There are 50 Calcified Fragments to be found in Destiny: The Taken King.
This one can be collected during patrol. It requires a Charged Aronarch Rune
Fragment 36[edit]
Enter the Mausoleum and look forward toward the bright light at the far end. This is to the left of the Rupture, opposite the cabal ship.
Turn to the left and head through this doorway.
When you are inside, head through the doorway leading to the Founts. Head straight forward toward the gate.
To the left before you reach the gate.
Enter the hallway and turn to the left. Head forward until you find the hole in the ground. Drop down into it.
Head down the hallway and turn to the right. Go toward the small hole at the far end. Go through this hole in the wall.
Once through, look to the left. You will find the chest that activates an event.
Follow the directions to reach the event. Then follow the prompts on screen. It helps to have a Fireteam because of the number of enemies you will need to deal with.
When you have defeated the boss, a chest will appear in the middle of the area. Open it to claim your Calcified Fragment.
Book of Sadness Entry[edit]
You are Crota, my son. Welcome.
I fought my way out of hell to make you. I fought my traitor siblings and I fought the swarming corpse of Akka and I cut my way back into my own court, the High War, which had been usurped. Once I had made war on Savathûn, and crippled her tribute so that she could never challenge me, and once I had tricked Xivu Arath, and poisoned her tribute so that she could never again try to take my tablets, and once I had arranged my own lineages so that I would be greatest among the Hive and secure on my throne — then I found a mother to make spawn.
One of those spawn was you.
Your life will be a battle too. You will have to win your place at the High War. I will give you nothing... except this, your first sword, and this name I have prepared for you.
We fight a war against false hope, Crota. We chase a god called the Traveler, a huckster god who baits young life into building houses for it. These houses are unsafe, for they cannot stand against my Hive. And these houses are a trap — for they lead young life away from the blade and the tooth, which are the tools of survival and the means of ascension.
Only when the Traveler is extinguished will the universe be free to arrange itself, and assume, by ruthless contest, its final perfect shape, a shape which depends on nothing but itself.
Thus I name you Crota, Eater of Hope.
There is an oath upon me, Crota my son, an oath against the wretched Taox. This I do not give to you. It is for me, your father, to bear.
Let’s go meet your aunts and uncles.
