Like most of Huambo province, the economy of Longonjo municipality is primarily agrarian, both farming and livestock raising; however Pensana's subsidiary Ozango Minerals has plans to open a rare earth mine there,[4][5] in the Longonjo carbonatite intrusion (Mount Chibilundo).[6][7]
There has been extensive deforestation due to the production of charcoal that supplies Angolan urban areas. This has produced additional pasture for cattle.[8]