摘要
板块间缝合带断陷盆地花岗岩碎屑沉积型铀矿有广阔的远景，过去三十多年，腾冲地区铀矿资源的勘探开发已产生了一般性小型地下开采、露天开采的矿山，以至中型露天开采，“封闭式”采、选、冶──地下浸出试验的企业。本文以腾冲地区某铀矿区矿化实例为根据，论述外生铀矿床的成矿机制与富集规律，即特定的地质背景、沉积过程，充分并交替进行的氧化、还原、吸附、渗滤作用。这实际是一套外生铀矿床的“地球化学盆”模式。深入研究这套模式，有助于区域内寻找与开发铀矿。
The U deposit of granitic clastic sedimentation type in the faulted basin along the suntre of plates has broad potentiality. The underground and opencut mines generally in small scale and the enterprise of medium scale opencut and ' Closed' mining, dressing, smelting underground soaking test have derived from the exploration of U ore resources in Tengchong region in more than 30 years. Taking some U ore field as an example, this paper discusses the metallogenic mechanism and enrichment law of the exogenic U deposit including the specific geological setting, sedimentation process, full and alternate oxidation, reduction, adsorption, seeepagee. And it is the geochemical basin model of the exogenic U deposit. The study of this model is helpful to finding and mining this kind of U deposit.
出处
《云南地质》
1994年第2期177-188,共12页
Yunnan Geology
