Is this bannable?

Is it bannable to have this ammount of 6 stars materials? I was doing a play with other mission in Stonewood yesterday and a Master Chief started dropping those to me like it was nothing.

I know it's useless and a waste of space but I think it's neat to have it in my inventory. I also saw some people saying it's not a problem to keep some, but I don't know about 15 stacks of them.