地球学报
地毬學報
지구학보
ACTA GEOSCIENTIA SINICA
2013年
z1期
207-213
,共7页
杨平%马亚雄%张道红%江洪飞%白磊%汪永华
楊平%馬亞雄%張道紅%江洪飛%白磊%汪永華
양평%마아웅%장도홍%강홍비%백뢰%왕영화
稀土%铁%钛多金属矿%古风化壳%成矿机理%找矿前景
稀土%鐵%鈦多金屬礦%古風化殼%成礦機理%找礦前景
희토%철%태다금속광%고풍화각%성광궤리%조광전경
REE%iron%titanium,polymetallic deposit%paleoweathering crust%metallogenic mechanism%ore-searching prospect
云南东部宣威-罗平一带,在二叠纪玄武岩两大喷发旋回顶部的古风化壳中,发现两层稀土、铁、钛多金属矿化层:ΣREO 0.016%~0.52%、TFe 10.09%~49.44%、TiO21.08%~10.94%;含矿层厚度8.0~35.0 m;矿化体分布广,呈层状、似层状。矿化层的形成经历了源(富稀土、铁、钛的玄武岩)-转(古风化淋积作用)-储(有利古地理环境)的成矿机理,成为稀土、铁、钛多金属矿极具潜力的远景区。
雲南東部宣威-囉平一帶,在二疊紀玄武巖兩大噴髮鏇迴頂部的古風化殼中,髮現兩層稀土、鐵、鈦多金屬礦化層:ΣREO 0.016%~0.52%、TFe 10.09%~49.44%、TiO21.08%~10.94%;含礦層厚度8.0~35.0 m;礦化體分佈廣,呈層狀、似層狀。礦化層的形成經歷瞭源(富稀土、鐵、鈦的玄武巖)-轉(古風化淋積作用)-儲(有利古地理環境)的成礦機理,成為稀土、鐵、鈦多金屬礦極具潛力的遠景區。
운남동부선위-라평일대,재이첩기현무암량대분발선회정부적고풍화각중,발현량층희토、철、태다금속광화층:ΣREO 0.016%~0.52%、TFe 10.09%~49.44%、TiO21.08%~10.94%;함광층후도8.0~35.0 m;광화체분포엄,정층상、사층상。광화층적형성경력료원(부희토、철、태적현무암)-전(고풍화림적작용)-저(유리고지리배경)적성광궤리,성위희토、철、태다금속광겁구잠력적원경구。
In Xuanwei-Luoping area of eastern Yunnan Province, two REE, Fe, Ti polymetallic mineralized beds were discovered at the tops of paleoweathering crusts formed by two eruptive cycles of Permian basalts. The thickness of the ore-bearing beds is 8.0~35.0 m, and they containΣREO 0.016%~0.52%, TFe 10.09%~49.44%and TiO2 1.08%~10.94%. Mineralized bodies are widely distributed and assume stratified and stratoid forms. The formation of the mineralized bed experienced the metallogenic mechanism of initial source formation (basalts rich in REE, Fe and Ti) -transformation (leaching and infiltration of paleoweathering crust) -storage (stored in favorable paleogeographic environment), and hence this area has become a prospective area of great potential for REE, Fe, Ti polymetallic deposits.