Cascades to Coast

Is there a type of rock that burns your skin on contact?

Wet Portland cement causes skin burns because it is made of lime (calcium oxide). The calcium oxide become calcium hydroxide when mixed with water (CaOH). This is a base that will react with skin by burning because the reaction with skin is an exothermic reaction. Lye (NaOH) is also austic and will react with skin by burning.