马思罗金矿区煌斑岩侵入于盐塘组第二段，呈树枝状、条带状平行展布。岩石为致密块状云煌斑岩，其w（ SiO2）变化于37．88％～40．40％，K2 O/Na2 O比值介于1．05～3．63，为碱性系列的钾质煌斑岩。煌斑岩与金矿化在时空分布及成因上有密切的内在联系，认为煌斑岩与金矿体均受控于断裂破碎带，煌斑岩切穿了断裂破碎带及金矿体，煌斑岩的侵入为金进一步富集提供了物源、热能、含矿流体。
Lamprophyre intruded into the second stage of Yantang Formation ,parallel displayed as dendrite and strip.The rock is dense massive lamprophyre , in which the content of SiO 2 ranges from 37.88 % to 40.40 %. K2 O/Na2 O ratio is between 1.05 to 3.63,indicating that it is potassic lamprophyre of alkaline series .The lamprophyre and Gold Mineralization are closely related in spatial distribution and formation .They are controlled by fracture zone . The lamprophyre crossed and disconnected the fracture zone and gold ore body ,which provided mineral source ,thermal energy and ore-bearing fluids for the gold enrichment .
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