摘要
湖南大义山西北端的硼矿属接触交代—热液叠加型。矿体赋存于大义山花岗岩体中上石炭统壶天群白云岩接触带中,呈层状、似层状,局部为透镜状,分枝复合明显。矿石组分复杂,结构构造多样。富镁的碳酸盐岩是有利的成矿围岩;富含硼、氟的大义山花岗岩体是成矿母岩;广泛发育的节理裂隙是容矿构造。外围尚有一定的找矿远景。
The boron deposits in the northwestern side of Dayishan granite belong to contact metasomatic-hydrothermal telescoping type. The orebodies occur in the contact zone between Dayishan granite and Futian Group dolomitite of Carboniferrous system, taking stratiform, bed-like shapes, locally lenticular shape, branching and converging obviously. The composition of the ore is complicated and the texture and structure of the ore is various. The magnesium-rich carbonate rocks are favourite ore-forming country rocks; the Dayishan granite which bears rich boron and fluorine is the mother rock; the extensively-developped joint fissures are the main container for ore-forming fluid. The similar areas in the vicinity are still of some ore-f inding potential.
出处
《湖南地质》
1990年第3期20-24,共5页
Hunan Geology
关键词
硼矿
控矿因素
接触交代作用
Contact metasomatism
Magnesium skarn
Boron ore
Minerogenic factors
Dayishan granite
