This data is the U-Pb age of cassiterite. The samples were collected from cassiterite minerals in skarn type and quartz vein type ores in Songshan tin mine, western Yunnan. The U-Pb geochronology of cassiterite was studied by laser denudation inductively coupled plasma mass spectrometry. The 207Pb / 206Pb - 238U / 206Pb harmonic ages of the two cassiterite samples were 76.6 ± 1.5 Ma and 79.6 ± 3.6 Ma respectively, It shows that the tin mineralization of the Songshan tin deposit mainly occurred in the Late Cretaceous, which is obviously different from the emplacement time of Lincang granite (Triassic). Combined with geological characteristics and previous chronological results, this paper believes that there is an obvious tin mineralization event in the Late Cretaceous in this area. The next prospecting work in this area should focus on the contact zone between rock mass and surrounding rock, as well as the faults in the rock mass and surrounding rock.
LI Xiaofeng
This data set includes whole-rock major trace and isotopic geochemical data, monazite, and zircon radioisotope dating data. The samples were collected from the Laguigangri dome of the Himalayan orogenic belt in southern Tibet. The geochemical data of major elements in the whole rock are obtained by X-ray fluorescence spectrometer, the trace elements are obtained by inductively coupled plasma mass spectrometer, and the radioisotope dating of monazite and zircon is obtained by laser denudation inductively coupled plasma mass spectrometer. The data quality is high. These data show that the leucogranitic magma in the Himalayan orogenic belt was formed in multiple stages and came from different homologous areas, which provides a key limit for the magmatic formation mechanism.
LIU Xiaochi
This data includes main and micro geochemical data of the whole rock, 40Ar / 39Ar dating data of phlogopite, and Sr-Nd isotope data of the whole rock. The samples were collected from the edge of the Ramba dome in eastern Tibet. The argon isotope of phlogopite uses the stage heating method, and the plateau age and isochron age are calculated by ArArCALC software; The major elements in the whole rock were analyzed by X-ray fluorescence spectrometry (XRF); Trace elements in the whole rock were measured by Quadrupole Inductively coupled plasma mass spectrometer (Q-ICPMS); Sr-Nd isotopic composition was obtained by MC-ICP-MS. The data obtained show that the age of the phlogopite plateau is 13.1 ± 0.18 Ma, which is consistent with the inverse isochron age; The ultrapotassic melt comes from the partial melting of lithospheric mantle in the Indian continent, and the source depth is shallow, so it should be a spinel stable area.
LIU Zhi-Chao
This data includes whole-rock major and trace geochemical data, zircon major elements data, and whole-rock Sr-Nd-Hf isotopic composition data. The samples were collected from the Kangba dome in southern Tibet. The major elements in the whole rock were analyzed by X-ray fluorescence spectrometry (XRF) glass melting sheet method; The trace elements in the whole rock were dissolved by mixed acid dissolution method and tested by Quadrupole Inductively coupled plasma mass spectrometer (Q-ICPMS); The major elements of zircon were analyzed by electron microprobe; For the analysis of Sr-Nd-Hf isotopic composition of the whole rock, the accurate content of three elements is determined by quadrupole ICP-MS, and then the isotopic ratio is determined by MC-ICP-MS. The data obtained show that Kangba leucogranite is crystallized from highly evolved magma that has experienced strong crystallization differentiation. Strong hydrothermal exsolution has occurred in the diagenetic process, and the isotopes of the magmatic system have migrated to varying degrees in the process of hydrothermal fluid. It is also obviously contaminated by the surrounding rock.
LIU Zhi-Chao
This data includes whole-rock major and trace geochemical data, plagioclase major element data, alkali feldspar major element data, muscovite major element data, tourmaline major element data, and monazite trace element data. The samples were collected from the Gaowu rock mass in the Yadong area, southern Tibet. The major elements in the whole rock were analyzed by X-ray fluorescence spectrometry (XRF) glass melting sheet method; The trace elements in the whole rock were dissolved by mixed acid dissolution method and tested by Quadrupole Inductively coupled plasma mass spectrometer (Q-ICPMS); The major mineral elements were analyzed by electron microprobe; The mineral trace elements were obtained by ArF excimer laser ablation system and quadrupole inductively coupled plasma mass spectrometer. The data obtained show that the Gaowu tourmaline muscovite granite shows the characteristics of high evolution magma.
LIU Zhi-Chao
The data are monazite and zircon U-Pb ages. Three samples of carbonatite and pegmatite were collected (2018kl06 is carbonatite, 2018kl101 is tourmaline bearing pegmatite near carbonatite, 2018kl08-2 is beryl bearing pegmatite). After crushing, heavy sand minerals were separated by manual elutriation. After magnetic and electromagnetic separation, monazite (about 500 grains) and zircon (more than 1000 grains) were picked out under binocular lens. After selecting representative monazite as target, the internal structure of monazite was studied by BSE through microscope transmission light and reflection light photography. U-Pb chronology was completed on the 193 nm laser ablation system (new wave) and multi receiver inductively coupled plasma mass spectrometer in the laboratory of Tianjin Institute of Geology and mineral resources. In 2018kl06 carbonatite, the intersection age of the reverse inconsistency line of 17 test points is 18.2 ± 0.3 Ma, while the average age of 9 test points with complete harmony is 18.15 ± 0.22 Ma; The monazite of sample 2018kl101 obtained 15 measuring points with concordance greater than 90%, and the average age is 19.39 ± 0.36 Ma; The average age of 20 zircon sites of sample 2018kl08-2 is 197.5 ± 1.4 ma. They are Cenozoic and Mesozoic (19 ~ 18 Ma and 200 MA), respectively. The early beryl bearing pegmatite was formed in the extension stage after the closure of the paleoTethys ocean, while the Cenozoic bastnaesite carbonatite pegmatite assemblage is related to the Cenozoic intracontinental strike slip extension event, indicating that the extension strike slip of Pamir structural junction may start at 19 ma. Combined with the characteristics of regional geochemical anomalies, it shows that a breakthrough in rare and light rare earth prospecting is expected in Pamir area.
WANG Wei
This data is monazite U-Pb age. The samples are collected from the light colored veins closely associated with the lead-zinc ore. after crushing, the heavy sand minerals are separated by manual elutriation. After magnetic separation and electromagnetic separation, monazite (about 500 grains) are picked out under binocular lens. After selecting representative monazite as target, the internal structure of monazite was studied by BSE through microscope transmission light and reflection light photography. U-Pb chronology was completed on 193 nm laser ablation system (new wave) and multi receiver inductively coupled plasma mass spectrometer (MC-ICP-MS, Neptune) in the laboratory of Tianjin Institute of Geology and mineral resources. The average 206Pb / 238U surface age obtained from 21 survey points is 99.25 ± 0.78 MA (mswd = 1.60). This age represents the crystallization age of light vein closely related to lead-zinc mineralization. It is determined that the formation of the deposit is related to the hydrothermal solution in the late evolution of Cretaceous magmatic rocks. According to the comprehensive analysis of regional geochemical exploration and regional geological background, it is considered that the giant lead-zinc ore belt distributed in Tianshuihai Karakoram is controlled by Jurassic Cretaceous volcanic sedimentary basin and Cretaceous magmatic rocks. This metallogenic belt has great prospecting potential.
WANG Wei
This data includes the main trace geochemical data of the whole rock. The samples were collected from lalitoushan rock mass at the north end of the Changning-Menglian junction zone in western Yunnan. The main geochemical data of the whole rock are obtained by X-ray fluorescence spectrometer, and the trace elements are obtained by inductively coupled plasma mass spectrometry. Based on the obtained data, it is considered that the initial magma is mainly composed of continental crust and the addition of mantle-derived components. The rock mass belongs to S-type granite, which originates from the partial melting of ancient crustal materials and is mixed with mantle-derived magma. It represents the product under the dynamic background of transformation from compression to extension in the post continental collision stage of Baoshan Simao block and has the material basis for mineralization, It has certain prospecting potential.
XU Heng
This data includes the main trace geochemistry and Sr-Nd isotope data of the whole rock. The samples were collected from four rock bodies in the West Kunlun Pamir area. The main geochemical data of the whole rock are obtained by X-ray fluorescence spectrometer, the trace elements are obtained by inductively coupled plasma mass spectrometer, and the Sr-Nd isotopic data of the whole rock are obtained by multi-collector inductively coupled plasma mass spectrometer. Through the obtained data, the magma source areas are defined as the mixing of Mesoproterozoic ancient basement rocks and juvenile crustal materials, the mixing of meta-igneous rocks, and meta-sedimentary rocks, and Mesoproterozoic ancient basement rocks, which help understand regional magmatism and tectonic evolution.
YIN Jiyuan
This data set includes cathodoluminescence images (CL images) of detrital zircons from sandstone of Late Carboniferous-Late Permian strata in the Southern Qiangtang terrane and Early Cretaceous Hauterivian-Albian strata in the Bangong‐Nujiang suture zone, Tibetan Plateau. The sampling and shooting time is 2018-2019. The sampling areas of Late Carboniferous-Late Permian strata are Jiaco and Ritu areas of the Southern Qiangtang terrane. The sampling areas of Early Cretaceous Hauterivian-Albian strata are Baerqiao, Mabujiaco, Duochang and Kama areas of the Bangong‐Nujiang suture zone. CL images were taken in the Continental Dynamics Laboratory, Chinese Academy of Geological Sciences, Beijing, China These data provide a key limit for understanding the closing of the Bangong‐Nujiang suture zone. The opening time of Bangong‐Nujiang Ocean is limited to 300-279Ma, and the closing time is limited to 110-100 Ma, which is of great significance to explore the tectonic evolution of Tethys Ocean. The related articles of the data set have been published in the well-known journals《Palaeogeography, Palaeoclimatology, Palaeoecology》,《Tectonics》,《Geoscience Frontiers》, and the data results are true and reliable.
FAN Jianjun
This data set is the zircon cathodoluminescence image data (CL image) and chronology data set of rencuo ophiolite in the central Qinghai Xizang Plateau. The lithology of the sample includes gabbro, diabase and plagioclase granite. The formation age is about 160-150ma, and the sampling and shooting time is 2019-2020. The separation of zircon was completed in Hebei Regional Geological Survey Institute. Conventional heavy liquid and magnetic separation methods were used for separation, and finally pure zircon was selected under binocular microscope. The sample target was prepared in the Institute of geology, Chinese Academy of Geological Sciences. The diameter of the sample target was 25 mm. The cathode fluorescence image analysis of zircon was completed on the cathode fluorescence analysis system of Institute of geology, Chinese Academy of Geological Sciences (Hitach s-3000n field emission environmental scanning electron microscope and chroma cathode fluorescence spectrometer of Gatan company). Zircon U-Pb dating data were obtained by shrimp II ion probe of Beijing ion probe center, and the data accuracy was ~ 0.5-1ma. These data provide a key limit for understanding the formation and evolution of the Tethys ocean in the Qinghai Tibet Plateau, and have comparative significance for the study of oceanic zircons. The data association results have been published in the Geological Society of America Bulletin. The data results have been peer reviewed and the data quality is true and reliable.
TANG Yue
This data set contains zircon U-Pb dating, zircon Hf isotope, whole rock major and trace elements, and whole rock SR Nd isotope data of Cambrian magmatic rocks in the central Qinghai Tibet Plateau, from Zhai Qingguo research team, Institute of geology, Chinese Academy of Geological Sciences. The data quality is excellent, which can be used for the study of the early formation and evolution of the Qinghai Tibet Plateau and the paleogeographic reconstruction of the Precambrian supercontinent, as well as the reconstruction of global ancient plates and paleogeographic restoration. This provides key information for understanding the early evolution of the Qinghai Tibet Plateau. Zircon U-Pb dating data were obtained by shrimp II ion probe, and zircon HF isotopes were obtained by Neptune multicollector (MC) ICP-MS equipped with a geolas 200 m ARF exciter 193 nm laser ablation system.
TANG Yue
Data content: This data set is the quantitative comprehensive mineral facies analysis data of tectonite from RAMBA gneiss dome obtained by the Tescan Integrated Mineral Analyzer. The data includes the type, content, structural characteristics, distribution characteristics of the whole mineral facies in the tectonite, as well as the type, abundance and main hosted mineral facies information of the full spectrum elements. Data source and processing method: The data were obtained by four high spatial and temporal resolution EDAX energy spectrometers mounted on a Tescan field emission scanning electron microscope. The electrons outside the atomic nucleus of a measuring point on the mineral surface are bombarded by a high-energy electron beam, the transition between different energy levels or excited to escape into free electrons and release photons with a certain energy. The type and content of the mineral element can be accurately calibrated by the signals captured by different energy channels of the energy spectrum detector. Then, automatic comparison and matching are carried out in the database with nearly 5000 mineral phases, so as to fulfill the accurate determination of mineral phases and the element abundance mapping. The voltage is 25 kV, the working distance is 15mm, and the spot size is 100nm. Data quality description: Due to four energy spectrum detectors being equipped, the data acquisition time is short, the accuracy is high, the requirements for sample morphology are low, the detection limit is low, the data quality is very high and strongly reliable. Data application achievements and prospects: Sample size is 27mm x 47mm standard optical thin section, scanning area is full slice scanning with High-resolution scanning mode, and the step size is set to 1μm. Through data analysis, we have obtained the mineral assemblage characteristics of each structural unit of the Ramba gneiss dome, completed the metamorphic grade and metamorphic facies zoning, and put forward the structural thermal evolution model of the Ramba gneiss dome. This technic has been widely recognized and used in structural geology, petrology, geochronology, ore selecting, metallurgy, metal processing and manufacturing, and other disciplines and industries.
CHEN Siyu
This set of data is used to reconstruct the magnetostratigraphy of the Hoh Xil basin in the interior of the Qinghai-Tibet Plateau and the Sichuan Basinaround the eastern margin of the plateau, and then combined with other chronological methods to establish high-precision chronological scales of the two basins. All the data are thermal demagnetization data, including two parts: one is the paleomagnetic data of the strata about 1000 meters in the top of the Hoh Xil basin; The second is the paleomagnetic data of the bottom strata in Sichuan Basin. The data were measured or obtained in the State Key Laboratory of continental dynamics, Northwestern University and the laboratory of paleomagnetism and geochronology, Institute of Geology and Geophysics, Chinese Academy of Sciences. The preliminary processing results show that the data quality is high.
LIANG Wentian
1) The data set includes the whole rock XRD data of Zhijin and Weng'an phosphorites, SEM data and TEM data of Zhijin phosphorites in Guizhou Province. The purpose of this data set is to provide the macro and micro mineral composition information of Guizhou phosphorites from micro scale to nano scale and sub nano scale; 2) The three data were obtained by XRD, SEM and TEM, respectively. The whole rock XRD data is obtained by grinding the sample into powder, the SEM image is obtained by making the block sample into thin section, and the TEM image is obtained by powder method, ion thinning method, ultra-thin section method and FIB method. 3) The data set can well show the mineral composition of Zhijin phosphate rock and Weng'an phosphate rock in Guizhou; 4) This data is of great significance for a detailed understanding of the mineral composition, morphology, distribution state between minerals of Zhijin and Weng'an phosphate deposits in Guizhou, and for understanding the sedimentary environment and formation process of phosphate deposits in this area.
XING Jieqi, ZHANG Zeyang
The data of this project after sampling and testing are as follows: (1) In 2017, bedrock core samples from 2 and 3 boreholes were collected from renju rare earth mining area in Guangdong Province. After mechanical crushing, slicing and single mineral selection, they passed the Key Laboratory of minerals and mineralization, Guangzhou Institute of geochemistry, Chinese Academy of Sciences, and Australian analytical testing (Guangzhou) testing company used X-ray powder diffractometer, X-ray fluorescence spectrometer and X-ray fluorescence spectrometer The mineral composition, iron oxide composition, whole rock chemical composition, mineral chemical composition, rare earth occurrence state and other data of 2 # and 3 # boreholes in renju rare earth deposit in Guangdong Province were measured by ICP-AES, visible short wave infrared reflectance spectroscopy and electron microscope; (2) In 2018, goethite samples were synthesized in the Key Laboratory of minerals and mineralization, Guangzhou Institute of geochemistry, Chinese Academy of Sciences. The phase, morphology and surface physicochemical properties of the synthesized samples were tested by X-ray fluorescence spectrometer, electron microscope, zeta potential analyzer and other instruments; The synthetic goethite was used to simulate the adsorption of rare earth ions. The concentration of rare earth ions was measured by inductively coupled plasma emission spectrometer to characterize the adsorption capacity and adsorption behavior of rare earth ions on the surface of goethite; The surface complexation model software visual MINTEQ was used to fit the adsorption data and determine the intrinsic adsorption constants of rare earth ions. (3) In 2018, kaolinite and halloysite samples were obtained in Maoming, Guangdong Province and Linfen, Shanxi Province, respectively. The phase, morphology and surface physicochemical properties of the samples were tested by X-ray powder diffraction, scanning electron microscopy, zeta potentiometry and other instruments; The adsorption capacity and behavior of rare earth ions on kaolinite and halloysite were characterized by ICP-AES. (4) In November 2018, 32 weathering profile samples of metamorphic rocks were collected in the ion adsorption rare earth mining area of metamorphic weathering crust in Ningdu County, Ganzhou City, Jiangxi Province. After mechanical crushing, slicing, chemical sequential extraction and whole rock acid dissolution experiments, the samples were passed through the Key Laboratory of minerals and mineralization, Guangzhou Institute of geochemistry, Chinese Academy of Sciences, Aoshi analytical testing (Guangzhou) Co., Ltd. uses X-ray powder diffraction, X-ray fluorescence spectrometer, inductively coupled plasma mass spectrometry, METTLER TOLEDO five easy plus ™ The mineral composition, chemical composition, pH value of soil erosion, thin section identification and SEM image data of ion adsorption type rare earth ore profile of metamorphic rock weathering crust were produced by testing with pH meter, optical microscope and electron microscope; (5) In 2021, the survey of rare earth ore was carried out in Dongyuan County, Guangdong Province, and the sampling work of 17 sections was completed. 62 samples were collected and the ion phase extraction and chemical analysis of 62 samples were carried out; The test and analysis can provide a theoretical basis for the enrichment, migration and mineralization of rare earth elements in weathering eluvial rare earth deposits.
HUANG Jian, YANG Meijun, LI Xiaoju, HUANG Yufeng
Core samples (zk2407 / zk3204 / zk2403 / zk5604) were collected from Huayangchuan uranium and polymetallic mining area of Shaanxi Province in 2019 and 2020. After mechanical crushing, the rare earth content of the drilling samples in Huayangchuan mining area was tested by using ICAP Q inductively coupled plasma mass spectrometry. The sample was taken from the core of Huayangchuan mining area in Shaanxi Province. 0.1000g sample was weighed and put into a closed sample dissolver. 1ml hydrofluoric acid and 0.5ml nitric acid were added. The cylinder cap was covered and tightened. Keep it at 185 ℃ for 24h, take it out and cool it, evaporate it to dryness on the electric heating plate, add 0.5ml nitric acid to evaporate it to dryness and repeat once, add 5ml (1:1) nitric acid to heat and extract, transfer it into a 50ml volumetric flask, set it to the scale and shake well. ICP-MS was used for determination. The quality control is carried out according to the requirements of "quality management specification for geological and mineral laboratory testing" (dzg 0130-2006).
YANG Shuai
Core samples of borehole (zk2407) collected from Huayangchuan uranium and polymetallic mining area of Shaanxi Province in 2019 were made by inclusion thin section, and homogenization temperature of ore inclusion of borehole samples in Huayangchuan mining area was tested by Linkam ts1500 hot and cold platform through analysis and test research center of Beijing Institute of geology of nuclear industry. The samples were collected from calcite quartz veins in the core of borehole in Huayangchuan mining area, Shaanxi Province. The samples were made into inclusion slices, and then heated and cooled on the hot and cold platform to determine the homogenization temperature of inclusions. The instrument used in the experiment is Linkam ts1500 hot and cold table. The laboratory temperature is 25 ℃ and the humidity is 40%.
YANG Shuai
The data mainly come from typical iron rare earth formation and carbonate type rare earth deposits in China, such as Bayan Obo rare earth deposit in the north, Qinling orogenic belt in the middle, Mianning Dechang rare earth deposit belt in the southwest and Kangdian area. In situ U-Pb or U-Th-Pb dating, major and trace elements of whole rock, major and trace elements of minerals in situ, sr-nd-o-s isotopes and temperature measurement of fluid inclusions have been carried out for the rocks and ores in these deposits. The major elements of whole rock are mainly determined by XRF, trace elements of whole rock are mainly determined by ICP-MS, U-Pb and U-Th-Pb dating and in-situ trace elements of minerals are mainly obtained by LA-ICP-MS, major elements of minerals are mainly obtained by EPMA, and sr-nd-o-s isotopes of minerals are mainly obtained by tims, Sims and la-mc-icp-ms, The temperature measurement of fluid inclusions is mainly obtained by hot and cold stage and laser Raman spectroscopy. Based on these data, we mainly discuss: (1) the formation mechanism and deposit model of iron rare earth ore deposits（ 2) The shallow characterization of deep mineralization of Fe REE constructive REE deposits（ 3) Shallow characterization of deep mineralization of alkaline carbonatite type REE deposits（ 4) Metallogenic potential prediction of typical mineralization anomaly area.
CHEN Wei, YANG Kuifeng, XU Deru, LIU Yulong, ZHANG Wei, LIU Lei, MA Ronglin
Core samples of borehole (zk2407) collected from Huayangchuan uranium and polymetallic mining area of Shaanxi Province in 2019 were processed by inclusion thin section. The laser Raman analysis of mineral inclusions in borehole samples of Huayangchuan mining area was tested by labhr-vis labramhr800 research level micro laser Raman spectrometer through the analysis and test research center of Beijing Institute of Geology of nuclear industry. The samples were collected from calcite quartz veins in the core of borehole in Huayangchuan mining area, Shaanxi Province. The samples were made into inclusion slices and then determined by laser Raman spectroscopy. The instrument used in the experiment is labhr-vis labramhr800 research level micro laser Raman spectrometer. The laser wavelength used in the experiment is 532nm. The YAG crystal frequency doubled solid-state laser is used. The scanning range is 100 ~ 4200 (cm-1). The laboratory temperature is 25 ℃ and the humidity is 50%.
YANG Shuai
