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Ice542: P drop synth f.g. ice I + 5-micron SiO2 in mass ratio 4:1

Conditions:    
200 K    
I --> II at ~255 MPa, a bit higher than usual    
30-40 min as ice II, most at 220-240 MPa, peak 265 MPa    
P drop from 240-250 MPa    
Fine-grained ice I fabrication by pressure drop from >240 MPa.

Read notes from run log here

micrographs