摘要
个旧白云山碱性岩体在岩浆结晶分异过程中,稀土元素分馏显著,在配分型式、赋存状态、含量变化等方面,具有阶段性演化规律。该岩体的稀土元素地球化学模式反映了个旧矿区的碱性岩浆分异演化及成岩作用的过程,表生作用下稀土元素的富集对评价碱性岩风化壳离子吸附型稀土矿床具有典型意义。
The REE fractional distillation of the alkaline rock body in Baiyunshan, Gejiu, is remarkable, during the magama crystallization-differentiation. The-re are stage evolutional regular patterns in the aspects of REE patterns, pre-serving manner and variation of content. The REE geochemical patterns of this rock body show the evolution of the alkaline magmatic differentiation and the diagenetic process in Gejiu ore region. The REE enrichment by hysteromorphous precess offered the geolo-gical prerequisites, with which assessed the REE deposits of residuum ion-absorb-type in the alkaline rock.
出处
《云南地质》
1993年第3期277-289,共13页
Yunnan Geology
基金
云南省七.五至八.五期间科技攻关项目及国家科委中俄科技合作项目
