DES MOINES, Iowa—Joey Jordison, a founding member of Slipknot, who drummed for the influential metal band in its most popular period and helped write many of its best-known songs, has died Monday at age 46, his family said. “We are heartbroken to share the news that Joey Jordison, prolific drummer, musician and artist passed away peacefully in his sleep,” his family said in a statement. “Joey’s death has left us with empty hearts and feelings of indescribable sorrow.” No cause or place of death was provided. Jordison grew up in Des Moines, Iowa, the eldest of three children, and began playing drums at age eight. He was already a veteran of the city’s metal scene when he founded the band that would become Slipknot in 1995, along with percussionist Shawn Crahan and bassist Paul Gray. The three talked plans and concepts for the band in sessions at the gas station …