claim: Stephen King always wrote under his own name.
evidence: Kampfite is a rare barium silicate -- carbonate -- halide mineral with formula  : Ba12 -LRB- Si11Al5 -RRB- O31 -LRB- CO3 -RRB- 8Cl5 .. barium. barium. silicate. silicate mineral. carbonate. Carbonate mineral. halide mineral. halide mineral. Discovered in 1964 and described in 2001 , it is named after Anthony R. Kampf .. The mineral is known only from Fresno County , California .