reported Rolling Stone.On Tuesday, his brother, Larry West Weinstein, wrote on Facebook that West’s heart stopped and he had been put on a ventilator, according to the LA Times.He is survived by his wife Jenni Maurer, whom he married onstage at a 2009 concert commemorating the 40th anniversary of Woodstock.West laid down authoritative guitar riffs and chesty yowls in Mountain, a thundering power trio rounded out by Felix Pappalardi on bass and Corky Laing on drums.