To provide a molded body which has high strength, high ductility, and excellent dimensional stability while maintaining incombustibility and fire resistance.
A molded body formed from a curable composition containing (A) at least one aluminosilicate source, (B) an alkali metal hydroxide, (C) a calcium ion source, and (D) an alkali resistant fiber, wherein the aluminosilicate source (A) has an SiO2 content of 50% by mass or more based on a total mass of the aluminosilicate source (A), an amorphous ratio of 50% by mass or higher, and an average particle diameter of 50 μm or smaller, and comprises an aluminosilicate source having an average particle diameter of 10 μm or smaller in an amount of 30% by mass or more based on the total mass of the aluminosilicate source (A).