Keeping mourning practices which are conducted in private, on Shabbat: Moed Katan 23a-24a
Receiving recent news of a relative's death on Shabbat, in a case where by the end of the holiday it wil be in the category of "Distant News": Moed Katan 20b
Tearing clothing in the above case: Moed Katan 20b
Uncovering his head: Moed Katan 24a [2x]
Righting his bed: Moed Katan 24a, 27a
Wearing shoes: Moed Katan 24a
Sexual relations: Moed Katan 24a
Bathing: Moed Katan 24a
Conduct of a Mourner with an unburied relative: Moed Katan 23b
What to do with the Mourner's Torn Clothing on Shabbat: Moed Katan 24a [3x]
Tearing Clothing if one changes it on Shabbat: Moed Katan 24a