Ancient mid-latitude Mar's covalent bonded ice?

cph

Might ancient mid-latitude Mar's ice be covalently bonded? Would 1-2 billion year old ice have much greater density then, compared to earth ice? So drilling into Mars' ice, compared to drilling into earth ice, and measuring relative difference in voltage/ampere as a proxy for relative density? Could one bring back a cube of Mars ice, without melting? Also wouldn't such guessed at Mars ice sink in water? Would it super cool your drink?

brother time

The ice is supposed to be carbon the freezing point for this is 3773 kelvin. this is easy to keep cold but hard to melt.
cheers, BT