Phosphor and manufacturing method for the same, and light source

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A phosphor, which is given by a general composition formula expressed by MmAaDdOoNn : Z, (wherein element M is at least one kind of element having bivalent valency, element A is at least one kind of element having tervalent valency selected from the group consisting of Al, Ga, In, Tl, Y, Sc, P, As, Sb, and Bi, element D is Si and/or Ge, O is oxygen, N is nitrogen, and element Z is at least one kind of element selected from rare earth elements or transitional metal elements, satisfying m>0, a>0, b>0 o≧0, and n=2/3 m+a+4/3b−2/3o), where a content of the element Fe is smaller than 200 ppm.