Newton lost a play-off to Tom Watson at The Open in 1975 and finished joint second behind Seve Ballesteros at the 1980 Masters.
His career was ended at 33 when he lost his right arm and eye after being hit by a spinning propeller as he prepared to board a plane.
Newton went on to become a commentator and golf course designer.
In recent years he had been diagnosed with Alzheimer's disease.
