What was in this joint.?

My brother bought this weed from some guy he knows, he's never bought from him before but he bought it already rolled in joint White Widow. I opened the joints to re roll them since they were poorly rolled and when I opened it there was a whole bunch of white stuff that poured out of it. The guy told my brother when he brought it there was a little cocaine, but I don't believe it was cocaine. It looked funny so I was skeptical. The white stuff wasn't in powder form, some of the pieces had a reddish top to them and when I tasted it, it tasted funny. I've never seen cocaine in person but, what I know it's tasteless. I don't really know how to describe it but was a little soapy with a nasty aftertaste. If anyone has a clue to what was in it please let me know. Even if you're not sure please let me hear some of your ideas as to what it might be.