Three generations of garnets are distinguished in the Yamansu volcanic-hosted skarn iron deposit in NW China, and their detailed textures and geochemical characteristics are presented to reveal the mechanisms controlling the distribution of trace elements in the garnets and to discuss the physicochemical conditions and evolution of the ore-forming fluid.
The skarn specimens of Xiaotongguanshan are brown with garnet as the main minerals. Some are almost completely made up of garnet megacrysts. Some garnet grains are surrounded by calcite or directly contacted with epidote. These petrology characteristics suggest that the Xiaotongguanshan skarns are from endoskarn zone.
Oscillatory zoned garnets are widespread in the Haobugao skarn‐type copper–lead–zinc–iron polymetallic deposit, and they can record garnet growing process in the early stages of metallogenesis. In order to investigate the skarn‐forming process and hydrothermal fluid evolution of the Haobugao deposit, major, trace, and rare earth element …
Here, we investigate the petrologic, spectroscopic, and geochemical characteristics of garnet from the Nanminghe skarn iron deposit in China to elucidate the formation process, growth environment, and genesis.
Request PDF | In situ LA-ICP-MS study of garnets in the Makeng Fe skarn deposit, eastern China: Fluctuating fluid flow, ore-forming conditions and implication for mineral exploration | Most ...
Minerals in the garnet group—which are found in the upper mantle, at different metamorphic temperatures, and in skarn deposits—are preferred for geochronological studies because they have high HREE contents [1,2,3,4,5,6,7,8,9,10,11,12,13,14].Garnets growing under different physicochemical conditions show oscillatory chemical zoning in gross–andradite and …
Request PDF | Textural and geochemical characteristics of garnet from the Luoyang Fe skarn deposit, eastern China: implications for ore-forming fluid evolution and mineralization conditions | The ...
In this study, a skarn iron deposit from northwest (NW) China is shown to have U-Pb garnet and U-Pb zircon ages of 254.2 ± 1.7 Ma and 255.5 ± 1.0 Ma, respectively, which are both significantly ...
Garnet is an important metasomatic mineral in iron oxide-copper–gold (IOCG) ore systems, but its crystallization mechanisms and relationship to fluid evolution in IOCG are …
Therefore, we spatially selected garnet skarn in the middle of the iron ore body. In this experiment, 34 spots were analyzed from sample KD-20-34 (Grt-III). The composition of 34 ablated spots varies from 1.26-13.53 ppm U ... SE China. Minerals, 7 (10) (2017), p. 199. View PDF View article Google Scholar.
Garnet: Garnet is a common metamorphic mineral that can form under a wide range of conditions.It is often found in metamorphic rocks such as schists and gneisses, and can contain valuable ore minerals such as gold, silver, and copper as inclusions or replacements.; Staurolite: Staurolite is a metamorphic mineral that forms in medium to high-grade …
Titanite and garnet from skarn in the ore field are newly U–Pb dated to be ca. 482.6–481.0 Ma, consistent with the intrusive age of the granite but later than the formation age of the host ...
Trace element concentrations in garnet and associated minerals from the mid-Miocene Zhibula Cu skarn, Gangdese Belt, Tibet reflect a diversity of local environments, …
The studied garnet sands from different mines in Australia, India and the U.S., and industrial garnet sands commercially available in Germany from different suppliers show average Sc ...
The Sangdong and Weondong deposits, Taebaeksan mineral district, South Korea, are tungsten skarn ore deposits. Andradite (Fe-rich) garnet is a characteristic mineral in these skarn deposits, and is characterized by notable trace element contents (W, Mo, Sn, and U) compared to grossular (Al-rich) garnet. We report characteristics of the trace elements …
In this study of the Beiya deposit, we use garnet mineralogy and geochemistry to delineate three skarn alteration zones (i.e., contact, proximal and distal skarn). We investigate the possible controls on the rare earth element (REE) incorporation into skarn-type garnet, the ore-fluid evolution, and metasomatic dynamics.
The Awulale Iron Metallogenic Belt (AIMB) located in Central Tianshan is a significant iron ore belt in China. The Beizhan area exhibits extensive volcanic and intrusive rocks that formed during or close to the iron mineralization period. The iron ores in Beizhan are found in Early Carboniferous rhyolite and dacite tuff. The rhyolite is enriched in LILEs and …
The Handan–Xingtai region in the southern Taihang Mountains in central North China Craton hosts several skarn‐type iron deposits. Here we investigate an ore‐forming intrusion associated with a typical iron skarn deposit to explore the magmatic evolution from mineral zoning textures, and to constrain the ore genesis.
In this paper, the authors provide very good and complete information about the distribution trend of antimony in the garnet mineral from Nanminghe skarn iron deposit, China and use it as an effective geochemical parameter in determining the genesis of iron ore. ... "Anatomy of Garnet from the Nanminghe Skarn Iron Deposit, China: Implications ...
The trace element analysis of garnet was performed using an Agilent 7900 Quadrupole ICP–MS coupled to a Photon Machines Analyte HE 193-nm ArF Excimer Laser Ablation system at the Mineral Geochemistry Laboratory, Ore Deposit and Exploration Centre (ODEC), Hefei University of Technology, China.
The Changpo–Tongkeng tin polymetallic deposit in Dachang, Guangxi, is a world-class, superlarge, polymetallic tin deposit consisting of lower skarn zinc–copper ore bodies and upper tin polymetallic ore bodies. Garnet is the main gangue mineral in the skarn zinc–copper ore bodies and has a granular texture. Based on hand specimens and microscopic …
Sample HG12-19 is made of giant-grained black garnet (Figure 4d), sample HG12-28 cut across the earlier iron–tin ore body as veins (Figure 4e), consisting of red garnet and clinopyroxene surrounded by fluorite and calcite …
2.2.1 Occurrence. Rare earth minerals occur as fluorites, oxides, tantalates, carbonates, phosphates, sulfates, borates, silicates, etc. (Qi 2018).List of different rare earth minerals are presented in Table 2.3.The average concentration of REEs in the earth's crust is found to be 150–220 ppm, which is much higher than the concentration of other base metals …
The Makeng deposit with 430 Mt iron ore is one of the largest Fe skarn deposits in China, and combined with several other smaller Fe deposits, including Luoyang and …
A number of iron ore deposits and occurrences are distributed along the southeastern China coast, and they constitute an important Fe metallogenic belt in South China. However, the genesis of this belt remains poorly understood. Here, we present in situ U–Pb laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS) ages of garnet from …
Over a hundred iron ore occurrences have been discovered in the Chinese Altay Orogenic Belt (AOB), which is a key Fe-ore belt in NW China. In the Jia'erbasidao ore district, Fe skarn mineralization was mainly developed along the contact zone between biotite granite and the marble of Altay Formation, which is different from most Fe mineralization (non-skarn contact …
Detailed description, properties, and locality information guide about the garnet mineral spessartine (spessartite). ... but new abundant finds in Tanzania, China, and Pakistan have really put Spessartine on the map, making it very well regarded. ... The manganese is often replaced by some magnesium and iron. Variable Formula (Mn,Mg,Fe) 3 Al 2 ...
3. Deposit geology3.1. Stratum. The strata exposed in the Yueshan ore field are the Lower Triassic Nanlinghu Formation (T 1 n), Middle Triassic Yueshan Formation (T 2 y), and Tongtoujian Formation (T 2 t) (Zhou et al., 2007).The Nanlinghu Formation is exposed on the south side of the Yueshan intrusion (Fig. 2 b).It is formed of neritic carbonate rocks, the …
Description and properties of common iron ore minerals. ... Spain, Russia, and China. Chamosite (Fe2(Mg,Fe)5Al)(AlSi3O10)(OH)8: Chamosite is a greenish iron-magnesium silicate mineral that is often associated with iron ore deposits, particularly in sedimentary rocks. It occurs in various countries, including France, the United States, and ...
Together with a conspicuous trace ore mineral signature, garnet compositions at Zhibula support a genetic connection and sharing of ore-forming fluids between the skarn and the Qulong porphyry Cu ... Iron, Ga, Sr and Ba are ... (IRT14R54), China Geological Survey (1212011220927, 12120114039701), and Specialized Research Fund for the Doctoral ...
The predominant types of high-grade iron deposits in China include skarn, sedimentary metamorphic (banded iron-formation, BIF-type), continental/submarine volcanic-hosted and magmatic Fe-Ti-V oxide deposits. Based on a comprehensive review of current studies on these deposits, this paper suggests that the oxygen concentration in atmosphere …
Semantic Scholar extracted view of "Skarn formation and trace elements in garnet and associated minerals from Zhibula copper deposit, Gangdese Belt, southern Tibet" by Jing Xu et al. ... Tongling ore district, Anhui Province, Eastern China. Xinjian Xiao Taofa Zhou +4 authors Xue-feng Chen. ... Hillside iron oxide–copper–gold deposit, Yorke ...
