广东省海南岛某海滨砂矿为一综合性矿床。1958年由海南队发现并进行了勘探,查明有多种有益元素可以综合利用。 一.矿区地质概况 矿区之南、北为低矮丘陵,东临南海,西为平原,整个矿区位于平原与南海之间。 区内火成岩出露较少,仅分布于各孤山及南部和西南部的山坡上。主要是斑状黑云母花岗岩及少量的角闪黑云母花岗岩,其次是一些零星的闪长玢岩。 A seaside sand mine in Hainan Island, Guangdong Province, is a comprehensive deposit. It was discovered and conducted by Hainan team in 1958 to find out that there are many beneficial elements that can be comprehensively utilized. I. Overview of mining Geological mining area south and north for the low hills, east of the South China Sea, west of the plain, the entire mine is located between the plain and the South China Sea. The igneous rocks are less exposed in the area, only distributed in the Gushan Mountains and the slopes in the south and southwest. It is mainly composed of porphyritic biotite granite and a small amount of hornblende biotite granite, followed by some scattered diorite porphyrite.