The relation between mineral morphology and metallogenic process of celestite in the Aijingshan strontium deposit in Lishui,Jiangsu Province
The Aijingshan strontium deposit in Lishui of Jiangsu Province,located in the eastern section of the Lishui Basin in the middle-lower reaches of Yangtze Basin metallogenic belt,is a representative of volcanic hydrothermal strontium deposits in China. The relation between the morphological characteristics of celestite and its mineralization stages is discussed in the paper by analyzing the macroscopic and microscopic morphology of celestite samples gathered from the strontium deposit. The macro morphological characteristics of celestite main-ly include four forms:tabular,platy-flaky,xenomorphic fine granular and drusy. The microscopic morphology of celestite is characterized with three shapes:tabular,fine granular-flaky and amorphous. The hydrothermal metallo-genesis of the Aijingshan strontium deposit undergone early and mid-late metallogenic processes in sequence,which can be further divided into four stages:celestite,pyrite-celestite,kaolinite-celestite and calcite-celestite. The mineral morphology of celestite corresponds to the metallogenic process,which shows that the tabular celestite in the macro and micro morphology is mainly formed in the celestite and pyrite-celestite mineralization stages dur-ing the early metallogenic process,while the other shapes of celestite are mostly formed during the mid-late pro-cess,i.e. platy-flaky,xenomorphic fine-granular celestite in the macro morphology,and flaky-fine granular ce-lestite in the micro morphology are mostly formed in the kaolinite-celestite mineralization stage,drusy celestite in the macro morphology is formed in the calcite-celestite mineralization stage,while amorphous celestite in the mi-cro morphology can be formed both in the kaolinite-celestite and calcite-celestite mineralization stages.
Aijingshan strontium depositcelestitemorphological characteristicsmetallogenic processLishui Basin,Jiangsu Province
万方数据
维普
