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Unformatted text preview: cations, anions polymorph Rocks, Minerals rock cycle extrusive (volcanic) rocks intrusive (plutonic) rocks pyroclastic igneous rocks hotspot pluton isotherm active, extinct, dormant volcano viscosity cinder cone, composite, shield volcano pyroclastic caldera nue ardent mineral classes lahar fractionation dike, sill bonding (metallic, ionic, covalent, hydrogen) GY 111 Essay Question For Lecture Test One (2010) In addition to this word list, I present you with one of the 3 essay questions that will appear on Lecture test 1. 1) There are a lot of different silicate mineral subclasses. What are they, how do they differ and why are they so prevalent in the earths crust?. Use sketches to augment your answer ....
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- Fall '11