I have been reading since you left, <name>. This stone you have found is called the Morrow Stone. While I am not entirely sure what its purpose is yet, you can be sure that it is something of great significance to be hidden away inside the Equinex Monolith the way it was.
I will continue my studies, and I hope I will be able to count on you in the future, <name>. Thank you for all your help.