GEOL 103 Lecture Notes - Lecture 20: Open-Pit Mining, Environmental Health, Remote Sensing
Document Summary
Mineral and rock resources: 9 elements account for 99. 7% of the earths crust, oxygen, silicon, aluminum, iron, calcium, sodium, magnesium, potassium, titanium. Concentration factor (cf: cf=cd/cc, cd: concentration in deposit, cc: average crustal concentration, the higher the cf, the richer the deposit, reserves: ore deposits that have been identified but not yet exploited. Plate tectonic boundaries: these o(cid:272)(cid:272)ur along plate (cid:271)oundaries , assist in creating ore deposits, relationship between magmatic and metamorphic activities and the formation of ore deposits. Kimberlites (diamonds: formed at high pressures in mantle, brought up rapidly to crust, pipe like intrusive bodies. Us mineral consumption: contains less than 5% of worlds pop, demand greater than supply, reserves for many metals projected to last only a few decandes. Mineral resources: iron: most heavily used metal, deposits found all around the world, easy to mine, easy to smelt from ore.
