Kimberly,

I am a dental hygienist and oral cancer survivor. I have never heard of calcium deposits on the tongue. I have heard of and seen salivary glands, particularly on the floor if the mouth, blocked by calcium deposits, but there are no salivary glands on the tongue. Keep your fingers crossed that it is not serious but feel good that if is something, your friend didn't wait a long time to get checked out. Please let us know what happens.

Barb