I didn't post them anywhere. Nobody specifically asked me for them!

One interesting aspect of CO2 and H2O is that although one would expect brines to lower freezing points, when clathrates form they will preferentially grab the H2O to the point that salt crystallises out of solution as clathrate forms. This was related to the GeoMars conference by Michael Max, who has studied clathrates extensively on earth (but not CO2 clathrate. Nobody has looked much at that one for 100 years!).

What this means is, that on a CO2-dominated Mars, brines don't work. A couple of guys got rather disheartened by that.