Franklinite is now the official state mineral of New Jersey. Governor Murphy signed the legislation this week. In a state he said: "By designating Franklinite as the official state mineral. We celebrate yet another quintessentially Jersey piece of history." Franklinite is an ore rich in zinc which is found exclusively in Sussex County. The world's largest deposits of Franklinite are located in Franklin and Ogdensburg. Sterling Hill in Ogdensburg was the state's last working mine. It closed for good in 1986. Franklinite contributed greatly to the economic growth of New Jersey.
Source: New Jersey Herald