CAJ | 학술논문

小天井锰矿是滇西地区最大的锰矿床，产于滇西上三叠统松桂组碎屑岩建造中，由氧化锰矿石和碳酸锰矿石组成，矿石成份较单一。碳和氧同位素的特征揭示了成矿物源的多来源及成矿的多阶段特征。稀土配分模式属轻稀土富集型。鹤庆锰矿形成于扬子地块西缘三叠纪诺利期盐源-丽江盆地中的丽江凹陷带之内的一个次级叠加盆地。盆地和成矿作用受控于同生断裂活动。建立了成矿模式。
소천정맹광시전서지구최대적맹광상，산우전서상삼첩통송계조쇄설암건조중，유양화맹광석화탄산맹광석조성，광석성빈교단일。탄화양동위소적특정게시료성광물원적다래원급성광적다계단특정。희토배분모식속경희토부집형。학경맹광형성우양자지괴서연삼첩기낙리기염원-려강분지중적려강요함대지내적일개차급첩가분지。분지화성광작용수공우동생단렬활동。건립료성광모식。
As the largest manganese deposit in the west of Yunnan Province, the Xiaotianjing manganese ore deposit occurs in clastic rocks of Triassic Songgui Formation. The manganese ore deposit is composed of manganese oxides and carbonate, and the ore composition is rather simple. The carbon and oxygen isotopic characteristics show that the ore-forming materials came from multi-sources and the ore-forming process was characterized by multistage evolution. The distribution model of rare earth elements belongs to enrichment type of the light rare earth elements. The deposit was formed in a secondary superimposed basin in the Lijiang depression belt within the Yanyuan-Lijiang basin of Triassic Nuoli period on the western margin of the Yangtze massif. The basin and the metallogenic activity were controlled by contemporaneous faults. A metallogenic model was established in this paper.