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Not only TNT but can creepers destroy obsidian? i know gasts can because i got stuck in the nether in my first profile but, i want to make a city wall that cannot be blown up by creepers or greifers. i also wish to make an underground maze that you cannot escape untill you find the diamond pickaxe at the end of it and i don't want the creepers messing up the maze while you are in it. so if anyone knows please respond so i know if i should use my time to mine obsidian. thank you.

Obsidian is blast proof. It can't be destroyed by TNT or creepers.

And dear god my eyes!

ghasts also cannot destroy obsidian. although they can blow out your portal.

oh yeah! and i just highlighted the words gold wrote because that yellow was raping my eyes. it makes it white on a black background

Obsidian cannot be destroyed by anything at all other than the player himself, mining. And even then it take fooooooooorever without a diamond pick.

EDIT: Oh yes -- I think you can also throw it in lava to destroy it.

coulda swore there was a 'special' amount of TNT, but the possibility is astronomical.

just destroy obsidian by punching it with hand! 3 hours later goldbrine: still trying to break 1 piece of obsidian!

Quote from lister101

it can on be destroyed by an explosions via hacks. 2000+ TNT focused into ONE BLOCK, can destroy obsidian. and for bedrock... 16,000,000

hmm will try destroy all bedrock with 99999999999999999 tnt lol

Quote from lister101

it can on be destroyed by an explosions via hacks. 2000+ TNT focused into ONE BLOCK, can destroy obsidian. and for bedrock... 16,000,000

I have no idea where you got that information, but it's wrong. Obsidian can't be destroyed by TNT, and bedrcok can't be destroyed in-general.

Quote from xRezid

I have no idea where you got that information, but it's wrong. Obsidian can't be destroyed by TNT, and bedrcok can't be destroyed in-general.

no this info is correct and is a known exploit, if you don't know where the info is then your too new to the scene to even correct people.

Only Chuck Norris can decide the fate of obsidian.

Quote from kaelvin

no this info is correct and is a known exploit, if you don't know where the info is then your too new to the scene to even correct people.

lol get em

Alright, guys. You made me so curious, I (being the nerd I am) did some research. I'm pretty sure my updated information is right, (though I don't expect you'll probably want to stop arguing, anyway...

I'll probably also post a video about this, soon, because it's kinda confusing...

Here is what I found...

SUMMARY:
Tnt can't break obsidian, bedrock, or even water blocks without hacks.

TECHNICAL STUFF:

Obsidian has a blast resistance of 6,000 (And bedrock is 18,000,000, if you care). Since this is a numeric value, it means the game coders didn't actually hard- wire it into the game that it is completely invincible (though the number is so high, it practically is.). Therefore, with a high enough explosion power, it is actually possible to break it. However, It would require an explosion power not a achievable in the game without using hacks (And even then, your game may crash if your computer isn't powerful enough. But if it did work, such an immense explosion would literally annihilate your entire world, leaving you with a bunch of strange carved lines throughout every loaded chunk, and would probably instant- kill you, no matter where you were, provided both the explosion and you were in loaded chunks.).
The highest explosion power found naturally is a numeric power of 7 (upon spawning a wither). Tnt has an explosion power of 4.
The formula that Minecraft uses to determine whether an explosion is powerful enough to overcome a block's blast resistance value is as follows: ((1.3 × power − attenuation steps × step length × 0.75)/step length − 0.3) × 5 = Min Blast force
This is important, because it means that the terms "Explosion Power" and "Blast Resistance" are not directly proportional. For example, Diamond ore has a blast resistance of 15, yet Tnt's explosion power is 4, and still breaks it, because after running this formula with the correct variables, Tnt's actual Blast Force is approximately 77.67 -- A value much higher than 15. (Someone might need to check my math on this. It's actually REALLY complicated...)
So this means that you'd need to focus the explosive power of about 80 Tnt (or an explosive power of 320) on a single block of obsidian to break it. BUT, in fact, even if you DID manage to simultaneously blow up 80 Tnt in the exact same spot, it wouldn't break the obsidian, because multiple close explosions have no cumulative effect on the destruction of a block. This means you can't add up the powers from different Tnt blocks. You'd actually need to cheat to get an explosion with a power greater than seven. Be careful if you try this, though. if your computer can't handle it, it could do anything from crashing your game to corrupting your world.

If you really want to try it, here's a command you can input into the chat bar to get a fireball you can hit into obsidian and break it. It's a little excessive with the power, just to make sure it does the job. I tested it. It works.:

/summon Fireball ~ ~2 ~ {ExplosionPower:500,direction: [0.0,0.0,0.0]}

Have fun!

Sources:
((http://minecraft.gamepedia.com/Obsidian))
((http://minecraft.gamepedia.com/Bedrock)
((http://minecraft.gamepedia.com/Explosion))
((http://minecraft.gamepedia.com/TNT))
((http://minecraft.gamepedia.com/Diamond_Ore))

Quote from Ethan_Tison

If you really want to try it, here's a command you can input into the chat bar to get a fireball you can hit into obsidian and break it. It's a little excessive with the power, just to make sure it does the job. I tested it. It works.:

/summon Fireball ~ ~2 ~ {ExplosionPower:500,direction: [0.0,0.0,0.0]}

This topic is in the Xbox 360 edition of Minecraft. Minecraft 360 doesn't have chat bar or commands. That part would only apply to the PC version, which in my opinion, is way better.

I don't get the rest. My brain sort of exploded in the process of reading it

But that just proves that you did a good job.

Quote from SwashPonchos45

[/size][/background][/size][/font][/color]

[font=comic sans ms', cursive]This topic is in the Xbox 360 edition of Minecraft. Minecraft 360 doesn't have chat bar or commands. That part would only apply to the PC version, which in my opinion, is way better.[/font]

[font=comic sans ms', cursive]I don't get the rest. My brain sort of exploded in the process of reading it [/font]

[font=comic sans ms', ', cursive]But that just proves that you did a good job. [/font]

Ah, I see... Sorry- Missed the part about it being in the Xbox section.
Thanks for the compliment! I worked hard...

I know this post is old, but you can break obsidian. I did it on my Bukkit server. If you have WorldEdit on Bukkit then you can do "//hsphere 46 6 or //sphere 46 6" you can make a hollow (hsphere) or a non hollow sphere made of tnt, that has a radius of 6. The 46 is the block number and the 6 is the radius of the sphere. I made a sphere of tnt with a radius of 6, on top of an obsidian wall. I was testing out cannons and stuff like that and I launched some tnt into the sphere which created a series of flying explosions. I tried doing this before by being nearing the explosion and my server crashed. This time I stood far away, and it looked fantastic btw, and after the explosion, 75% of the obsidian wall was destroyed. Now there were 1640 blocks created when it said I made the sphere. So that's 1640 blocks of tnt that broke about 30 blocks of obsidian. Possible, but the number is really high.

Quote from DatGuy251

-Snip-

You seem lost....

Quote from DatGuy251

I know this post is old, but you can break obsidian. I did it on my Bukkit server. If you have WorldEdit on Bukkit then you can do "//hsphere 46 6 or //sphere 46 6" you can make a hollow (hsphere) or a non hollow sphere made of tnt, that has a radius of 6. The 46 is the block number and the 6 is the radius of the sphere. I made a sphere of tnt with a radius of 6, on top of an obsidian wall. I was testing out cannons and stuff like that and I launched some tnt into the sphere which created a series of flying explosions. I tried doing this before by being nearing the explosion and my server crashed. This time I stood far away, and it looked fantastic btw, and after the explosion, 75% of the obsidian wall was destroyed. Now there were 1640 blocks created when it said I made the sphere. So that's 1640 blocks of tnt that broke about 30 blocks of obsidian. Possible, but the number is really high.

Hmm, Interesting! According to the minecraft wiki, that doesn't seem possible, but I know mistakes can sometimes happen... Are you sure the explosions actually destroyed the obsidian, or could the actual placing of the tnt sphere have replaced some of the blocks? ...To be quite honest, I've got almost no knowledge concerning the Xbox version, considering that I myself don't actually own an Xbox, and therefore can't conduct tests of my own, so I'm just going to have to be content with the results of your findings.

Quote from Badmichael

I thought bedrock had a blast resistance of -1, am I wrong?

Not according to the wiki on this page : http://minecraft.gamepedia.com/Bedrock
I mean, I assume that most, if not all of the game coding between Xbox and PC is reused for simplicity, so it is probably the same, but Mojang may have changed some things to make it cross- compatible between devices... But I'd say the wiki is a good bet about what the right information is, for just about any version of the game.

You can't destroy Obsidian with TNT unless you had Extreme Amounts of TNT. Even that could probably not destroy Obsidian.

Obsidian is immovable by anything except a Diamond Pickaxe. Well, you can also break it with anything else, but it will cease to exist instead of dropping.