Introduction to Petrology Name Worksheet 4: Phase Diagrams 2 Component Phase with a eutectic-Use the phase diagram below to answer the following questions. Assume a starting melt composition of 70% anorthite/ 30% silica. a. At what temperature will the first crystal form? What will be the composition of that crystal? (2 pts) b. At
1400\deg Cwhat is the composition of the remaining mell? (1 pt) c. At what temperature will the last drop of melt solidify? What is the composition of that final mett? (2 pts) d. What is the total composition of the final rock produced from the initial melt? (1 pt)