Study on the stratification and critical size in siderite heattreatment 菱铁矿热处理分层现象及临界线度的研究
4.
Industrialization of research achievements on mineral processing of siderite and limonite : problems and countermeasures 某难选硫化铜矿浮选新工艺研究
5.
The results indicate that the jade mainly consists of illite and a small quantity of feldspar , quartz , hematite , siderite and rutile , which is argillaceous sedimentary rock 结果表明，其矿物成分以伊利石为主，含有少量的长石、石英、赤铁矿、菱铁矿和金红石，为泥质沉积岩。
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Including model th - 2 zinc silicate primer , th - 11 type epoxy zincrich paint , th - 12 type epoxy siderite intermediate coat , th - 17 type polyurethane coating of all kinds of varieties , th - 22 type modified epoxy pitch glass squama coating , etc . it has reliable quality and long antiseptic life , it is the ideal protection coating for large - scale steel construction 包括th - 2型硅酸锌涂料、 th - 11型环氧富锌涂料、 th - 12型环氧云铁中间漆、 th - 17型各色聚氨脂涂料、 th - 22型改性环氧沥青玻璃鳞片涂料等。质量稳定可靠，防腐寿命长，是大型钢结构理想的防护涂料。
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Huangmei has a rich reserve of underground minerals , 15 sorts are proven to have exploitation value , of which , limonite and siderite have a reserve of 58 million tons , the tenor is around 45 % , being concentrated ; quartz is of 100 million tons ; gypsum mine is 270 million tons ; barite is 500 , 000 tons and silex of 10 million tons ; porcelain clay , limestone , shale and granite are extensively distributed and of large reserve 黄梅地下矿产丰富,已探明有开采价值的矿产资源15种,其中褐铁矿、菱铁矿储量5800万吨,品位45 %左右,分布集中；石英矿1亿吨；石膏矿2 . 7亿吨；重晶石50万吨；硅石1000万吨；瓷土、石灰石、页岩石、花岗岩分布广、储量大。
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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
