Fig. 2
From: Penta- and hexa-coordinated beryllium and phosphorus in high-pressure modifications of CaBe2P2O8
The evolution of the unit-cell parameters of hurlbutite, CaBe2P2O8, along the compression. Filled, open and open with dots symbols correspond to high-pressure room-temperature experiments 1–3, respectively. The errors are smaller than the size of the symbols
