# Kryptonite **URL:** \ **Category:** Miscellaneous and Personal Stuff I Must Share\ **Created:** [April 24, 2007, 8:13am UTC](https://boards.straightdope.com/t/kryptonite/401434 "2007-04-24T08:13:46Z")\ **Posts on this page:** 13\ **Page:** 1
**Author:** ![chowder](https://avatars.discourse-cdn.com/v4/letter/c/977dab/32.png) [@chowder](https://boards.straightdope.com/u/chowder)\ **Post date:** [April 24, 2007, 8:13am UTC](https://boards.straightdope.com/t/kryptonite/401434/1 "2007-04-24T08:13:46Z")
This according to BBC Ceefax: Kryptonite has been discovered in Serbia. But it’s white and not green 😕 Apparently it has all the qualities of “real” Kryptonite. What I want to know is how do they know this, to the best of my knowledge the stuff is a fictional mineral ---
**Author:** ![Mangetout](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/mangetout/32/19_2.png) [@Mangetout](https://boards.straightdope.com/u/Mangetout)\ **Post date:** [April 24, 2007, 8:32am UTC](https://boards.straightdope.com/t/kryptonite/401434/2 "2007-04-24T08:32:31Z")
Hmmm… It has all the qualities of real Kryptonite, except most of them. ---
**Author:** ![One\_And\_Only\_Wanderers](https://avatars.discourse-cdn.com/v4/letter/o/838e76/32.png) [@One\_And\_Only\_Wanderers](https://boards.straightdope.com/u/One_And_Only_Wanderers)\ **Post date:** [April 24, 2007, 8:34am UTC](https://boards.straightdope.com/t/kryptonite/401434/3 "2007-04-24T08:34:40Z")
From what I read it just has the same composition (almost) as the description on the box containging the kryptonite in Superman Returns. ---
**Author:** ![Polycarp](https://avatars.discourse-cdn.com/v4/letter/p/82dd89/32.png) [@Polycarp](https://boards.straightdope.com/u/Polycarp)\ **Post date:** [April 24, 2007, 11:11am UTC](https://boards.straightdope.com/t/kryptonite/401434/4 "2007-04-24T11:11:42Z")
C’mon, everyone knows that kryptonite (KrF[sub]2[/sub]) is a colorless gas above -60 C, and decomposes explosively in the presence of moisture. ---
**Author:** ![chowder](https://avatars.discourse-cdn.com/v4/letter/c/977dab/32.png) [@chowder](https://boards.straightdope.com/u/chowder)\ **Post date:** [April 24, 2007, 11:50am UTC](https://boards.straightdope.com/t/kryptonite/401434/5 "2007-04-24T11:50:27Z")
[QUOTE=Polycarp] C’mon, everyone knows that kryptonite (KrF[sub]2[/sub]) is a colorless gas above -60 C, and decomposes explosively in the presence of moisture. [/QUOTE] Which sort? white or green. It’s no use coming in here and posting stuff without giving us all the facts ---
**Author:** ![Mangetout](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/mangetout/32/19_2.png) [@Mangetout](https://boards.straightdope.com/u/Mangetout)\ **Post date:** [April 24, 2007, 12:04pm UTC](https://boards.straightdope.com/t/kryptonite/401434/6 "2007-04-24T12:04:52Z")
I don’t really know what all the fuss is about - Kryptonite is already in the [Periodic Table](http://www.bbc.co.uk/comedy/lookaroundyou/series1/period3.shtml) ---
**Author:** ![Der\_Trihs](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/der_trihs/32/233_2.png) [@Der\_Trihs](https://boards.straightdope.com/u/Der_Trihs)\ **Post date:** [April 24, 2007, 12:30pm UTC](https://boards.straightdope.com/t/kryptonite/401434/7 "2007-04-24T12:30:00Z")
[QUOTE=chowder] This according to BBC Ceefax: Kryptonite has been discovered in Serbia. But it’s white and not green 😕 [/QUOTE] [Wiki to the rescue !](http://en.wikipedia.org/wiki/Kryptonite) > [@](#): > > **White Kryptonite** > > Kills all plant life, whether Kryptonian or not. Induces decay immediately upon exposure, with a range of about 25 yards. ---
**Author:** ![CalMeacham](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/calmeacham/32/35_2.png) [@CalMeacham](https://boards.straightdope.com/u/CalMeacham)\ **Post date:** [April 24, 2007, 12:43pm UTC](https://boards.straightdope.com/t/kryptonite/401434/8 "2007-04-24T12:43:04Z")
> [@](#): > > Apparently it has all the qualities of “real” Kryptonite. Since the Properties of Kryptonite are that it’s Green , glows with an unknown type of radiation, and is fatal to natives of the planet Krypton, I don’t know what this sentence means. We don’t have any Kryptonians to try it out on, and I’ll bet it doesn’t give off unknown radiation. It ain’t green. That leaves glowing. As all comic-book geeks know, Kryptonite comes in various colors. Green is the default mode, with others being Blue (created by a Bizarro projector, and killing Bizarro supermen), red (passed through a cloud on its way here – has weird, unpredictable effects), gold (permanently removes super powers), white (kills plant life, as **der Trihs** has noted), and jewel (from the Jewel Mountains. Useful for hypnotiozing people and amplifying psi powers). There are also weird hybrids like Kryptonite X (A blend of Kryptonite and uranium). And Yerllow Kryptonite (which turned out to be a hoax) I don’t know where white kryptonite came from, or how they found out about its power. It was already in existence when in 1969 it cured Superman of a deadly infection. ---
**Author:** ![Hypno-Toad](https://avatars.discourse-cdn.com/v4/letter/h/b2d939/32.png) [@Hypno-Toad](https://boards.straightdope.com/u/Hypno-Toad)\ **Post date:** [April 24, 2007, 4:43pm UTC](https://boards.straightdope.com/t/kryptonite/401434/9 "2007-04-24T16:43:05Z")
As long as they keep it away from me. That Kryptonite stuff makes me weak and sickly. ---
**Author:** ![Tuckerfan](https://avatars.discourse-cdn.com/v4/letter/t/eada6e/32.png) [@Tuckerfan](https://boards.straightdope.com/u/Tuckerfan)\ **Post date:** [April 24, 2007, 5:00pm UTC](https://boards.straightdope.com/t/kryptonite/401434/10 "2007-04-24T17:00:05Z")
[This sounds strangely familiar for some reason.](http://boards.straightdope.com/sdmb/showthread.php?t=418037) ---
**Author:** ![mobo85](https://avatars.discourse-cdn.com/v4/letter/m/b19c9b/32.png) [@mobo85](https://boards.straightdope.com/u/mobo85)\ **Post date:** [April 24, 2007, 5:02pm UTC](https://boards.straightdope.com/t/kryptonite/401434/11 "2007-04-24T17:02:37Z")
[QUOTE=chowder] This according to BBC Ceefax: Kryptonite has been discovered in Serbia. [/QUOTE] “Are we going to Serbia, Mr. Lu-thor?” No, doesn’t have the same ring. ---
**Author:** ![Zebra](https://avatars.discourse-cdn.com/v4/letter/z/c0e974/32.png) [@Zebra](https://boards.straightdope.com/u/Zebra)\ **Post date:** [April 24, 2007, 9:25pm UTC](https://boards.straightdope.com/t/kryptonite/401434/12 "2007-04-24T21:25:38Z")
I wonder what they are wearing in Serbia? ---
**Author:** ![Johnny\_Hildo](https://avatars.discourse-cdn.com/v4/letter/j/bbce88/32.png) [@Johnny\_Hildo](https://boards.straightdope.com/u/Johnny_Hildo)\ **Post date:** [April 24, 2007, 9:50pm UTC](https://boards.straightdope.com/t/kryptonite/401434/13 "2007-04-24T21:50:31Z")
Well, according to _Superman III_, the chemical breakdown of Kryptonite is: Plutonium: 15.08% Tatalum: 18.06% Xenon: 27.71% Promethium: 24.02% Dialium: 10.62% Mercury: 3.94% Unknown: 0.57%