GUO Yu-qian1, FANG Wei-xuan1, CAO Jing-wei2
(1. China Non-ferrous Metals Resource Geological Survey, Beijing 100012, China; 2. Hainan Maogao Mining Co., Ltd. Hainan, Danzhou 571700, China)
Abstract: Wenxi tungsten deposit was newly discovered in Danzhou, Hainan Province, China. The study of occurrence state of tungsten has a wider significance not only on industry but also on the study of halo-forming and metallogenic mechanism of tungsten. Based on field survey, combined with artificial sand, chemical composition, microscope identification, electron microprobe analysis, characteristic and occurrence state of the ore minerals were studied. Results show that most tungsten occurs as scheelite and some occurs as wolframite and tungstite. Silicified alteration, tourmalinization, albitization and potassium alteration are the most important alteration types related to the tungsten mineralization. The structures of scheelite are breccia,veinlets and granular, being beneficial for separation. In this study, another important phenomenon is the solid mineral inclusion that formed at different ages in the scheelite. Plagioclase, apatite, quartz, albite, pollucite, tourmaline, phlogopite, ilmenite and orthite occurred as solid mineral inclusions take not only a signification of comprehensive utilization but also the indication for ore-forming fluids related to the acid magmatism system.
Keywords: Scheelite; Solid mineral inclusions; Hornstone tungsten; Skarn tungsten; Danzhou, Hainan
E-mail: guoyuqian888@126.com
ACTA MINERALOGICA SINICA Vol. 37, No. 5, 2017, Page 545-550
