Skyrim: Bring a Dwarven Battleaxe of Fire to Calcelmo

When you acquire the Dwarven Battleaxe of Fire you'll get some mail from the messenger. Somehow Calcelmo knows that you've gotten a battleaxe! He wants it to study apparently (at least that's what he claims. To take the Battleaxe to Calcelmo first travel to Markarth, it's all the way on the left side of the map.