This mod was submitted by the author himself who has this to say about the mod in his MinecraftForum thread:

This is my first mod, which adds one new ore, one ingot, a pickaxe, a sword, one block, and a lightning bolt(special item). The mods name is Andy’s Mod because my name is Andy, and the current version is 1.3.1.  This mod requires Minecraft Forge #684 or higher. The name of the tier of tools is Andium. The tier of the Andium tools is higher than diamond, and the ore spawns in veins of 8 with 6 veins per chunk. I’m not sure if I will continue this, but if you guys like I will. Feel free to give me suggestions and feedback.

I really like the simplicity of this mod, it’s a relatively small adjustment to the game which is ideal if you don’t want to radically modify the game but would like something a little different.  Give it a shot and let everyone know what you think in the comments!

As mentioned above, this mod requires Forge API.