Phosphor and a method for manufacturing the same, and light emitting device

A phosphor containing a crystal phase represented by the following composition formula (1), furthermore, is a phosphor characterized by 100~2500ppm containing boron. (Wherein, M1 is Ca, at least one metal element selected from the group consisting of Ba and Mg, 2 ≦ a ≦ 8,0 ≦ b ≦ 3,2 ≦ c ≦ 7,10 ≦ d ≦ 25, 15 ≦ e ≦ 37,0 ≦ f ≦ 3,0