Yes, it's the red 'gravel' in the Nether, most of the scenery is made out of it.
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Yes. You can find Nerherrack burning naturally no problem in the Nether. There's a ton of buring netherrack there. Minecraft is Awesome :D
Yes. Unless you put it out.
Yes, in the Nether Zombie Pigmen spawn on the netherrack but I don't think they spawn on Netherrack in the Overworld.
As far as I'm concerned, you cannot make a pokeball. I have been playing minecraft ever since it came out, but maybe you could make a non-usable one our of Netherrack (underworld "dirt") and blocks of iron. For the tiny clasp, you could use obsidian.
The only way to keep a fire going indefinitely is to get a block of netherrack, if these are lit on fire, the block is neither consumed, nor extinguishes.
get a nether portal and use netherrack
There's no reason why it should. Netherrack ignites when fire is used on it, 'charge' from levers or redstone circuitry does not ignite it.
Netherrack can't be crafted into anything, but because mining it is so fast, it makes it an easy to use material for scaffolding while building other things.
You can use Flint and Steel. Remember though that while Netherrack is flammable and burns constantly, the fire from it will not spread to neighbouring Netherrack, nor does lava ignite it. You'd have to use Flint and Steel on each individually.
Umm, if you mean nether bricks then you will have to use a nether reactor. While using it you will be encased in netherrack which you can mine then smelt to turn in to nether brick items, then craft them like normal bricks. If you have recently used it then just mine the netherrack. If you have used it prior to 0.6.0, then it makes obsidian not netherrack and you will have to use it again
You cannot get marble without a mod. However, there is quartz. You can find this in the nether. There will be white pieces in the netherrack. If you see that, it is nether quartz ore. Mine is and then place it in 2x2 crafting spaces to make quartz blocks. Hope this helped.
You need to have the Herobrine mod on and you need 9 gold 1 netherrack 1 herobrine totem 4 redstone torches and a flint and steel.
It is not part of any crafting recipe, you use it to set fire to things. You could build a fireplace for example with Netherrack inside, and light those. Another common use is to open a Nether portal once the frame has been constructed.
No minecraft is not on the 3ds but there have been many ideas for it and I don't see why one day it could not be implimented.
The Nether
Minecraft is not see through?
They can if the developers see it and see it as a good idea.