Well, Firestorm or the Molecule Man probably would have no trouble doing something to it
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don't forget Element Lad

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Actually, I know next to nothing about him. Can he control only elements? It was stated above adamantium doesn't consist of any element on the periodic table. So, would he be able to affect it?

As far as wolverines claws go, I absolutely HATE seeing him cut through anything of major substance, regardless of the material. Sure the claws are razor sharp and made out of the hardest substance known to man. Logan STILL isn't strong enough to cut through an oak tree, never mind an I-beam or solid rock.

I could take a razor sharp steel katana and swing with all of my might and I will NOT cut through a 1/2 " iron bar in one swipe, and certainly will do nothing more than chipping a stone slab.. I don't care if the adamantium is harder than the stone or the Iron bar, it is just dumb.

Monte - that's the "like a hot knife through butter" principle. The scoop melts the ice at the "cutting"point. Which is why it's easy. In order for Wolverine's claws to work in the same way they would have to emit a form of radiation that disturbs the molecular cohesion in the steel or whatever he's trying to cut. I don't think that's a quality of adamantium.