Ice XII — is a metastable, dense, crystalline phase of solid water. It is a type of ice. It was first reported in 1996 by C. Lobban, J.L. Finney and W.F. Kuhs and after initial caution was properly identified in 1998.It was first obtained by cooling liquid … Wikipedia
Ice VII — is a cubic crystalline form of ice formed when liquid water freezes at pressures above 2.2 GPa.cite web |url=http://www.iapws.org/relguide/meltsub.pdf | title = IAPWS, Release on the pressure along the melting and the sublimation curves of… … Wikipedia
Ice XI — is an orthorhombic low temperature equilibrium proton ordered form of hexagonal ice (ice Ih). It is ferroelectric.Ice XI is considered the most stable configuration of ice Ih. The natural transformation process is very slow and ice XI has been… … Wikipedia
Ice IX — is a metastable form of solid water stable at temperatures below 140 K and pressures between 200 and 400 MPa. It has a tetragonal crystal lattice and a density of 1.16 g/cm³, 26% higher than ordinary ice. It is formed by cooling ice III from 208… … Wikipedia
Ice III — is a tetragonal crystalline ice, formed by cooling water down to 250 K at 300 MPa. It is the least dense of the high pressure water phases, with a density of 1.16g/cm3 (at 350 MPa). The proton ordered form of ice III is ice IX.Ordinary water ice… … Wikipedia
Ice II — is a rhombohedral crystalline form of ice with highly ordered structure. It is formed from ice Ih by compressing it at temperature of 198 K at 300 MPa or by decompressing ice V. When heated it undergoes transformation to ice III.Ordinary water… … Wikipedia
Ice V — is monoclinic crystalline form of ice formed by cooling water to 253 K at 500 MPa. It has the most complicated structure of all the phases. The proton ordered form of ice V is ice XIII.Ordinary water ice is known as ice Ih, (in the Bridgman… … Wikipedia
Ice VI — is a tetragonal crystalline form of ice formed by cooling water to 270 K at 1.1 GPa. It exhibits Debye relaxation. A proton ordered form of ice VI has been predicted but not proven, as ice XV near 108 80 K.Ordinary water ice is known as ice Ih,… … Wikipedia
Ice VIII — is a tetragonal crystalline form of ice formed from ice VII by cooling it below 5 °C. It is more ordered than ice VII, since the hydrogen atoms assume fixed positions.Ordinary water ice is known as ice Ih, (in the Bridgman nomenclature).… … Wikipedia
Ice X — is a cubic crystalline form of ice formed in the same manner as ice VII, but at pressures as high as about 70 GPa. It is proton ordered and symmetric.Ordinary water ice is known as ice Ih, (in the Bridgman nomenclature). Different types of ice,… … Wikipedia
