Altered volcanic ash with highly-elevated concentrations of Nb (Ta), Zr (Hf), Ga, and rare
earth elements and yttrium (REY) is an untraditional type of critical metal deposit that has …

The Renli deposit is the largest known pegmatite-type Ta–Nb deposit in south China. Its rare-
metal pegmatites show regular zoning of pegmatite types and rare-metal mineralization …

The rare-metal granites of the Nubian Shield are commonly associated with Nb–Ta and Sn
mineralization. The magmatic and hydrothermal evolution of these granites and their relation …

Abstract The upper Permian Heshan Formation in **guo, Guangxi, China, is strongly
enriched in lithium (Li) and niobium (Nb). The lower bauxite layer contains 0.02–0.04 wt …

Niobium (Nb) is one of the most immobile elements during supergene weathering, widely
used for mass-balance calculations, despite elusive information on the mechanisms …

Elucidating the causal relationship between parent granite and pegmatite and tracing the
magmatic-hydrothermal evolution and rare metal mineralization are intriguing scientific …

Abstract The Tashisayi Li deposit was newly discovered in the eastern part of the Tashisayi
batholith, located in the Altyn Tagh region of Northwest China. A Li-rich composite pegmatite …

Abstract About 45% of tungsten,∼ 20% of tin, and∼ 9% of fluorite of known world reserves
are associated with Late Mesozoic igneous rocks, Southeast (SE) China. Here we …

Primary tin deposits usually contain little or no copper due to the distinct geochemistry of Sn
and Cu. However, examples of copper-rich tin deposits in many tin provinces around the …

Studies of indicator minerals and mineral chemistry are widely used in geochemistry and are
particularly useful in mineral exploration. Due to the low abundance of indicator mineral …