It's plausible as an option, but the white crystals don't really have the right crystal habit and lustre (too dull). I think it's something else.
I tried to find out for sure, but couldn't find confirmation. I did find out that the textbook is the second edition of Introduction to Mineralogy by William D. Nesse.
Reflected light microscopy is a bit of a lost art. I was never taught it formally, and had to learn it later. You'll want to look for old used books, but for most silicates reflected light isn't the way to go. Are you looking at ore samples? Because that is really when it becomes useful.
This is my go-to book for mineral identification: https://www.amazon.com/dp/0199827389/ref=pd_lpo_sbs_dp_ss_3?pf_rd_p=1944687462&pf_rd_s=lpo-top-stripe-1&pf_rd_t=201&pf_rd_i=0199846278&pf_rd_m=ATVPDKIKX0DER&pf_rd_r=JH49Y9MM8HG4CQ9X8A0G