Spherical crystalline silica particles, method for producing same, and resin composite composition and resin composite comprising same

The purpose of the present invention is to provide: spherical crystalline silica particles having a low lithium content and a high quartz crystallization rate; a method for producing the spherical crystalline silica particles; and a resin composite composition and a resin composite containing the spherical crystalline silica particles. Spherical crystalline silica particles having a roundness of 0.80 or more, an average particle diameter (D50) of 1.0-100.0 [mu] m, containing less than 0.05% by mass of lithium in terms of oxide, and 0.10-less than 1.00% by mass of calcium in terms of oxide, the spherical crystalline silica particles being crystalline silica in an amount of 50.0% or more of the whole, the spherical crystalline silica particles having a particle diameter (D50) of 1.0-100.0 [mu] m, and the spherical crystalline silica particles having a particle diameter (D50) of 1.0-100.0 [mu] m. 90.0% or more of the crystalline silica is quartz. 本发明的目的在于提供一种锂含量较低且石英结晶率较高的球状晶体颗粒、及其制造方法、以及包含该球状晶质二氧化硅颗粒的树脂复合组合物及树脂