The Shiling sodalite syenite, Guangdong Province, is the only Early Cretaceous SiO 2 undersaturated alkali syenite known in the Nanling area, southeastern China.

• 广东省从化市石岭方钠石正长岩是南岭地区唯一已知的早白垩世硅酸不饱和碱性岩。