organogenous sediments meaning in Chinese

有机沉积物

4 ree geochemistry of fluorite , siderite , quartz , magnetite , calcite in ores mainly controlled by ore - forming fluids , in contrasting to those of the metamorphic minerals which controlled by crystal structure . the ore - forming fluids of initial stage show larger lree / hree fractionation than that of later stage . a narrow range of 6 ~ 4s valus for early stage chalcopyrite ( - 0 . 3 to 2 . 8 ) suggested that s originated from the mantle and the 6 13c and 8 18o valus of siderite range from - 11 . 17 to - 15 . 37 % and from 8 ~ 9 . 1 , respectively , it indicates that the c and o of ore - forming fluids were derived from the magma or organogenous sediment
6 、昆阳群因民组地层中出现的稀土富集、成矿与我国的白云鄂博稀土ree一fe一nb超大型矿一床和澳大利亚的olympicdamcu一u一au一ag一ree超大型矿一床，在成矿时代、产出大地构造背景、成矿物质来源等方面具有较大的相似性，均体现成矿受控于中元古代1