Neutro-acid batholith of Yanshan stage is the parent rock of small metallogenetic rock which is the metallogenetic parent rock of porphyry-type molybdenum deposit.

• 燕山期的中酸性岩基是成矿小岩体的母岩,而成矿小岩体又是斑岩型钼矿床的成矿母岩。