/usr/share/avogadro/crystals/sulfides/ is in avogadro-data 1.2.0-1+deb9u1.
This file is owned by root:root, with mode 0o755.
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/usr/share/avogadro/crystals/sulfides/Bi2S3-Bismuthinite.cif
/usr/share/avogadro/crystals/sulfides/CdS-Greenockite.cif
/usr/share/avogadro/crystals/sulfides/CdS-Hawleyite.cif
/usr/share/avogadro/crystals/sulfides/FeS.cif
/usr/share/avogadro/crystals/sulfides/FeS2-Pyrite.cif
/usr/share/avogadro/crystals/sulfides/HgS-Metacinnabar.cif
/usr/share/avogadro/crystals/sulfides/PbS-Galena.cif
/usr/share/avogadro/crystals/sulfides/Sb2S3-Stibnite.cif
/usr/share/avogadro/crystals/sulfides/SnS-Herzenbergite.cif
/usr/share/avogadro/crystals/sulfides/ZnS-Sphalerite.cif
/usr/share/avogadro/crystals/sulfides/ZnS-Wurtzite-2H.cif
/usr/share/avogadro/crystals/sulfides/ZnS-Zincblende.cif