Fig. 3From: Fabrication of dense albite aggregates by hot pressingOptical images of agglomerated secondary grains. a Freeze-dried powder without CAS conditions under plane-polarised light (PPL). b Freeze-dried powder with pure water solvent and CAS conditions (PPL). c Frozen suspension with pure water solvent under CAS conditions (PPL). d Freeze-dried powder with ethanol as the dissolved solvent and CAS conditions (PPL)Back to article page