GEOL 1250 Lecture Notes - Lecture 5: Ionic Radius, Kimberlite, Chemical Kinetics
25 May 2016
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Document Summary
Ex. diamond is all carbon high pressure. Graphite is all carbon low pressure. Ex. bonds are strong, does not change. Diamonds move to surface of the earth very quickly volcanic eruption m(kimberlite) Each ion has a characteristic and constant size: its ionic radius. Rock forming minerals (silicate) - not important economically. Sio4 tetrahedron is the basic building block of all silicate. Polymerize by sharing oxygen with other tetrahedral. Carbon bonds with itself to make complicated minerals in different ways. Silicon can do the same but cannot bond with itself. Isolated tetrahedra - just one triangle - mantle. Continuous chains - double chain joined by cations - ocean crust. Continuous sheets one set of tetrahedra continuously combining with chains - continental crust. 3 dimensional tetrahedra - no unsatisfied bonds - bonded covalently. Naturally formed solid that is part of a planet. Sedimentary - accumulation of loose rocks on surface of the earth.
