Various chlorite alteration styles in the Furong Sn deposit, South China: Chlorite chemistry and implication for tin mineralization DOI Creative Commons

Shaocong Chen,

Jinjie Yu,

Xin-Fu Zhao

et al.

Ore Geology Reviews, Journal Year: 2023, Volume and Issue: 162, P. 105680 - 105680

Published: Sept. 19, 2023

The altered granite- to skarn-type Furong tin deposit (530,000 t Sn @ 0.8% Sn) lies at the southern margin of multiphase Qitianling granite batholith, South China. Chlorite alteration is a distinct feature Furong, and four chlorite variants are identified: (i) partially or pseudomorphically replacing biotite in weakly chloritized granites (Chl-W), (ii) aggregates interlocking irregularly with quartz, cassiterite, magnetite intensely (tin ores) (Chl-I), (iii) comb-shaped quartz veins crosscutting (Chl-V), (iv) garnet, diopside, vesuvianite skarns (Chl-S). Compositionally, all samples belong trioctahedral Fe-chlorite (chamosite). Empirical geothermometry without Fe/(Fe+Mg) correction yielded formation temperatures 321–422℃ 397–420℃ for granoblastic Chl-I Chl-V, respectively, lower 273–343℃ 285–366℃ pervasive chloritization Chl-W Chl-S, respectively. result layer-by-layer replacement two layers being converted one layer, Chl-S formed by dissolution-transport-precipitation mechanism. Both rock-dominated fluid environment, their elemental compositions controlled dominantly precursor minerals temperature. In contrast, resulted from process fluid-dominated system, Chl-V precipitated directly fluid. During intense fluid-rock interaction, provided considerable Fe, Zn, form together cassiterite. Fluid flow was NNE-trending fault zones which were preferential sites mixing ascending metal-rich magmatic meteoric water interaction granites.

Language: Английский

Fluid evolution and metallogenic mechanism of the Xianghualing skarn-type Sn deposit, South China: Evidence from petrography, fluid inclusions and trace-element composition of cassiterite DOI Creative Commons
Yongkang Chen, Pei Ni,

Jun–Yi Pan

et al.

Ore Geology Reviews, Journal Year: 2023, Volume and Issue: 154, P. 105351 - 105351

Published: Feb. 15, 2023

The Xianghualing Sn-polymetallic deposit is a large skarn-type Sn located in the Nanling polymetallic metallogenic belt, South China. ore bodies are controlled by NE-trending faults and mainly hosted contact of Middle Devonian carbonate rock granite. divided into four mineralization stages, two stages identified. from early to late include stage I (prograde stage), II (retrograde III (cassiterite-magnetite-arsenopyrite-topaz-quartz IV (sphalerite-galena-pyrite-chalcopyrite-quartz-calcite stage). Stage initial where only minor cassiterite precipitates, main abundant precipitates. On this basis, fluid inclusion microthermometry Raman spectroscopy analyses were carried out for and/or gangue minerals at different stages. In addition, trace element composition analysis was also conducted on cassiterite. These data can contribute reveal properties, evolution formation mechanism deposit. Three types inclusions identified including halite-bearing multi-phase (Type B), liquid-rich two-phase L) vapor-rich V). Garnet (stage I) contains Type B V inclusions, with homogenization temperatures salinities 511–549 °C, 37.6–48.9 wt% NaCl equiv. 551–559 4.0–5.1 equiv., respectively. Topaz II) L 408–445 °C 9.5–12.4 Cassiterite III) 368–417 8.7–11.5 Quartz IV) 162–227 2.6–5.0 temperature salinity decreased significantly, recording intense meteoric water mixing. III, while changed little, indicating that, except mixing, cooling predominant. continued decrease, further mixing water. From basically consistent indicated elements (Nb, Ta, Ti) Fluid may be predominant occurred II. precipitation which accompanied redox reactions (II)-Cl complexes As (III) CO2 as potential oxidants, acid neutralization rocks. Combined composition, it that forming derived highly evolved granitic magma region, genesis typical deposits.

Language: Английский

Citations

17
In situ trace element compositions and U Pb ages of cassiterite from tin-polymetallic deposits in the Dachang district, Guangxi, China: Implications for ore genesis and exploration DOI
Jiali Cai, Wenchao Su,

Nengping Shen

et al.

Journal of Geochemical Exploration, Journal Year: 2023, Volume and Issue: 247, P. 107173 - 107173

Published: Feb. 7, 2023

Language: Английский

Citations

15
Genesis of the Yunlong Sn deposit in the Chongshan Shear Zone, Western Yunnan, SW China DOI
Zhen Jia,

Wenchang Li,

Jianze Sha

et al.

Journal of Geochemical Exploration, Journal Year: 2025, Volume and Issue: unknown, P. 107690 - 107690

Published: Jan. 1, 2025

Language: Английский

Citations

0
The emplacement model of the Qitianling pluton in southern Hunan, China: New insights from 3-D magnetotelluric imaging DOI Creative Commons
Keke Zhou,

Jianxin Liu,

Rongwen Guo

et al.

Ore Geology Reviews, Journal Year: 2025, Volume and Issue: unknown, P. 106511 - 106511

Published: Feb. 1, 2025

Language: Английский

Citations

0
Ore-forming process of the W–Sn and Cu skarn mineralization in the Huangshaping deposit (Nanling Range): Constraints from scheelite geochemistry and cassiterite U–Pb geochronology DOI Creative Commons

Jionghui Wang,

Lianjie Zhao,

Qiushi Li

et al.

Ore Geology Reviews, Journal Year: 2023, Volume and Issue: 155, P. 105354 - 105354

Published: Feb. 17, 2023

The Nanling Range in South China is endowed with abundant Jurassic W–Sn and Cu skarn deposits; however, the ore-forming age process of these deposits lack adequate comparative studies. Huangshaping deposit coincidently develops both mineralization systems, providing a good window to address issues. Multiple generations hydrothermal scheelite were identified at Huangshaping, including SchA-1, SchA-2, SchA-3 system, SchB-1, SchB-2, SchB-3 system. Scheelite two systems has similar textural evolution, presenting as regular oscillatory zoning (SchA-1, SchB-1), chaotic (SchA-2, SchB-2) truncating SchA-1 respectively, homogeneous texture (SchA-3, SchB-3) replacing early respective Rare earth elements (REEs) substitute into SchB-1 mainly via mechanism 3Ca2+ = 2(REEs, Y)3+ + □Ca, whereas those incorporate SchA-3, mechanisms Ca2+ W6+ (REEs, Nb5+ □Ca. Continuously decreasing Mo concentrations increasing Eu anomalies from reflect progressively oxygen fugacity (fO2) fluids systems. higher Sr system than that indicate stronger fluid-rock interaction consistent its more development skarn. Cassiterite U–Pb geochronology yielded lower intercept ages 159.1 ± 0.6 Ma (MSWD 1.8, N 38) 161.5 0.8 1.6, 25), respectively. Combined previously published data regional Range, it inferred may have formed earlier boundary ∼ 159 Ma. And might represent an important shifting time for Range. This study highlights geochemical evolution can provide constraints on different

Language: Английский

Citations

10
Global Sn Isotope Compositions of Cassiterite Identify the Magmatic–Hydrothermal Evolution of Tin Ore Systems DOI Creative Commons
Ryan Mathur, Wayne Powell, Junming Yao

et al.

Geosciences, Journal Year: 2025, Volume and Issue: 15(1), P. 28 - 28

Published: Jan. 15, 2025

Published Sn isotope data along with 150 new analyses of cassiterite and four granite constrain two major tin fractionation steps associated (1) separation from the magma/orthomagmatic transitional environment (2) hydrothermal activity. A distinct difference across deposit type, geological host rocks, time ore formation demonstrates that in mean δ124Sn value represents operation a unified process. The lower values present both residual igneous rocks pegmatite suggest heavier isotopes were extracted system during orthomagmatic fluid separation, likely by F ligands Sn. Rayleigh distillation models this first ligand-induced fractionation. subsequent development is characterized composition proximal to intrusion, which persists spite fractionating towards isotopically lighter evolution.

Language: Английский

Citations

0
Pyrite geochemical fingerprinting on skarn ore-forming processes: A case study from the Huangshaping W–Sn–Cu–Pb–Zn deposit in the Nanling Range, South China DOI

Lianjie Zhao,

Yongjun Shao, Yu Zhang

et al.

Journal of Geochemical Exploration, Journal Year: 2024, Volume and Issue: 262, P. 107474 - 107474

Published: April 6, 2024

Language: Английский

Citations

3
Cassiterite geochemistry and U–Pb geochronology of the Shihuiyao Rb–(Nb–Ta–Be–Sn) deposit, Northeast China: Implication for ore‑forming processes and mineral exploration DOI Creative Commons
Tianfu Zhang, Zengqian Hou, Xiaofei Pan

et al.

Ore Geology Reviews, Journal Year: 2023, Volume and Issue: 156, P. 105393 - 105393

Published: March 16, 2023

The Shihuiyao giant Rb deposit in association with Nb–Ta–Be–Sn occurs within the Southern Great Xing’an Range tin belt known for its Sn, W, Cu, Ag, and base-metal deposits. trace element compositions of four types cassiterites hosted granite, greisen, unidirectional solidification texture (UST) quartz layer, hydrothermal vein, respectively (abbreviated as Cst-I to Cst-IV) were measured by laser ablation inductively coupled plasma mass spectrometry electron probe microanalysis establish chemical criteria application cassiterite a useful geological tracer mineral. In situ U–Pb dating Cst-I, Cst-III, Cst-IV yielded Tera–Wasserburg intercept ages 150.3±5.2, 145.8±4.6, 146.9±3.5 Ma, respectively. These are consistent previously published monazite columbite 150.2–141.0 Ma ore-bearing granites, indicating genetic relationship between granite magmatism Ta–Nb–Sn mineralization. composition studied whole magmatic–hydrothermal evolution process yields some petrographic dissimilarities geochemical trends from xenothermal epithermal environments, which can be used fingerprint fluid deposit. For example, magmatic (Cst-I Cst-II) strongly enriched Ta yield low Nb/Ta ratios compared shallow veins. occurrence wodginite-group minerals highest W concentrations UST layers suggests that main enrichment is primarily controlled exsolution during transition stage. Additionally, generally lighter color characterized complex internal oscillatory zoning alternate dark (Cst-IVa) light (Cst-IVb) bands. Cst-IVa have similar Nb, contents but much higher Ti Cst-IIIb related primary fluid, whereas Cst-IVb exhibit sharply decreasing elevated contents, suggesting pulsed ore‑forming fluids involvement external distal open-fluid systems late mineralization Therefore, variations not only robust tracers pointing centers also effective discriminating source alluvial evaluating metallogenic potential natural heavy mineral survey, supporting use an indicator exploration targeting.

Language: Английский

Citations

7
Accurate determination of ultra-trace rare earth elements by LA-ICP-MS/MS and its application to cassiterite for effective elimination of Gd and Tb false positive anomalies DOI
Ming Yang, Wei Wu, Yue‐Heng Yang

et al.

Journal of Analytical Atomic Spectrometry, Journal Year: 2024, Volume and Issue: 39(12), P. 2992 - 2999

Published: Jan. 1, 2024

This study reports a new method for in situ determination of ultra-low REE contents cassiterite by LA-ICP-MS/MS with an O 2 and mass-shift detection strategy to avoid Gd Tb anomalies.

Language: Английский

Citations

2
Zircon and cassiterite U-Pb dating identifies the first Early Cretaceous Sn deposit in Fujian: Implication for tin mineralization potential in the southeastern coastal belt of South China DOI Creative Commons
Yan Gao, Pei Ni,

Jun–Yi Pan

et al.

Ore Geology Reviews, Journal Year: 2023, Volume and Issue: 164, P. 105854 - 105854

Published: Dec. 30, 2023

The Xiayi Sn deposit, located in the Sanming city, southeast China, is largest deposit Fujian province. mineralization mainly consists of cassiterite-bearing veinlets and stockworks, it spatially associated with granodiorite porphyry. Despite its economic significance, few studies have been carried out, age remains unknown. In this paper, we present first geochronological data on cassiterite porphyry, Hf isotope zircon, trace element compositions from deposit. These give precise constrain relationship granitic intrusion. Zircon U-Pb dating ore-related porphyry yielded 138.3 ± 1.8 Ma, which agreed well 136.5 1.4 documenting genetic link between magmatism. εHf(t) ranged −4.5 to −1.8 a weighted mean −3.4 model ages (TDM2) vary 1.31 1.47 Ga value 1.40 Ga. indicate that originates partial melting crustal materials Mesoproterozoic basement show addition mantle-derived materials, similar typical mineralized granite southeastern coastal tin belt Nanling tungsten-tin belt. Besides, clear CL-bright CL-dark sector zonation cathodoluminescence images. LA-ICP-MS analyses cassiterites high Ti Fe but low Nb Ta contents both zones, while W content significantly zone zone. Cassiterite together pattern alteration assemblages results provide proof extension metallogenic offer potential breakthroughs exploration southwestern Province.

Language: Английский

Citations

6