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Vanadium mainly exists as independent minerals or in clay minerals in the form of isomorphism, with a small amount absorbed by clay minerals and limonite. Nickel mainly exists as independent minerals. Molybdenum occurs as colloidal sulfides with carbon, sulfur and clay, and forms molybdenite through thermal metamorphism. Uranium is unevenly scattered in collophanite and carbonaceous_argillaceous materials in the form of isomorphism or adsorption. REE mainly occur in collophanite in the form of isomorphism. Copper, lead and zinc chiefly exist in sulfides or sulfo_arsenides and are concentrated in the metallic layer.
钒或以独立矿物存在，或以类质同象赋存在粘土矿物中；镍主要以独立矿物存在；钼主要与碳、硫、粘土一起呈钼硫化物胶状集合体，经热接触变质作用后形成辉钼矿；铀呈不均匀分散在胶磷矿和碳泥质中，呈类质同象或吸附状态存在；稀土元素主要呈类质同存在于胶磷矿中，部分呈吸附状态存在；铜、铅、锌主要以硫化物和硫砷化物等存在，多富集在金属层中。
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In this bath, maleic acid was an inhibitor, when its concentration was kept at 20 mg/L, the deposition rate could reduce to 6.17μm/h, the content of nickel decreased to 1.74% and the resistivity was 7.51μΩ·cm; Potassium ferrocyanide inhibited deposition of copper, when its content was 0.5 ppm, the deposition rate decrease to 3.38μm/h, the content of nickel was 2.03%, the resistivity can reduced to 5.41μΩ·cm, the copper deposits also had higher (111) plane orientation. Thiourea was also an inhibitor in this system, when its concentration was kept at 0.8 ppm, the deposition rate was 4.72μm/h, the content of nickel in the film was 1.20%, the resistivity can reduced to 5.46μΩ·cm, at the same time, the deposition at (111) plane orientation become more favorable.
结果表明，马来酸在该体系中是抑制剂，当其浓度为20 mg/L时，镀速降为6.17μm/h，镀层镍含量降为1.74%，表面电阻率降为7.51μΩ·cm，铜层颗粒细小均匀，更有利于在(111)面上的结晶；亚铁氰化钾的加进可以明显降低镀，当其浓度为0.5 ppm时，镀速为3.38μm/h，镀层镍含量降为2.03%，表面电阻率降为5.41μΩ·cm，铜层颗粒细小均匀，(111)晶面衍射峰增强；硫脲在体系中也显示为抑制剂，当其浓度为0.8 ppm时，镀速降到4.72μm/h，镀层镍含量为1.20%，表面电阻率降为5.46μΩ·cm，形成的铜颗粒很小，同时(111)晶面衍射峰增强，有利于铜在(111)面上结晶。
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strombolian type eruption：斯特朗博利型火山喷发
stromatolithic 迭层状的 | strombolian type eruption 斯特朗博利型火山喷发 | stromeyerite 硫铜银矿
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Strombolian type volcano：斯通波利式火山
层孔虫;层孔虫类 Stromatopoda | 斯通波利式火山 Strombolian type volcano | 硫铜银矿 stromeyerine; stromeyrite