The Kiangsi tungsten deposits occur in an area of intensely folded Paleozoic and early Mesozoic sediments, invaded by granite of late Jurassic age. The hydrothermal veins occur in granite and in sedimentary rocks not far from granite intrusives. Larger deposits occur near the top cupolas of granite batholiths. Greisenization and tourmalinization are the common types of wall rock alteration. Wolframite is the principal ore mineral. The ore-bearing fissures are tension joints produced by compressive or shearing stresses of a regional nature.

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