Discovery of the World's Second Largest Molybdenum Deposit in the Shapinggou Area,Jinzhai County,Anhui Province

In the year of 2011, a superlarge molybdenum deposit was discovered in the Shapinggou area, Jinzhai county, Anhui Province by the Bureau of Geology and Mineral Exploration of Anhui Province, with its reserve more than 2.2 million ton, just next to the Klimax molybdenum deposit （〉3.3 million ton） in Colorado. It has ranged the world＇s second largest molybdenum deposit, with potential economic value up to 100 billion dollars.

Measurement of Metallogenic Depth and Deep Second Enrichment Belt Forecasting in Jiaodong Gold Deposit

The depth is important for ore finding in Jiaodong gold deposit. However, many geologists are still discussing how to confirm the depth for the tectonic and metallogenesis formation. The authors of this paper propose a new method-the correction of metallogenic depth via its structure to calculate the depth. This method, based on the crust rock in a solid stress state, emphasizes the elastic pattern rather than the static fluid pattern. In addition, this method is more appropriate to the actual situation in the crust than the method of weight/special weight. The authors of this paper illustrating, with the Jiaodong gold deposit as an example, the metallogenic depth correction via structure conclude that the depth of the most deposits, lower than 4-6 km, is often 2.5 km. Therefore, the authors suggest that there exists a second enrichment belt and that ore resources are more potential at the belt of Jiaodong area. These results have been demonstrated by years of exploration.

Rare presentation of primary (AL) amyloidosis as gastrointestinal hemorrhage without systemic involvement

We are reporting a rare case of a patient with primary(AL) amyloidosis presenting with an acute non-varicealupper gastrointestinal hemorrhage in the absence ofother systemic involvement. The case report involves a58-year-old woman with significant cardiac history andhereditary blood disorder who came in complaining ofabdominal pain and coffee-ground emesis for two days.Computed tomography(CT) scan of the abdomen andpelvis with contrast revealed segmental wall thickeningof the proximal jejunum with hyperdense, heterog-enous luminal content. Similar findings were evident inthe left lower small bowel region, suspicious for smallbowel hematoma and the possibility of intraluminalclots. Esophagogastroduodenoscopy performed postresuscitation showed punctate, erythematous lesionsthroughout the stomach as well as regions of smallbowel mucosa that appeared scalloped, ulcerated, andhemorrhaged on contact. Despite initial treatment for immunostain-positive focal cytomegalovirus gastritis, follow-up esophagogastroduodenoscopy after two months continued to demonstrate friable and irregular duodenal mucosa hinting at a different underlying etiol-ogy. Pathology reports from analyses of biopsy samples highlighted infiltration and expansion of the lamina pro-pria and submucosa. Subsequent staining with congo red/crystal violet and appropriate subtyping established the diagnosis of AL(kappa)-type amyloidosis. The sig-nificance of this case lies in the fact that our patient did not have the typically seen diagnostic systemic involvements-namely of heart and kidneys-usually seen in primary(AL) amyloidosis patients. It was the persis-tent endoscopic findings and biopsy results which gave clues to the physicians regarding the possibility of an abnormal protein-deposition entity.

Optimization of solvent swelling for efficient organic solar cells via sequential deposition

Compared to bulk heterojunction(BHJ)organic solar cells(OSCs)prepared by the blend casting in“one step process”,sequential deposition(SD)processed OSCs can realize an ideal profile of vertical component distribution due to the swelling of polymer films.Herein,we did trials on several kinds of second solvents for swelling the polymer layer,and investigated the packing structure and morphology of the swollen films and the performance of the resulting devices.We found that an optimized morphology can be achieved by solvent swelling while using orthodichlorobenzene(o-DCB)as the second layer processing-solvent,with polymer donor PffBT-3 as bottom layer,PC71BM as top layer and bicontinuous networks in the middle.Such solvent swelling process also makes the SD method exempt from thermal annealing treatment.The device based on SD yields a power conversion effi-ciency(PCE)up to 8.7%without any post-treatment,outperforming those from the devices based on SD using other solvents and that(7.06%)from BHJ device,respectively.We also extended the use of this approach to allpolymer blend system,and successfully improved the efficiency from 4.72%(chloroform)to 9.35%(o-DCB),which is among the highest PCEs in all-polymer-based OSCs fabricated with SD method.The results demonstrate that the swelling of the polymer by the second layer solvent is a necessity for SD,paving the way towards additivefree high-performance OSCs.

Proliferative glomerulonephritis with monoclonal immunoglobulin G deposits in a young woman: A case report

BACKGROUND Proliferative glomerulonephritis with monoclonal immunoglobulin G(IgG)deposits(PGNMID)is a newly recognized rare disease.The renal pathology is characterized by prominent manifestations of membranous hyperplasia,which are easy to misdiagnose.The clinical symptoms are severe.Massive proteinuria and hypoproteinemia are conspicuous,and most patients are accompanied by renal insufficiency and microscopic hematuria.CASE SUMMARY A 27-year-old woman was admitted to a hospital for macroscopic hematuria and proteinuria 4 years prior,and renal biopsy in the hospital suggested moderate-tosevere mesangial proliferating glomerulonephritis(MsPGN).She had taken a glucocorticoid,cyclophosphamide,mycophenolate mofetil,and other treatments and achieved brief partial remission.Recently,the patient visited our hospital due to massive proteinuria.Repeated renal biopsy and re-evaluation of the first biopsy obtained 4 years previously revealed monoclonal immunoglobulin deposition in the glomeruli.A bone marrow examination was performed to exclude hematologic malignancy,and a diagnosis of PGNMID was established.The patient showed remission after four cycles of a bortezomib+cyclophosphamide+dexamethasone scheme.CONCLUSION PGNMID is usually misdiagnosed as MsPGN or membranoproliferative glomerulonephritis.Although it often occurs in middle-aged and elderly individuals,it cannot be readily excluded in young people,even when serum immunofixation electrophoresis is negative.IgG subtype and light chain staining are necessary when this disease is highly suspected.An accurate diagnosis at the earliest stage may avoid the overuse of glucocorticoids and immunosuppressants.

Chemical vapor deposition synthesis of intrinsic van der Waals ferroelectric SbSI nanowires

Intrinsic ferroelectric materials play a critical role in the development of high-density integrated device. Despite some two-dimensional (2D) ferroelectrics have been reported, the research on one-dimensional (1D) intrinsic ferroelectric materials remains relatively scare since 1D atomic structures limit their van der Waals (vdW) epitaxy growth. Here, we report the synthesis of 1D intrinsic vdW ferroelectric SbSI nanowires via a confined-space chemical vapor deposition. By precisely controlling the partial vapor pressure of I2 and reaction temperature, we can effectively manipulate kinetics and thermodynamics processes, and thus obtain high quality of SbSI nanowires, which is determined by Raman spectroscopy and high-resolution scanning transmission electron microscopy characterizations. The ferroelectricity in SbSI is confirmed by piezo-response force microscopy measurements and the ferroelectric transition temperature of 300 K is demonstrated by second harmonic generation. Moreover, the in-plane polarization switching can be maintained in the thin SbSI nanowires with a thickness of 20 nm. Our prepared 1D vdW ferroelectric SbSI nanowires not only enrich the vdW ferroelectric systems, but also open a new possibility for high-power energy storage nanodevices.

旋转速度对滚动摩擦沉积增材组织的影响

滚动摩擦沉积增材(Additive Friction Rolling Deposition,AFRD)是一种新兴的金属固态增材制造技术,特别适用于基于熔合增材制造方法易产生凝固缺陷的高强度铝合金。采用AFRD方法进行2024-O铝合金增材,获得全致密无缺陷的四层增材试件,利用金相显微镜、扫描电子显微镜对不同旋转速度增材试件宏观形貌、微观组织进行了表征。结果表明:(1)沉积层组织致密,无夹杂、裂纹等缺陷、相邻两沉积层之间形成良好的冶金结合。(2)沉积层呈现细小的轴晶粒组织,随着旋转速度升高,晶粒尺寸呈下降趋势。(3)沉积层第二相粒子呈现点片状分布于Al基体上,随着转速增大,第二相粒子趋向于细化与均匀。

内蒙古阿巴嘎旗查干诺尔铜多金属矿区矿化带特征及矿床成因

查干诺尔铜多金属矿成矿地质优越,找矿潜力巨大但勘查程度尚浅。在研究区域基础地质和前人工作的基础上,通过野外地质调查、采样与测试分析等手段,研究了查干诺尔铜多金属矿矿床地质特征,探讨了矿床成因。研究结果表明:查干诺尔铜多金属矿矿化体发育于二长花岗岩侵入岩与灰岩外接触带的矽卡岩体内或蚀变二长花岗岩枝附近。矿区主要发育Ⅰ号和Ⅱ号矽卡岩矿化带,带内局部发育铜、钼(钨)矿化。工业铜矿体主要分布在近东西向Ⅰ号和Ⅱ号矽卡岩矿化带内。区内矿体以隐伏矿体和盲矿体为主,矿石主要为原生矿石,氧化矿石较少。矿物成分金属矿物主要为黄铁矿、黄铜矿、辉铜矿、辉钼矿、磁铁矿,其次为白钨矿、钛铁矿,偶见方铅矿、闪锌矿;地表见孔雀石、铜兰。矿石有益元素以铜为主,最低品位为0.20%,最高品位为3.15%,平均品位为0.58%。矿体围岩蚀变褐铁矿化、孔雀石化、矽卡岩化、硅化、绿帘石化、绿泥石化、高岭土化等发育地段。矿床成因类型为中高温热液-矽卡岩型叠加成因,有4大找矿标志。

Second Shape Finding Analysis of Membrane Structures

A second shape finding method was developed to improve the nonlinear finite element based shape finding method. The curved shape is obtained by raising the control points above the projection plane. The convergence was improved using pseudo material properties to get a preliminary shape, and then using the real properties to get the final shape. A large number of examples were analyzed to verify the validity and practicality of this method. The results show that the final curved surface after the second shape finding process is always quite similar to the first one. Moreover, the curved surface obtained after the second shape finding process is accurate and will be realized in real materials.

广西贺州市村洞口金矿区地质特征及矿床成因探讨

村洞口金矿区含矿脉总体呈北东-近南北向展布,产于加里东期大宁岩体与南华系正园岭组地层接触蚀变带及构造断裂带中,岩体的接触蚀变带及F1大断裂东侧的次级断裂、裂隙构造为本区成矿的容矿部位。本区矿源层主要为大宁花岗闪长岩体演化晚期矿浆及其后所形成的含矿热液。本文通过野外工作实际资料,分析矿区地质、地球化学异常特征,研究了矿床成因及找矿标志,总结了成矿规律,为该区多金属矿勘查提供地质依据。

内蒙古自治区额济纳旗道尔根嘎顺矿区铅多金属矿矿体特征及找矿标志

道尔根嘎顺矿区铅多金属矿位于觉罗塔格-黑鹰山火山型被动陆缘构造单元,矿区多金属矿含矿层位为泥盆系雀儿山群组中的碎裂岩化英安岩,成因类型属中-低温岩浆热液矿床,成矿时代为燕山期。本文通过分析该区区域地质背景、矿区地质、矿体特征,总结了矿床成因及找矿标志,为区域多金属矿勘查提供地质依据。

广东省英德市杉木塘铅锌多金属矿矿床成因及找矿标志

杉木塘铅锌矿位于粤北曲江—英德断陷盆地,地处南岭纬向构造带的中段。出露地层主要有古生代下石炭统石磴子组(C1s)及新生界第四系(Q)等,矿床成因类型属中低温热(汽)液构造活动成矿。主要对区域地质背景、矿区地质特征、围岩蚀变及矿体特征等进行分析,并研究了该区矿床成因及找矿标志,为下一步找矿指明了方向。

陕西省宁陕县杨泗庙-懒板凳一带钨钼多金属矿矿体特征及找矿标志

宁陕县杨泗庙—镇安懒板凳一带的钨矿床整体受晚古生代碳酸盐岩沉积-海西期变质建造控制,成矿流体和成矿物质来源于燕山期花岗岩岩浆,懒板凳岩体为宁陕县杨泗庙-镇安懒板凳地区成矿提供有利的热动力条件和介质条件;石瓮子组为区内有利成矿地层;懒板凳岩体外围石瓮子组碳酸盐岩地层形成的矽卡岩带,是矽卡岩型钨矿赋存的有利层位。

河北省承德县王家庄北沟钼矿床地质特征、矿床成因及找矿标志

王家庄北沟钼矿床位于河北省承德县。钼矿体受近东西向正断层控制,赋存在中元古代蓟县群雾迷山组白云岩构造破碎带和下白垩统的张家口组火山岩内,并与局部发育钼矿化的石英闪长玢岩脉关系紧密。钼矿体呈似层状分布,主要为氧化矿石和混合矿石。氧化矿石发育蜂窝状和角砾状构造,混合矿石呈现脉状、浸染状、角砾状等构造。金属矿物主要为辉钼矿、钼华等。因此推测王家庄北沟钼矿床受构造破碎带控制的浅成—超浅成中低温热液型钼矿床。地表的钼华、铁帽等是直接找矿标志,构造交汇位置、元素组合异常是主要的间接找矿标志。

山西省盂县牛郎湾村一带饰面用大理岩矿矿床地质特征及质量评价

山西省盂县牛郎湾大理岩矿位于阜平穹状隆起西南缘七东山倒转向斜的北翼,赋矿地层为古元古界滹沱群七东山组二段;矿体以紫红色角砾状大理岩为主,另有少量青灰色大理岩,矿体顶、底板为灰白色大理岩;矿区共圈定4个大理岩矿体,矿体长度为2000~3350 m,厚度5~20 m;矿体产状倾向170°~190°,倾角24°~35°。大理岩样品经过物理试验检测,均达到且优于行业规范要求的技术指标;样品经放射性预检测,达到A类产品的技术指标;石材荒料率统计表明,矿区大理岩荒料块度≥1.0 m^(3)的约占71%,<1 m^(3)的约占29%;矿区饰面石材的资源储量丰富,具有较好的经济价值和开发前景。

铁矿矿床地质特征及找矿标志研究

本研究聚焦于特定区域的铁矿矿床,通过对矿床地质特征和找矿标志的深入研究,揭示了铁矿矿床的地质结构、成矿条件及成因机制。研究发现,该区域铁矿体受特定地层的严格控制,与围岩差异显著,为地球物理和地球化学勘查提供了明确的找矿标志。此外,褶皱构造与断裂系统的活动为铁矿成矿提供了有利的空间条件。本研究不仅为未来铁矿勘探与开发提供了科学依据,也为铁矿矿床地质学的发展及我国铁矿资源勘查能力的提升贡献了新的认识与思路。后续找矿工作应侧重于对复向斜北翼磁异常区的深入探索,以期为我国铁矿资源的可持续利用奠定坚实基础。

西藏驱龙超大型斑岩铜(钼)矿床:发现、特征及意义

驱龙斑岩铜 (钼 )矿床位于冈底斯东段火山岩浆弧与日多盆地的弧 -盆转换部位 ,受盆缘控盆、控岩构造控制 ,形成于汇聚造山向伸展走滑转换的瞬时过渡环境 (15～ 16Ma) ,是冈底斯东段新发现的最具找矿潜力的超大型斑岩铜 (钼 )矿床 ,也是该带斑岩矿床勘查的重大突破 .该矿床成矿流体为饱和及过饱和盐水 -蒸气沸腾流体 ,蚀变具有以斑岩体为中心、面状、环带分布特征 ,矿化分为 3期 5阶段 ,硬石膏化及绢英岩化与铜矿化关系密切 .并对一些今后必须加强研究的关键性科学问题进行了探讨 .

锡铁山块状硫化物铅锌矿床成矿构造环境及矿区南部找矿潜力：来自滩间山群火山岩岩石化学、地球化学证据

近年来海底块状硫化物矿床的深入研究表明,块状硫化物矿床形成与其成矿构造环境演化期间特定阶段的构造-火山作用有关,矿床持续形成时间一般不超过几个百万年。锡铁山矿床是我国西北地区最大的海底热液块状硫化物铅锌矿床,本文通过锡铁山矿床赋矿岩系火山岩岩石化学及地球化学特征的系统研究,对锡铁山矿床赋矿火山岩系岩浆演化过程及成矿构造环境得出如下几点认识:(1)锡铁山矿区赋矿滩间山群火山岩岩石化学及地球化学特征一致表明滩间山群岩浆活动具有自酸性向基性同源岩浆演化的特点。矿区滩间山群不同岩组/段的火山岩代表了同源岩浆不同演化阶段的产物。自O1-2tna-1岩段、O1-2tnb岩组→O1-2tnd-1岩段→O1-2tnd-3岩段,矿区火山岩岩石化学及稀土与微量元素地球化学具有明显的渐变过渡关系。(2)矿区滩间山群火山岩稀土、微量元素组成特征及成岩构造环境判别图解一致揭示,从O1-2tna-1岩段、O1-2tnb岩组→O1-2tnd-1岩段→O1-2tnd-3岩段,滩间山群火山岩成岩构造环境经历了从陆缘基底岛弧→洋陆过渡型地壳→典型大洋地壳的连续过渡变化。(3)矿区滩间山群火山岩岩浆演化过程及Rb、Sr组分变化趋势与大陆边缘弧后盆地火山岩岩浆演化过程相近,与现代西太平洋冲绳海槽形成过程相似。(4)综上推断,矿区深部及外围找矿工作的重点对象是弧后盆地拉张早期形成的具有双峰式火山岩组合的下部火山-沉积组合,而矿区南部O1-2tnd岩组找寻同类矿床的可能性不大。

新疆莱历斯高尔铜钼矿找矿方法及综合信息找矿模型

莱历斯高尔铜钼矿位于哈萨克斯坦-准噶尔板块伊犁-伊塞克湖微板块内的博罗科努古生代复合岛弧带西段南侧,是新疆地矿局近年在西天山新发现的一处斑岩型铜钼矿床.矿区属高寒山区,地形切割剧烈,常规的电法难以发挥应有的找矿作用,应用轻便双频激电法取代常规的大功率激电法配合地质和化探开展综合找矿取得了较好效果.在综合分析莱历斯高尔铜钼矿成矿地质条件、铜钼组合地球化学异常、双频激电异常特征基础上,初步分析总结了莱历斯高尔铜钼矿地质-地球化学-地球物理综合信息找矿模型和高寒山区的勘查方法技术组合,为区域上寻找与莱历斯高尔铜钼矿类似的斑岩型矿床提供一定的借鉴和参考.

福建省永定县大排铅锌矿床成矿地质特征及找矿新进展

福建省永定县大排铅锌矿床是闽西南坳陷带新近发现的具中型规模铅锌多金属层控夕卡岩型矿床,从控矿因素分析,矿床主要受岩体、层位、构造共同控制,主要控矿岩体为燕山晚期花岗闪长斑岩岩体,主要成矿层位为二叠系下统的栖霞组,主要赋矿构造是推覆构造所夹持的层间构造破碎带。