<p>Probably not. While the interior of Earth easily exceeds the <a href="https://physicsworld.com/a/superionic-ice-phases-could-explain-unusual-magnetic-fields-around-uranus-and-neptune/" rel="nofollow noreferrer">40 GPa</a> pressure required to make superionic ice and we know now that tectonic processes can cycle water deep into the mantle, the temperature profile is likely hot enough to keep the water in a supercritical fluid state. The water may be hot enough in the deep mantle to undergo significant ion formation whether solid or fluid.</p>
<p>The supercritical water may be included into diamonds, which retain sufficient internal pressure to <a href="https://earthscience.stackexchange.com/a/21118/20607">condense the water as Ice VII</a> when they come to the surface and cool off.</p>

CC BY-SA 4.0
2022-08-22T23:30:37.657Z
2022-08-23T11:37:14.207Z
2022-08-23T11:37:14.207Z
Oscar Lanzi
<p>I recently researched about <a href="https://www.google.com/search?q=superionic%20ice&amp;rlz=1CASFJY_enUS1020&amp;oq=Superionic%20ice&amp;aqs=chrome.0.69i59j0i512l3j0i22i30l5j0i15i22i30.2684j0j9&amp;sourceid=chrome&amp;ie=UTF-8&amp;safe=active&amp;ssui=on" rel="nofollow noreferrer">Superionic Ice</a> which basically is Water under so much pressure and heat that it turns into a black hot ice. I read this <a href="https://www.livescience.com/stable-superionic-ice-made-first-time" rel="nofollow noreferrer">article</a> about it too. I found out Superionic ice exists inside Earth but I cant make sense of how it got into the core, considering that any water in the ocean basically is sealed off from at least below the mantle because it would immediately evaporate causing bubbles of the vapor to rise until it cools again.</p>

CC BY-SA 4.0
2022-08-23T04:27:58.317Z
Under enough pressure it CAN"T evaporate, that is why we use phase diagrams but cause heat AND pressure effect the phase of a material. Above a certain pressure its impossibly for water to become a gas.
John
CC BY-SA 4.0
2022-08-23T13:14:18.893Z
@John Wouldn't it evaporate before it reaches the no evaporation state?
Tardy
CC BY-SA 4.0
2022-08-23T13:28:41.640Z
How? water is forming at those pressures, it is literally being chemically produced by the breakdown of hydrate minerals. its not actual H2O yet.
John
CC BY-SA 4.0
2022-08-23T13:31:55.267Z
@John Oh, I see, Sorry!
Tardy
<hydrology><geothermal-heat><core><pressure>
Is there superionic ice in the earth? and how did it get there?
Tardy
# Is there superionic ice in the earth? and how did it get there?

(Asked by: username_0 on 2022-08-22)

I recently researched about [Superionic Ice](https://www.google.com/search?q=superionic%20ice&rlz=1CASFJY_enUS1020&oq=Superionic%20ice&aqs=chrome.0.69i59j0i512l3j0i22i30l5j0i15i22i30.2684j0j9&sourceid=chrome&ie=UTF-8&safe=active&ssui=on) which basically is Water under so much pressure and heat that it turns into a black hot ice. I read this [article](https://www.livescience.com/stable-superionic-ice-made-first-time) about it too. I found out Superionic ice exists inside Earth but I cant make sense of how it got into the core, considering that any water in the ocean basically is sealed off from at least below the mantle because it would immediately evaporate causing bubbles of the vapor to rise until it cools again.

**Tags:** hydrology, geothermal-heat, core, pressure

> **Comments:**
> **username_1**: Under enough pressure it CAN"T evaporate, that is why we use phase diagrams but cause heat AND pressure effect the phase of a material. Above a certain pressure its impossibly for water to become a gas.  
> **username_0**: @username_1 Wouldn't it evaporate before it reaches the no evaporation state?  
> **username_1**: How? water is forming at those pressures, it is literally being chemically produced by the breakdown of hydrate minerals. its not actual H2O yet.  
> **username_0**: @username_1 Oh, I see, Sorry!  

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## 1 answers

### Answer by username_2 on 2022-08-22. Score: 2 | Accepted answer

Probably not. While the interior of Earth easily exceeds the [40 GPa](https://physicsworld.com/a/superionic-ice-phases-could-explain-unusual-magnetic-fields-around-uranus-and-neptune/) pressure required to make superionic ice and we know now that tectonic processes can cycle water deep into the mantle, the temperature profile is likely hot enough to keep the water in a supercritical fluid state. The water may be hot enough in the deep mantle to undergo significant ion formation whether solid or fluid.

The supercritical water may be included into diamonds, which retain sufficient internal pressure to [condense the water as Ice VII](https://earthscience.stackexchange.com/a/21118/20607) when they come to the surface and cool off.


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