A green light emitting silicate-containing phosphor having both enhanced
luminescence intensity and a shortened persistence time and a method for
manufacturing the foregoing phosphor can be provided, and a phosphor
precursor can also be manufactured by releasing a mixed solution from an
exit of the outlet flow passage, after a suspension containing a silicon
compound is supplied into the first inlet flow passage, a solution
containing a metallic compound for forming a silicate-containing phosphor
precursor is supplied into the second inlet flow passage, and the
foregoing suspension and solution are introduced into the contact section
so as to mix with each other with controlling a flow of the mixed
solution so as to keep a Reynolds number of the mixed solution to be
3.times.10.sup.3 to 1.times.10.sup.6.