Code

package net.minecraft.src;

import java.util.Random;

public class mod_MyFirstBlock extends BaseMod {

public static final Block myFirstBlock = new BlockStuff(170)
		.setUnlocalizedName("oreNightmare")
		.setCreativeTab(CreativeTabs.tabBlock)
		.setHardness(.5f);




	@Override
	public String getVersion() {
		// TODO Auto-generated method stub
		return "Version 1.0";
	}

	@Override
	public void load() {
		// TODO Auto-generated method stub
		ModLoader.registerBlock(myFirstBlock);
		ModLoader.addName(myFirstBlock, "Nightmare Ore");
	}



	public void GenerateSurface(World world, Random rand, int x, int z){

		for(int rarity = 0; rarity < 1000; rarity++){

			int xCoord = x + rand.nextInt(16);
			int yCoord = rand.nextInt(70);
			int zCoord = z + rand.nextInt(16);
			(new WorldGenMinable(myFirstBlock.blockID, 0, 32)).generate(world, rand, xCoord, yCoord, zCoord);
		}




	}

public int quantityDropped(int par1) { return (1);
}
public int idDropped(int i, Random par2random, int j) { return mod_MyFirstBlock.myFirstBlock.blockID;
}
}