/usr/share/abinit/psp/12mg.psphgh is in abinit-data 7.8.2-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 | Hartwigsen-Goedecker-Hutter psp for Magnesium, from PRB58, 3641 (1998) paper
12 2 980509 zatom,zion,pspdat
3 1 1 0 2001 0 pspcod,pspxc,lmax,lloc,mmax,r2well
0.651812 -2.864297 0.0 0.0 0.0 rloc, c1, c2, c3, c4
0.556478 2.970957 1.329941 0.0 rs, h11s, h22s, h33s
0.677569 1.049881 0.0 0.0 rp, h11p, h22p, h33p
0.005152 0.0 0.0 k11p, k22p, k33p
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