Question
Periclase:MgO
Protoenstatite:MgOSiO2
Forsterite: 2MgOSiO2
Spinel:MgOAl2O3
Mullite: 3Al2O32SiO2
Cordierite: 2MgO2Al2O35SiO2
Sapphirine:4MgO5Al2O32SiO2
Corundum:Al2O3
QUEST?ONS:
Q1) Show the Alkameyd Lines (pass only 1 Alkameyd line in the starting point of solid solutions)
Q2) Define Solid solutions with their respective solubility limits (x,y,z) and formulas
M Al2O3 = 102 g/mole, M MgO = 40 g/mole M SiO2 = 60 g/mole
Q3) Determine the eutectic and peritectic points by checking arrow�s directions, indicate with e,p,E,P (10P)
Q4) Indicate the phase boundary of two liquids in equilibrium and one polymorphic transformation including temperatures on the Figure
Q5) For a given composition of %10 SiO2, %73 Al2O3 and %17 MgO, what will be initial crystal to appear in a melt, final crystals and final solidification point, draw cooling path ?
Choice: Same question for a composition: %30 SiO2, %10 MgO, %60 Al2O3
Q6) The X ray analysis of solidified lavas of an unknown volcano indicated some amount of cristobalite, protoenstatite and cordierite phases, what was the approximate temperature of lava close to solidification? Why ?
Q7) Draw vertical section for MgO-Al2O3 to the bottom of the Figure in reverse
Totaly there are seven quesition about figure. If you do all question correctly, I will give you bonus point.
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