Binary Phase Diagrams - Eutectic Behavior 4. On the diagram shown below of the anorthite (CaAl2Si208) - diopside (CaMg2Si206) system, outline each liquidus line in green, each solidus line in brown. 1700 1600 Liquid 1557 1500 1400 An + L 1391 Di + L 1300 1270 E An + Di 1200 90 70 50 30 10 An CaAl,Si, OG Di CaMg, Si,O 5. Using Figure 1starting at 1650C and 20% An (note scale reads from right to left) trace the cooling behavior of the melt down to 1200C. Show the path followed by the liquid in red, the path followed by the solid in blue. Then answer the following questions: A. At what temperature does the first crystal appear? B. What is the composition of the first crystal? C. At what temperature does the first crystal of anorthite appear? D. At what temperature does the liquid disappear? E. What is the composition of the final liquid phase? F. What is the composition of the final solid mixture? (Phases present and % of each) A321 Mineralogy Spring 2022 6. Using the figure above, starting at 1200C and 85% An, trace the behavior of the solids up to 1700C. Indicate the paths followed by the solid and liquid as in question 5. Then answer the following questions: A. At what temperature does the first liquid appear? B. What is the composition of the first liquid? C. At what temperature does the diopside disappear? D. At what temperature does the anorthite disappear? E. What is the composition of the final solid phase? F. What is the composition of the final liquid phase? 2010 Oquiel D Melt Cliquebas) E 1600 bigwd+ solid Meer -sabit (transition) 1600c A F 8 Temp Coch & 1400C Soliclidis 10 Ecrystalse B 1200 0 100% 40% 60% 80% 15 fedioy. mga Siou weight % forsterite beharros composition of 'B' as it is heated from 1320 to lapos 301 Selidus the temp. below which the substance is stable in the solid state Alquidus- the temp. aboue which the substance is stable in the lquid state. B is initially in Sold (phase) or in Sabic solution at B 43% out of fesioy & 57%. ct of mga Sion. A The first liquid will appear at around 1 6ooc tempo 7 B) The composition of the liquod of this. Jemp 18 43% cot fe c) Composition of Sold at this temperature is about 85%by -wt. d) As the temperature further. In diesses, the substance.will