District 5 Investments, an energy-focused private equity firm based in Texas, has formed a new subsidiary called Pathfinder Resources in order to invest in the Marcellus/Utica region. According to an announcement yesterday, Pathfinder will focus on acquiring “producing and non-producing oil and gas mineral interests, royalty interests and non-operated working interested” across the U.S., but starting first in the Marcellus/Utica. Investment sizes range from $5 million to $35 million. Here’s the latest investor to grab a piece of the Marcellus/Utica pie…