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罗甸透闪石矿床属燕山期岩浆热液矿床,成矿作用为接触交代;侵入岩体为辉绿岩,属偏碱性基性幔源浅成岩,岩体呈似层状顺层侵入于二叠系中统栖霞组(P2q)与茅口组(P2m)接触面之间;围岩蚀变有透闪石化和大理岩化,由岩体向外依次分为大理岩化带→透闪石化带;软玉矿体赋存于外接触带茅口组一侧,顺层产出;含矿带厚10～30余米,其中夹矿体十余层,矿体形态以似层状为主,次为透镜状,厚0.05～0.3 m。在1000 km2范围内发现5个辉绿岩体露头,呈带状出露,长3～35 km,显示有矿化,具有较好的找矿远景。
Luodian tremolite deposit belongs to Yanshanian magmatic hydrothermal deposit, and its mineralization is contact metasomatism. The intrusive rock is diabase, which belongs to alkaline mantle source rock diagenesis. Permian intermediate Qixia Formation (P2q) and Maokou Formation (P2m) between the contact surface; wall rock alteration with tremolite and marble, from the rock body is divided into marbled → flash Petrochemical belt; nephrite ore body occurs in the outer contact with one side of Maokou group, bedding output; ore belt thickness of 10 to 30 meters, of which more than ten layers of ore body, the ore body morphology like stratification The main, secondary lenticular, thickness 0.05 ~ 0.3 m. Five outcrops of diabase bodies have been found in the range of 1000 km2. They are banded out with a length of 3 ~ 35 km and show mineralization with good prospects of prospecting.