well first of all there is no ganster mine in poptropic.
on counterfit island
no
nabooti or wild west
an hero
at the mine
in the cave in the mine.
No.
Not yet.
It is near the left on the end but first you have to blow open the rock and the cave and get past the mine carts.
There is no Diamond Island on Poptropica. There is a Diamond Mine on Nabooti Island. (see related question)
you have to turn of the power to the electric fence and get a construction hat
mine was astronights and shark tooth they were awsome!