DALLAS – Texas oil and ranching heiress Anne Marion, who founded the Georgia O'Keeffe Museum in Santa Fe, New Mexico, has died. Cody Hartley, director of the O'Keeffe museum, said in a statement that Marion died Tuesday in California. He called her a “passionate arts patron, determined leader, and generous philanthropist.”Marion and her husband, John Marion, established the museum in 1997. In an interview when the museum opened, Anne Marion said, "I've always loved her work. Under Marion’s leadership, the museum grew to also include O’Keeffe’s two historic homes and studios in northern New Mexico, at Abiquiu and Ghost Ranch.