Short answer is: Yes it can.
Long answer: Ca-phosphate comes in many forms, and their solubility (or precipitation) depends on the pH and the concentration.
(see Google: Many titles on that subject)

I love questions like this. I didn't know the answer. It was thought provoking and I looked into it further as greystoke suggested. Though the original post could easily have been answered with a google search instead of a question on this forum, others like me might not be provoked to learn more if the post wasn't made.