magma crystallization

Question 1

what is crystallization

Answer 1

atoms or molecules are highly organized into crystal structures

Question 2

when does crystallization happen

Answer 2

when magma or lava cools, minerals solidify at different temperatures

crystallizing changes chemical composition as cooling progresses

e.g olivine that forms early in sequence can be mg rich, olivine forming later become fe rich

Question 3

what effects size of crystals

Answer 3

speed of magma cools

if cools quickly, finer crystals

if cools slowly, coarser crystals

Question 4

difference between solvent and solute

Answer 4

solvent = the dissolving medium

solution = substance being dissolved

Question 5

what is a solid solution

Answer 5

mixture of 2 crystalline solids with similar crystal lattices

crystal structure of the solvent remains unchanged by addition of the crystalline solute

same way salt dissolves in water, but with metals

Copper and zinc dissolve in each other and harden to give solid solutions called brass

can only be chemicals, not mechanically be removed

Question 6

bowen’s reaction series

Answer 6

describes temperature which minerals crystallize when cooled or melt when heated, doesnt work for every igneous system

Question 7

what is crystallisation behaviour

Answer 7

characteristics of crystallization sequence

Question 8

crystal behaviour examples

Answer 8

crystal surrounds another, it crystallized later

early forming crystallise commonly euhedral

big and small crystals coexisting, larger came first