Sign in to use this feature.

Years

Between: -

Subjects

remove_circle_outline
remove_circle_outline

Journals

Article Types

Countries / Regions

Search Results (1)

Search Parameters:
Keywords = Xiahenan area

Order results
Result details
Results per page
Select all
Export citation of selected articles as:
17 pages, 5669 KB  
Article
Mineralogical Characterization and Provenance of Black Sand in the Xiahenan Area, Tarim Large Igneous Province
by Songqiu Zhang, Renyu Zeng, Shigang Duan, Jiayong Pan, Dong Liang, Jie Yan, Jianjun Wan, Qing Liu and You Zhang
Minerals 2025, 15(8), 884; https://doi.org/10.3390/min15080884 - 21 Aug 2025
Viewed by 645
Abstract
The Tarim Large Igneous Province (TLIP) in NW China hosts abundant Fe–Ti–V oxide deposits associated with mafic–ultramafic intrusions. In the Xiahenan area, on the western margin of the TLIP, a distinct magnetic anomaly is linked to widespread surface accumulations of black sand. However, [...] Read more.
The Tarim Large Igneous Province (TLIP) in NW China hosts abundant Fe–Ti–V oxide deposits associated with mafic–ultramafic intrusions. In the Xiahenan area, on the western margin of the TLIP, a distinct magnetic anomaly is linked to widespread surface accumulations of black sand. However, the genesis and origin of these black sand grains remain unclear. Based on mineral assemblages, this study classifies the grains of the black sand into three types: (i) plagioclase (An10–90)–ilmenite–olivine–magnetite assemblage (Sand I), (ii) plagioclase (An0–10)-fine-grained magnetite assemblage (Sand II), and (iii) hornblende–magnetite highly complex assemblage (Sand III). Mineral geochemical studies demonstrate that magnetite in Sand I and Sand II is of magmatic origin, with protolith being basaltic magma. Magnetite in Sand III was eroded from veins formed by hydrothermal processes at 300–500 °C. Ilmenite in Sand I contains a high FeTiO3 component, representing basaltic ilmenite. Olivine in Sand I has a low Fo content (43.86–47.27), belonging to hortonolite olivine. Research indicates that Sand I and Sand II share similar mineral assemblages and mineral geochemical characteristics with basalts in the Xiahenan area, suggesting they are weathering products of Xiahenan basalts or their cognate magmas. In contrast, the veined magnetite of Sand III formed during post-magmatic hydrothermal events. Full article
(This article belongs to the Special Issue Mineralization and Metallogeny of Iron Deposits)
Show Figures

Figure 1

Back to TopTop