中国地质Issue(6)：1873-1896,24.
山东张家洼矽卡岩型铁矿矿物学特征及其对成矿环境的指示意义
Mineralogy of the Zhangjiawa skarn iron deposit in Shandong Province and its implications for metallogenic environment
摘要
Abstract
The Zhangjiawa skarn iron deposit with high-grade iron is located in Laiwu of Shandong Province within southeastern North China Craton. The Laiwu hydrothermal metasomatic iron deposit is located at the unconformity between Carboniferous Benxi Formation and Ordovician Majiagou Formation and near the contact zone between Majiagou Formation and Late Yanshanian diorite, with the mineral reserves reaching a large-size deposit. Recent researches show that mineral compositions are somewhat different with the distance from the contact zone. The inner zone consists of calcium skarn minerals such as garnet, pyroxene, amphibole and episode, while the outer zone is composed of magnesium skarn minerals such as phlogopite and serpentine. The zoning structures of garnets and pyroxene in the Zhangjiawa iron deposit indicate that the ore-forming environment of the deposit changed gradually with the evolution of mineralization. The environment was somewhat reducing and acid at the beginning and, with the growth of silicate minerals and magnetite, became oxidative and alkaline. Finally, polymetallic sulfides crystallized and the environment became acid and reducing.关键词
矽卡岩/矿物学/环带结构/形成顺序/物理化学环境Key words
skarn/mineralogy/zoning structure/sequence of mineral formation/physical and chemical conditions分类
天文与地球科学引用本文复制引用
费详惠,张招崇,韩鎏..山东张家洼矽卡岩型铁矿矿物学特征及其对成矿环境的指示意义[J].中国地质,2014,(6):1873-1896,24.基金项目
国家重点基础研究发展计划（“973”计划）项目(2012CB416806)。 （2012CB416806）
