  We observe a coronal jet around 22:08 UT on 23 rd March of 2017, in a quiet
region towards the north-east of the solar disk. A minifilament eruption leads
to this jet. We analyze dynamics of the minifilament from its formation until
its eruption. We observe that the minifilament starts forming around 15:50 UT.
Then at a later time, it disappears but again appears and finally erupts as a
blowout jet around 22:08 UT. We study the evolution of photospheric magnetic
field beneath the minifilament. Initially, we observe subsequent increase and
decrease of positive magnetic flux. Prior to the initiation of the eruption,
positive magnetic flux shows a continuous decrease until the minifilament
disappears. The positive magnetic flux increases and decreases due to new
positive flux emergence and cancellation of positive magnetic flux with
negative magnetic flux respectively.
