Calcium Deposits

[myenigmaself]

Is it possible for shrimp to get calcium deposits? I have two shrimp (ghost shrimp and vampire shrimp) in my snail setup and I have been giving the snails calcium supliments. The joints in the ghost shrimp's exoskeleton are getting pretty white, as opposed to the normally opaque. It's not very noticeable on the vampire but there seems to be whiteness on the joints of him as well. Could this be calcium? They seem very healthy otherwise.
Thanks

EDIT:
Also, if it is calcium deposits, is this a terribly bad thing for them?