Using NEWMOD, calculate the diffraction patterns and determine the peak positions for the mixed-layer clay reflections listed below. Do this for each of the fractions indicated below. Calculate your pattern using Co K-alpha radiation over the range of 2-45° 2-theta, using 0.02° increments.
Hint: To simulate biotite, use a trioctahedral mica layer type, and vary the Fe per Si4O10.
Make an overlay plot of each set.
Calculate the line broadening Q values for the 0.9 fraction illite/EG-sat. smectite, R = 1. Do this for l = 1, 2, 3, 4, 5, 6, 7, 8.