I wouldn’t throw it away...most likely there is gold content in there to be had, but its tied up and attached to other minerals that makes it difficult to profit from. Best as a specimen.
I'm afraid I'm gonna give the same answer most here have. Probably gold in it but it doesn't look like gold to me. Looks almost like some kind of mica. It still may contain trace amounts of gold but I think it's going in the cool rock category.