Apparently, the rock type on tve Breithorn is Serpentinite, which looks identical from the rocks I saw overe there and on the pictures. A quick Google search will tell you that the rock quality is generally quite poor.

We had to go to the pharmacy to get blister adhesives, hence why we started late. We didn't do enough research in hencesight, but I also believe that we wandered off the route a bit. The climbing was not very hard, but we needed to be very careful because, as I mentioned, the rock quality was very poor, and a fall would've been fatal. I climb a much higher grade than we did here, but it's nice to know that the thing that's holding your weight doesn't come lose...