Gneiss is a high grade metamorphic rock, meaning that it has been subjected to higher temperatures and pressures than schist. It is formed by the metamorphosis of granite, or sedimentary rock. Gneiss displays distinct foliation, representing alternating layers composed of different minerals.
Mountrail County is a county located in the U.S. state of North Dakota. As of the 2010 census, the population was 7,673. Its county seat is Stanley.
Seffner is located northeast of the center of Hillsborough County and is bordered by Thonotosassa to the north, Mango to the west, and Brandon to the south. Interstate 4 is the northern boundary of the CDP, and the southern boundary follows State Road 574 (Dr. Martin Luther King Jr. Boulevard).