Black Widow and Hawkeye argued over which one of the two would help Captain America, until Falcon appeared with the orders for the two to hold off the Super-Adaptoid while he called Iron Man, to which Black Widow ordered him not to.
Chicken's blood stone is a rock, rather than a mineral, that is composed of dickite; a polymorph of kaolinite, and quartz. It also has a variable amount of cinnabar, which gives it a distinctive vivid red color.
A Blood Shard. Blood Shards are an alternate currency in the Adventure Mode of Diablo III: Reaper of Souls. They drop from Horadric Caches and Rift Guardians. They can only be used to buy items from Kadala, through gambling.