Ice III

Alternative state of water ice

This article is about the form of water. For the German high-speed train, see ICE 3.

Phase diagram of water, showing the region where ice III is stable.

Ice III is a form of solid matter that consists of tetragonal crystalline ice formed by cooling water to 250 K (about -10 °C) at 300 MPa. It is the least dense of the high-pressure water phases, with a density of 1160 kg/m3 (at 350 MPa).[1] It has a very high relative permittivity at 117 and has a specific gravity of 1.16 with respect to water. The proton-ordered form of ice III is ice IX.[2]

Ordinary water ice is known as ice Ih (in the Bridgman nomenclature). Different types of ice, from Ice II to Ice XIX, have been created in the laboratory at different temperatures and pressures.

## See also[edit]

* Ice, for other crystalline forms of ice

## References[edit]

1. ^ "Ice III (ice-three) structure". 2012-02-04. Archived from the original on 2012-02-04. Retrieved 2023-06-06.
2. ^ doktorholz (2018-12-17). "Ice III and IX". The Fascination of Crystals and Symmetry. Retrieved 2022-10-17.

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Ice

The solid state of water

Crystalline types|

* Ih
* Ic
* II
* III
* IV
* V
* VI
* VII
* VIII
* IX
* X
* XI
* XII
* XIII
* XIV
* XV
* XVI
* XVII
* XVIII
* XIX

Ice block

Formations and
phenomena|

* Amorphous solid
* Anchor
* Black
* Clathrate hydrates
* Cap
* Cave
* Circle or disc
* Clear
* Crystals
* Dam (roof)
* Depth hoar
* Diamond dust
* Drift
* Dune
* Field
* Firn
* Fog
* Frazil
* Frost
* Frost heave
* Frost flower (sea ice)
* Glacier
* Glaze
* Hail
* Hair ice
* Iceberg (calving)
* Icicle
* Jacking
* Jam
* Nucleus
* Sheet
* Shove
* Spike
* Stalactites
* Macroscopic quantum phenomena
* Névé
* Needle
* Rime
* Sea
* Shuga
* Slurry
* Slush
* Snow
* Storm
* Superionic
* Volcano

Ice-related
activities|

* Bathing
* Blasting
* Blocking
* Climbing
* Fishing
* Rafting
* Sculpture
* Skating

Sports|

* Bandy
* Iceboating
* Cricket
* Curling
* Cycling
* Figure skating
* Ice hockey
* Ice racing
* Speed skating
* Short-track speed skating
* Tour skating

Constructions|

* Bar
* Bridge
* Hotel
* Igloo
* Palace
* Pier
* Pykrete
* Rink
* Road

Work|

* Cutting
* Icebox
* Icehouse
* Iceman (occupation)
* Pick
* Trade
* Yakhchāl

Other uses|

* Chips
* Core
* Cream
* Cube
* Pack

Ice ages|

* Glaciology
* Little Ice Age
* Pleistocene

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