Answer:
When I live I cry if you don't kill me I'll die.
I can be found after you remove 6 letters from BSAINXLEATNTEARS
I am the minerals vital for your good health.
Break me but I’ll continue to work touch me and maybe I’ll stay with you forever.
I won’t break if you throw me off from the highest building but I will break if you place me in the ocean.
Give it food and it will live, give it water and it will die.