I don't know where that praticle came from, but I think I know something about that particle in the picture.
To add onto Aicosu's reply (excuse me), that particle is probably a private file by the creator of that map, or it came from a material pack by another person. You can try to ask them to give you that file if you really want it. If it's private then do not make a very similar one because that can cause some problems.