tailieunhanh - Đặc điểm chất lượng sa khoáng Ilmenit vùng ven biển Nam Trung Bộ trên cơ sở phân tích Sem và Qemscan

Bài viết sử dụng kết quả phân tích SEM và QEMSCAN để làm rõ về đặc điểm hình thái, địa hóa khoáng vật thu thập được từ sa khoáng ven biển ở khu vực ven biển Nam Trung Bộ. | Đặc điểm chất lượng sa khoáng Ilmenit vùng ven biển Nam Trung Bộ trên cơ sở phân tích Sem và Qemscan 72 Journal of Mining and Earth Sciences Vol. 61 Issue 1 2020 72 - 82 Quality characteristics of Ilmenit minerals in the south central of Vietnam by sem and qemscan analysis Hiep Huu Nguyen 1 2 3 Andrew Carter 3 Din Bui Dao 4 Luc The Trinh 3 Chi Kim Thi Ngo 2 Dao Anh Vu 2 Binh Van Phan 2 Huy Quang Nguyen 5 1 Center for Excellence in Analysis and Experiment Hanoi University of Mining and Geology Vietnam 2 Geology Falcuty Hanoi University of Mining and Geology VietNam 3 Department of Earth and Planetary Sciences Birkbeck University of London . 4 Office of Ministry of Natural Resources and Environment 5 Northwest Geological Division General Department of Geology and Minerals of Vietnam ARTICLE INFO ABSTRACT Article history Placer deposit along the South Central Coast of Viet Nam is formed by the Received 19th Nov 2019 enrichment of heavy minerals through a combination of transportation Accepted 03rd Jan. 2020 weathering erosion and deposition processes. Ilmenite placer forms Available online 28th Feb. 2020 continuously along the South Central Coast from local origin when the Keywords shoreline is far from the modern shoreline formed during the marine Placer transgression process from the late Plestocene to Holocene. The Ilmenite morphological and localization characteristics of Ilmenite have been clarified on the distribution trend with SEM method combined with SEM and QEMSCAN QEMSCAN. Meticulous research on Ilmenite s grain structure and chemical EDS stone. composition in the study area has shown a tendency to significantly enrich the quality of Ti placer according to the upward trend in the north-south direction. In the south the Ilmenite placer has smaller particle size but better selective roundness and better quality than in the northern part of the study area. The enrichment of TiO2 content with increasing trend from North to South was observed due to the .