BlockOrithium -

package net.minecraft.src;
import java.util.Random;

public class BlockOrithium extends Block
{
	protected BlockOrithium(int x, int y)
	{
		super(x,y, Material.rock);
	}

	public int IdDropped(int x, Random rand, int y)
	{
		return mod_Orithium.orithium.blockID;
	}

	public int quanityDropped(Random rand)
	{
		return 1;
	}
}

Mod_Orithium -


package net.minecraft.src;

import java.util.Random;

public class mod_Orithium extends BaseMod
{
	public static final Block orithium = new BlockOrithium (180,0).setHardness(2F);

	public mod_Orithium()
	{
		ModLoader.RegisterBlock(orithium);
		ModLoader.AddName(orithium,"Orithium");

		orithium.blockIndexInTexture = ModLoader.addOverride("/terrain.png", "/Orithium.png");
	}

	public void GenerateSurface(World world, Random rand, int baseX, int baseZ)
	{
		for(int x = 0; x < 30; x++)
		{
			int Xcoord = baseX + rand.nextInt(16);
			int Ycoord = rand.nextInt(70);
			int Zcoord = baseZ + rand.nextInt(16);
			(new WorldGenMinable(orithium.blockID, 70)).generate(world, rand, Xcoord, Ycoord, Zcoord);
		}
	}

	public void load(){};
	public String getVersion()
	{
		return "1.1";
	}
}