Question

What are the physical properties of exotic ice?

Answer 1

Melting point. The melting point of ice is 0 °C (32 °F; 273 K) at standardpressure; however, pure liquid watercan be supercooled well below thattemperature without freezing if theliquid is not mechanically disturbed.

Answer 2

crystalline structures. So all sorts of properties would have (small) differences. Density, melting point, and heat of fusion 

 GPa by lowering its temperature to ambient temperatures (see Phase Diagram). ... It may be considered the most stable phase as it exists over a wide range of temperature and pressure. It is a plausible constituent of giant planets and icy moons.