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1.
砷铅铁矾一般产出于含砷硫化物矿床氧化带铁帽中,常见与之共生的矿物有臭葱石、砷铅石、砷铅铁石、乳砷铅铜石等砷酸盐类矿物。该矿物呈菱面体晶体,常呈假立方体状、粒状和球粒状。暗黄绿色。Hm=3.5,Hv=375kg/mm^2,Dm=4。广西平桂矿区产出的砷铅铁矾的化学成份W(B)/%为:PbO31.18,Fe2O3 31.38,As2O5 18.87,SO3 10.84,H2O 8,据此计算的矿物分子式为:Pb0.99Fe2.80(AsO4)1.17(SO4)0.96(OH)6.24。广西德保矿区产出的含铜较高的铜砷铅铁矾(?)的平均化学成份.W(B)/%为:PbO 31.72,Fe2O3 29.21,CuO 7.96,As2O5 14.84,SO3 9.88,H2O 8,据此计算的矿物分子式为:Pb0.99Fe2.61Cu0.69(AsO4)0.89(SO4)0.86o(OH)7.20砷铅铁矾(德保)的粉晶X射线分析主要衍射强线有:5.90(9),3.65(5),3.07(10),2.29(8),1.976(6)。晶胞参数为:a0=0.732nm,c0=1.702nm,Z=3。三方晶系,空间群为R3m。红外吸收光谱分析显示有波数/cm^-1为3475,3402,3212,1639,993,919,825,763,549,535.428等吸收带。差热分析显示有460C,770C和910C3个明显的吸热谷。  相似文献   

2.
矿物名称英文名称化学成分式参考文献砷钮铝石ArsejlogoyazitS,AIJ(AsQ‘);(OH)、·H:OSchweiz Minp已tro Mitt64 11一19铁钒矿经砷钙披石硫铱锗矿水轻砷铝石氯锢碱矾水锑铝铜石硅钾钦石料方锰顽辉石督三水铝石褐磷锰高铁石BerdesillskiiteBerg,logir己BowieiteBulaehiteC孟一latiiteCualstibit:VZTIOSCo Ue AsO,(OH)(Rh,lr。Pr)2匀A12(Aso。)(OH):·3H2妇K一Cti;O:(50‘).MeCI(Me:N。&/or Cu)CuoAIssb吕01:·16H20KZI‘151502£Ti一analogue of Dalyile(Mn,Mg)Mg 512场A;(oH)3 a.、。w polymorph ofA!(011):M,12…  相似文献   

3.
氯黄晶产于次生石英岩中,共生矿物有:石英、叶腊石、绿帘石、黄铁矿、一水铝石等。该矿物无色透明,无解理,晶形为四面体、立方体和八面体,常见聚形。矿物粒径多小于0.05mm。D=2.88±0.05,N=1.584±0.002。不溶于氢氟酸。氯黄晶的电子探针分析结果(%):SiO_2 24.21,Al_2O_3 55.22,MgO 0.06,Na_2O 0.04,CaO0.01,TiO_2 0.01,MnO 0.01,Cr_2O_3 0.02。阴离子组分化学分析结果(%):CO_2 0.21,H_2O~+10.38,F 6.89,Cl 2.65。矿物化学式为:Al_(13)Si_5O_(20)[(OH)_(14)F_4]Cl。矿物粉晶X射线衍射主要特征线条为:7.985(53)(111),4.185(65)(311),4.008(67)(222),3.182(18)(331),2.83(32)(422),2.673(100)双线(333,511),2.115(20)(533),2.003(29)(444).1.806(22)双线(731,553)。1.635(29)双线(660,822)。氯黄晶红外吸收谱带(4000—2000cm~(-1))主要是OH的伸缩振动,(1200—200cm~(-1))为四次配位的Al—O、Si—O的伸缩振动和弯曲振动以及6次配位的Al—O的振动。  相似文献   

4.
采用x射线粉晶衍射(XRD)、博里叶变换红外光谱(FTI码以及拉曼光谱等方法对安徽马鞍山具磷灰石假象的绿松石进行了研究。结果表明:其主要矿物组成为绿松石,保留了磷灰石六边形的形态特征。XRD~U试的特征谱线d值为36745~36748(111)、29008~29025(123)、34247~34293(2101、32709~32781(113)、61626~61781(011)3020130~20162(301),与绿松石的标准衍射谱线基本致。红外光谱测试分析表明:3510~3465cm。间的谱带归属绿松石0(OH)的伸缩振动,3300~3070cm’间的谱带归属为绿松Nu(M-H。O)伸缩振动,1210-1012cm’间的谱带归属为绿松石U3口O。)ira缩振动,在838cm。附近的吸收谱带归属为绿松石6(OH)弯曲振动,655-480cm。间的谱带归属为绿松石u4(P04)弯曲振动。拉曼光谱测试分析表明:3466cm’附近的尖锐拉曼谱峰归属于绿松石(OH)基团的伸缩振动所致,宽缓的拉曼谱峰3281cm’~03078cm’归属于绿松石中水合络离子的伸缩振动,798cm’谱峰则是由于OH的弯曲振动所致。  相似文献   

5.
我国内蒙古发现的砷铁钙石   总被引:1,自引:0,他引:1  
砷铁钙石发现于内蒙古白云石大理岩中的金砷铅矿体内,共生的主要矿物有砷铁矾、砷铅石、臭葱石、自然金等。砷铁钙石为金黄色放射状,半金属光泽或丝绢光泽,比重3.56,摩氏硬度4.5,折光率值大于1.800,二轴晶(一)。针铁钙石的化学成分(%)为:CaO 12.96,Fe2O3 28.00,As2O5 40.49,MgO 0.30,H2O 10.35 Pb-O 0.19,总计92.29。结晶化学式为:Ca3Fe^ (AsO4)4(OH)6·3H2O。X射线为晶衍射强度有:8.948(100,200),2.961(44,600),2.777(6,204),2.222(19)。主要红外吸收谱带在3366,1634,946,787,507cm^-1处。  相似文献   

6.
大别山区石英质玉宝石矿物学特征研究   总被引:1,自引:0,他引:1  
大别山区石英质玉属新近发现的一种石英质玉(简称"大别山玉"),具色彩绚丽、质地细腻温润等特点。利用偏光显微镜、扫描电子显微镜、X射线粉末衍射、化学分析、红外光谱分析等方法,重点对"大别山玉"的矿物组成、化学成分、物理光学性质、微结构、红外吸收光谱等特征进行研究。结果表明,"大别山玉"具较典型的微粒-细粒结构,主要矿物为石英,含少量的绢云母、绿泥石、萤石、黄铁矿及其它粘土矿物等次要矿物,实属石英质玉;其化学成分相对较纯,主成分为SiO2,含少量的Al2O3,CaO,MgO,Fe2O3,FeO,K2O等;其红外反射光谱以Si—O非对称伸缩振动致特征的1177,1104 cm-1谱带、Si—O—Si对称伸缩振动致800,781cm-1分裂谱带以及由Si—O弯曲振动致492 cm-1较强谱带和542 cm-1弱谱带为特征。同时,还对"大别山玉"的结晶度及水的赋存状态一并给予了探讨。  相似文献   

7.
马鞍山绿松石中水的振动光谱表征及其意义   总被引:8,自引:0,他引:8  
在室温和变温条件下对安徽马鞍山绿松石中水的结构特征进行红外吸收光谱和激光拉曼光谱分析研究,结果表明:绿松石中部分水分子与Cu2 结合成[Cu(H2O)4]2 水合离子,并在很大程度上制约了绿松石的颜色;马鞍山地区绿松石中结晶水的脱失温度约为303℃~310℃,结构水的脱失温度约为346℃~375℃。绿松石中H2O,OH-的振动是导致其水的激光拉曼光谱形成的主要原因,ν(OH)振动导致的强拉曼特征谱峰在3470 cm-1,3502 cm-1~3505 cm-1之间的弱谱峰则隶属3470 cm-1的次级谱峰,ν(H2O)的拉曼谱峰主峰位于3442 cm-1~3449 cm-1处。由ν(MFe,Cu-H2O)伸缩振动致平缓的拉曼谱峰主要分布在3074 cm-1~3303 cm-1附近。  相似文献   

8.
合成变石的晶体结构、化学成分及宝石学特征与天然变石基本一致,常规宝石学检测方法很难区分。实验采用红外光谱仪和拉曼光谱仪测试分析,发现天然变石以2 800cm~(-1)~3 300cm~(-1) O—H伸缩振动和2 362cm~(-1) CO_2伸缩振动为红外特征吸收峰,而提拉法合成变石无此特征吸收;拉曼分析中,638cm~(-1) Be—O弯曲振动为天然变石的特征吸收,674cm~(-1) Be—O伸缩振动、708cm~(-1) Be—O弯曲振动、473cm~(-1) Al—O平移运动为提拉法合成变石的特征吸收;对天然变石与提拉法合成变石拉曼谱932cm~(-1)进行洛伦兹线性拟合,得到天然变石半高宽均在17.0cm~(-1)以上,而提拉法合成变石均在17.0cm~(-1)以下。  相似文献   

9.
过去对硫化矿床氧化带的次生富集矿物及钒类矿物研究较多,对砷酸盐矿物研究较少,尤其对氧化铜矿石和褐铁矿石中的砷赋存状态研究更少。经过几年的努力,我们在住北矽卡岩锡矿床氧化带中共发现16种砷酸盐矿物,其中一种定名为德保石(待审批的新矿物);一种是有疑义的矿物——硅砷铜石(?);其余为:光线石[Cu_3(AsO_4)(OH)_3]、橄榄铜矿[Cu_2(AsO_4)(OH)]、墨绿砷铜石[Cu_5(AsO_4)_2(OH)_4H_2O]、羟砷铜石[Cu_5(AsO_4)_2(OH)_4H_2O]、砷钙铜石[CaCu(AsO_4)  相似文献   

10.
常温和压力0.1~1300 MPa下硬石膏的拉曼光谱研究   总被引:1,自引:0,他引:1  
杨玉萍  郑海飞 《矿物学报》2005,25(3):299-302
利用立方氧化锆压腔装置测量了高压下硬石膏中硫酸根离子内部S-O键的四个振动(对称伸缩振动、弯曲振动、反对称伸缩振动和变形弯曲振动)的拉曼位移,研究结果表明:在25℃和0.1~1300MPa压力范围内硬石膏未发生相变,所观察到的硬石膏各个拉曼峰的位移值随压力的增加而线性增加,它们与压力之间的关系可分别表达为:υ1018=0.0053p+1016.8,υ417=0.0013p+416.82,υ498=0.0044P+499.25,υ1129=0.0052p+1128.5,υ1160=0.0067p+1159.5,υ608=0.0028p+608.76,υ627=0.0036p+627.01,υ675=0.0039p+675.32,且伸缩振动受压力的影响比弯曲振动大。其1018cm^-1峰强度大,是石英464cm^-1峰的6倍,因此硬石膏也是宝石压腔良好的压力标定物质。  相似文献   

11.
Lithostratigraphy, physicochemical stratigraphy, biostratigraphy, and geochronology of the 77–70 Ma old series bracketing the Campanian–Maastrichtian boundary have been investigated by 70 experts. For the first time, direct relationships between macro- and microfossils have been established, as well as direct and indirect relationships between chemo-physical and biostratigraphical tools. A combination of criteria for selecting the boundary level, duration estimates, uncertainties on durations and on the location of biohorizons have been considered; new chronostratigraphic units are proposed. The geological site at Tercis is accepted by the Commission on Stratigraphy as the international reference for the stratigraphy of the studied interval. To cite this article: G.S. Odin, C. R. Geoscience 334 (2002) 409–414.  相似文献   

12.
Well investigated platforms have been selected in each continent, and the history of Cretaceous transgressions and regressions there is concisely reviewed from the available evidence. The factual records have been summarized into a diagram and the timing of the events correlated between distant as well as adjoining areas.On a global scale, major transgressions were stepwise enlarged in space and time from the Neocomian, via Aptian-Albian, to the Late Cretaceous, and the post-Cretaceous regression was very remarkable. Minor cycles of transgression-regression were not always synchronous between different areas. Some of them were, however, nearly synchronous between the areas facing the same ocean.Tectono-eustasy may have been the main cause of the phenomena of transgression-regression, but certain kinds of other tectonic movements which affected even the so-called stable platforms were also responsible for the phenomena. The combined effects of various causes may have been unusual in the Cretaceous, since it was a period of global tectonic activity. The slowing down of this activity followed by readjustments may have been the cause of the global regression at the end of the Cretaceous.  相似文献   

13.
The Afyon stratovolcano exhibits lamprophyric rocks, emplaced as hydrovolcanic products, aphanitic lava flows and dyke intrusions, during the final stages of volcanic activity. Most of the Afyon volcanics belong to the silica-saturated alkaline suite, as potassic trachyandesites and trachytes, while the products of the latest activity are lamproitic lamprophyres (jumillite, orendite, verite, fitztroyite) and alkaline lamprophyres (campto-sannaite, sannaite, hyalo-monchiquite, analcime–monchiquite). Afyon lamprophyres exhibit LILE and Zr enrichments, related to mantle metasomatism.  相似文献   

14.
正20140751 Guo Xincheng(Geological Party,BGMRED of Xinjiang,Changji 831100,China);Zheng Yuzhuang Determination and Geological Significance of the Mesoarchean Craton in Western Kunlun Mountains,Xinjiang,China(Geological Review,ISSN0371-5736,CN11-1952/P,59(3),2013,p.401-412,8  相似文献   

15.
正20141058 Chen Ling(Key Laboratory of Mathematical Geology of Sichuan Province,Chengdu University of Technology,Chengdu610059,China);Guo Ke Study of Geochemical Ore-Forming Anomaly Identification Based on the Theory of Blind Source Separation(Geosci-  相似文献   

16.
SEISMIC GEOLOGY     
正20141334 Chen Kun(Institute of Geophysics,China Earthquake Administration,Beijing100081,China);Yu Yanxiang Shakemap of Peak Ground Acceleration with Bias Correction for the Lushan,Sichuan Earthquake on April20,2013(Seismology and Geology,ISSN0253-4967,CN11-2192/P,35(3),2013,p.627-633,2 illus.,1 table,9 refs.)Key words:great earthquakes,Sichuan Province  相似文献   

17.
正20141624 Cai Xiongfei(Key Laboratory of Geobiology and Environmental Geology,Ministry of Education,China University of Geosciences,Wuhan 430074,China);Yang Jie A Restudy of the Upper Sinian Zhengmuguan and Tuerkeng Formations in the Helan Mountains(Journal of Stratigraphy,ISSN0253-4959CN32-1187/P,37(3),2013,p.377-386,5 illus.,2 tables,10 refs.)  相似文献   

18.
PALEONTOLOGY     
正20142263Lü Shaojun(Geological Survey of Jiangxi Province,Nanchang 330030,China)Early-Middle Permian Biostratigraphical Characteristics in Qiangduo Area,Tibet(Resources SurveyEnvironment,ISSN1671-4814,CN32-1640/N,34(4),2013,p.221-227,2illus.,2tables,22refs.)Key words:biostratigraphy,Lower Permian,Middle Permian,Tibet  相似文献   

19.
正20142560Hu Hongxia(Regional Geological and Mineral Resources Survey of Jilin Province,Changchun 130022,China);Dai Lixia Application of GIS Map Projection Transformation in Geological Work(Jilin Geology,ISSN1001-2427,CN22-1099/P,32(4),2013,p.160-163,4illus.,2refs.)  相似文献   

20.
GEOCHEMISTRY     
正20140692 Duo Tianhui(No.402 Geological Team,Exploration of Geology and Mineral Resources of Sichuan Authority,Chengdu611730,China);Wang Yongli Computer Simulation of Neptunium Existing Forms in the Groundwater(Computing Techniques for Geophysical and Geochemical Exploration,ISSN1001-1749,CN51-1242/P,35(3),  相似文献   

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