Activities that may reward a Psijic Motif chapter are, in order of most to least likely:
Completing Abyssal Geysers
Killing World Bosses
Completing Abyssal Pools
Treasure Chests (with higher-difficulty locks being more likely, and easier locks being less likely)
Killing Delve bosses
Killing monsters
The chance to obtain a Psijic Motif chapter or book from these sources increases with your rank in the Psijic Order skill line, with Rank 10 giving you a ten times increase over those not versed in the ways of the Psijic Order
Gem: Vitrified Malondo
Location: Drops from the same sources as above, more commonly than do the Chapters
