Sphenes,ascrystalline solid of radioelements, existes in the crystallography, its stability has a important significance for security estimate of the solid includingnucleus waste material.

• 作为固化放射性元素的备选矿物榍石赋存于结晶岩中，其稳定性对于核废物固化体的安全性评估意义重大。