Help! What am I?

Well fellow fabric fiends, I got another haul from FabricMart, and got another amazing mystery bundle.  In it were a couple of fab knits, some khaki twill, an amazing piece of Italian linen, and a yard and a half of suiting weight twill.  I'm not sure what it is though, so I thought I'd see if any of y'all can help.

This is an unedited photo taken in natural light.  It's a bit overcast today, so the colors IRL are more vibrant.  What appear to be the warp threads are olive green.  The weft threads vary from light cream to dark beige. It does feel a tiny bit itchy, but has a sheen. The yardage is only 46 inches wide.  I burn tested it (my first time!) and it smelled like hair, was difficult to light and extinguished when the flame was removed.  It burned orange and left a crumbly ash.  My initial thought was that it was wool, but it isn't all that itchy, and it has a silk-like sheen. Perhaps it is a wool-silk blend?  Or do I just need to buy more high quality wools so that I recognize one when it crosses my cutting table?  What do you think?