious metals in weight % of continental crust. Concentration of the metal(s) of interest (due to enrichment: 2.
