@SGRaaize:
Its obviously a Logia, though. The point of Logias is that not only are they can create, manipulate and become a certain element
Luffy is rubber, he can't create or manipulate other rubber, though
Mr 1 is blade, he can't create or manipulate other blade, though.
Mr 3 can create wax, he can't manipulate or become other wax, though.
Magellan can create poison, he can't manipulate or become other poison, though.
We've seen Coribou creating and becoming mud, so its pretty obvious he's a Logia
Actually it is. Logias are the only type to have the three. And we have seen Coribou becoming in defense, but his suffocating of the marine is not evidence that he can create.
I'm not saying he can't be a Logia, but at this point it could very well be that he transformed his hand into Mud or whatever and shaped it to suffocate that marine. This says nothing on create.
If he could create quicksand or mud with those absorption properties then why didn't he just use it to bury everyone around him? Or is it that he simply likes to waste his and his crew's time?
All I'm saying is that even though he could turn out to be a Logia, his ambiguous remark on it as well as the fact that he doesn't just go around absorbing people into the ground like he did with that cannonball or like how Blackbeard does it, to me are suspicious indicators that he is not a Logia.