鈉长石化、云英岩化作用是花崗岩中比較常見的岩浆期后蝕变現象。在上述作用中,常伴随着稀有元素的富集,形成具有工业意义的矿床。本文所討論的矿区即属此例。該区位于活化地台边緣一个岩基状花崗岩体的边部。区內有粗粒、中粒及細粒黑云 Albite and dolomitization are the more common post-magmatic alteration in granite. In the above role, often accompanied by the enrichment of rare elements, the formation of the industrial significance of the deposit. The mining area discussed in this article is an example. This area is located at the edge of a rock basement granite edge of the active platform. The area has coarse, medium and fine black clouds