TY - JOUR AU - Bình, Nguyễn Văn PY - 2017/03/25 Y2 - 2024/03/29 TI - NGHIÊN CỨU VỀ TOURMALIN Ở HOẰNG HÓA, THANH HÓA JF - Vietnam Journal of Earth Sciences JA - Vietnam J. Earth Sci. VL - 27 IS - 1 SE - Articles DO - 10.15625/0866-7187/27/1/9393 UR - https://vjs.ac.vn/index.php/jse/article/view/9393 SP - 78-81 AB - The paper presents some characteristcs of bigcrystals of black tourmaline - a new found in HoangHoa district (Thanh Hoa province). The blacktourmaline was found as a big crystals on the pegmatite bodies and quartz vein. The study on tourmaline from Hoang Truong pegmatite and quartz vein, by chemical analysis, X-ray diffraction allowed to indicate that black tourmaline of the Hoang Truong pegmatite and quartz vein was mainly belongs to schorl. ER -