Superionic and metallic states of water and the Anomaly of Water

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SUMMARY

The discussion centers on the existence of superionic and metallic states of water, particularly under extreme conditions such as high pressure. Notable references include the work by Demontis, LeSar, and Klein on high-pressure phases of ice, and the potential for ice VII, which is significantly denser than normal water. The conversation highlights the theoretical implications of freezing deep-sea water at 4°C and the formation of various ice phases, including ice IX and ice XI, under terrestrial and extraterrestrial conditions. The speculation that metallic water may contribute to Jupiter's magnetic field is also mentioned, indicating the broader implications of these water states in astrophysics.

PREREQUISITES
  • Understanding of phase diagrams, specifically the phase diagram of water.
  • Familiarity with high-pressure physics and materials science.
  • Knowledge of ice phases, particularly ice VII, ice IX, and ice XI.
  • Basic concepts of astrophysics related to planetary magnetic fields.
NEXT STEPS
  • Research the properties and formation conditions of ice VII and ice IX.
  • Explore the implications of superionic water in planetary science.
  • Study the role of metallic hydrogen and water in the magnetic fields of gas giants.
  • Investigate experimental methods for creating and observing high-pressure ice phases.
USEFUL FOR

Researchers in materials science, astrophysicists, and anyone interested in the exotic properties of water under extreme conditions will benefit from this discussion.

loocstkb
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https://www.wired.com/story/a-bizarre-form-of-water-may-exist-all-over-the-universe/
Black iceI knew the Black Ice Theories since around 1990
https://www.nature.com/articles/s41586-019-1114-6
-- Demontis, P., LeSar, R. & Klein, M. L. New high-pressure phases of ice. Phys. Rev. Lett. 60, 2284–2287 (1988). --

and since 1990 i have been asking myself:

if you have deepsea-water / water under great preasure
and you "Freeze" the water
the volumina of the water-cube go down.

there are theories that you "Freeze" the 4°C deepsea! water
(has absolutely nothing to do with freezing of a lake / surface)
possible or not?
As example from wiki:
"type VII ice which is 60 percent denser than normal water " … volume bigger/smaller?
 
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Cubic ice, 1c, is theorised, not sure if it is an experimental fact, might form in terrestrial conditions, but I think is only in small volumes and is metastable.

https://en.wikipedia.org/wiki/File:Phase_diagram_of_water.svg

At terrestrial lab conditions there is Ice IX ; https://en.wikipedia.org/wiki/Ice_IX

At higher pressures, all sorts of things are theoretically possible. I read that Jupiter's magnetic field has been speculated to be partly or significantly due to metallic water.

According to some texts, ice XI is possibly the more common phase of water in the universe; https://en.wikipedia.org/wiki/Ice_XI, in an orthrhombic form, but at much higher (TPa) pressures may form hexagonal metallic forms.

This is just what I have read, I have no background on this. Not read about your link before. Interesting.