Iron carbonate, FeCO3, as is siderite. always brown.
与菱铁矿一样，是碳酸亚铁FeCO3。褐色。
And then studied the origin and lithofacies meaning of siderite.
在此基础上研究了菱铁矿的成因和岩相意义。
Too much CO2, and magnetite can't form, whereas the opposite is true for siderite.
如果大气中存在的二氧化碳太多，磁铁矿则无法形成；
Especially emphasizes that siderite has no apparent effect on formation resistivity.
特别强调指出局部发育的菱铁矿对该区地层电阻率无明显影响。
Thereby the scientific basis for developing and utilizing the low grade siderite were provided.
从而为开发利用低品位矿提供了理论依据。
The pyrite and siderite associated with the ores have been oxidized into limonite hemitite and goethite.
黄铁矿、菱铁矿变为褐铁矿、赤铁矿和针铁矿。
The pyrite and siderite associated with the ores have been oxidized into limonite hemitite and goethite .
黄铁矿、菱铁矿变为褐铁矿、赤铁矿和针铁矿。
The pyrite and siderite associated with the ores have been oxidized into limonite, hemitite and goethite.
一种常见的氧化铁矿石，是针铁矿、赤铁矿和纤铁矿的混合物。
To separate hematite, supposed hematite, specularite, limonite, siderite, manganese ore, chromite and so on.
对赤铁矿、假像赤铁矿、镜铁矿、褐铁矿、菱铁矿、锰矿、铬铁矿等的分选。
Siderite is vastly developed in the Longtan, Changxing formations in southwestern mine area, Zhijin coalfield.
织金煤田西南矿区龙潭组、长兴组广泛发育菱铁矿层。
The minerogenetic series of the Shanxi Formation mainly includes coal beds, followed by expanded clay and siderite.
山西组成矿系列主要有煤，其次是膨胀粘土矿、菱铁矿。
X-ray studies show that carbonate minerals are aragonite, high-Mg calcite, and lesser dolomite, ankerite and siderite.
碳酸盐岩中自生碳酸盐矿物主要为文石、高镁方解石，少量白云石、铁白云石和菱铁矿。
The effect of temperature and atmosphere conditions on the magnetization of Wangjiatan siderite under fluidization was investigated.
对王家滩菱铁矿在流态化状态下的磁化焙烧温度和焙烧气氛条件分别进行了试验研究。
The composition analysis of five-component mixed minerals of siderite, kaolinite, dolomite, calcite and quartz has been analyzed inN_2.
在n_2气下对配合的菱铁矿、高岭石、白云石、方解石、石英五元混合矿物的组成进行了分析。
In light of the conditions of the siderite resource in Wangjiatan, Kun Steel, tests on its roasting and flash roasting were carried out.
针对昆钢王家滩菱铁矿资源，进行了焙烧和闪速焙烧试验研究。
Under weathering carbonates, such as siderite are usually turned into limonite which finally occur as hematite in the Weathering crusts.
菱铁矿等含铁碳酸盐在风化作用中向褐铁矿转化；在古风化壳中褐铁矿变为赤铁矿。
The paper introduced the experimental research and practice on recovering siderite form gold ore tailings in Hubei Sanxin Gold Copper Co.
介绍了湖北三鑫金铜股份有限公司从金矿尾矿中回收菱铁矿的试验探索，以及回收菱铁矿的生产实践。
In terms of mineralogy, glauconites, siderite nodules, boron contents and carbon isotopes also show that the sedimentary environment is transitional.
③矿物学方面，海绿石、菱铁矿结核、硼元素含量和碳氧同位素资料也表明沉积环境由海→陆的过渡性质。
The Late Carboniferous prototype sedimentary basin is likely to be a hinterland basin, which is favourable for preservation of large gypsum-siderite deposits.
晚石炭世原型沉积盆地可能为后陆盆地，有利于大型石膏菱铁矿矿床保存。
Oxidation roasting was a pretreatment technique for low-grade and complex siderite, the parameters of oxidation roasting were important to roasting efficiency.
氧化焙烧是解决低品位复杂难选菱铁矿的有效前处理工艺，氧化焙烧参数对焙烧效果影响很大。
It has been found that a lot of gypsum and zinc bearing siderite occur on the surface of Xitieshan deposit and near ore country rocks of the upper part of the ore body.
锡铁山矿床地表及上部中段的近矿围岩中发育大量的石膏和含锌菱铁矿，长期以来主要作为喷流沉积或后期改造的产物。
The analysis of the iron bearing mineral compositions indicates that the major iron bearing minerals in the rocks are magnetite, maghemite, hematite, pyrite and siderite.
矿物成分分析显示，岩石中主要含铁矿物为磁铁矿、磁赤铁矿、赤铁矿、黄铁矿和菱铁矿。
The main metallic mineral is specularite containing native gold and electrum. Surbordinate minerals are pyrite, chalcopyrite siderite and a very small amount of sulfosalt.
金属矿物较简单，主要为镜铁矿含自然金和银金矿，次为黄铁矿、黄铜矿、菱铁矿和微量硫盐。
From microscopic examination of rocks and minerals, the author analyzed morphological characteristics and occurrence status of siderite in Tongziyan Formation, Longyong Coalfield.
从岩矿镜下鉴定资料入手，分析了龙永煤田童子岩组菱铁矿的形态特征和赋存状况。
After the siderite is fully decomposed, oxidation degree will be the main factor influencing the roasting effect and a roasting time increase would lead to a reduced product quality.
在菱铁矿完全分解之后，氧化程度是焙烧效果的主要影响因素，延长焙烧时间会使焙烧产品质量下降。
The gas chromatography has extremely high sensibility to identify H_2, so it is a method to detect siderite which contains micro clays and impurity minerals with OH groups, vice versa.
由于气相色谱对H_2的检出灵敏度特高，可作为对菱铁矿中含有羟基结构的微量粘土及其矿物杂质的检测方法，反之亦然。
It occurs rarely as a free metal, occasionally in natural alloys (especially in meteorites), and in hundreds of minerals and ores, including hematite, magnetite, limonite, and siderite.
地壳中游离铁很少见，而通常存在于合金(特别是陨石)及数百种矿物中，包括赤铁矿、磁铁矿、褐铁矿和菱铁矿。
During metamorphization the siderite is transformed into magnetite under the action of high temperature and high pressure, while other Fe-bearing carbonate rocks are changed in to skarns.
在变质作用中，菱铁矿在较高温度和压力下转变成磁铁矿，其他含铁碳酸盐转变成夕卡岩。
During metamorphization the siderite is transformed into magnetite under the action of high temperature and high pressure, while other Fe-bearing carbonate rocks are changed in to skarns.
在变质作用中，菱铁矿在较高温度和压力下转变成磁铁矿，其他含铁碳酸盐转变成夕卡岩。
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