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Our studies show that the granite bodies (γ_5~(2-1) and γ_5~3) which constitute the Huangsha-Tieshanlongcomposite granitic intrusion in jiungxi are characterized by their similarities in mineral assemblage,petrochemistry, trace element and REE distribution pattern. The values of ∑REE, ∑LREE, ∑HREE,∑Ce/∑Y, δEu and La/Yb apparently decrease from γ_5~(2-1s) to γ_5~(2-1b), γ_5~(2-1c) and γ_5~3. It is shown that the earlyYenshanian W(Ta, Nb)-bearing granite (γ_5~(2-1)) and late Yenshanian Ta, Nb-bearing granite (γ_3~5) may havebeen derived from the differentiation and evolution of granitic magmas due to repeated remelting of the crustand their earlier and later intrusion. Although the earlier (γ_5~(2-1b)) and later (γ_5~3) albitized Ta, Nb-bearinggranites show some obvious differences in REE content, their δEu values and La/Yb ratios are similar to eachother. Therefore, it may be concluded that the early and late Ta, Nb-bearing granites were derived from acongenetic magma.
Our studies show that the granite bodies (γ_5 ~ (2-1) and γ_5 ~ 3) which constitute the Huangsha-Tieshanlongcomposite granitic intrusion in jiungxi are characterized by their similarities in mineral assemblage, petrochemistry, trace element and REE distribution pattern. The values of ΣREE, ΣLREE, ΣHREE, ΣCe / ΣY, δEu and La / Yb apparently decrease from γ_5 ~ (2-1s) to γ_5 ~ (2-1b), γ_5 ~ (2-1c) and γ_5 ~ 3. It is shown that the early Yenshanian W (Ta, Nb) -bearing granite (γ_5 ~ (2-1)) and late Yenshanian Ta, Nb-bearing granite (γ_3 ~ 5) may havebeen derived from the differentiation and evolution of granitic Although the earlier (γ_5 ~ (2-1b)) and later (γ_5 ~ 3) albitized Ta, Nb-bearinggranites show some obvious differences in REE content, their δEu values and La / Yb ratios are similar to eachother. Thus, it may be concluded that the early and late Ta, Nb-bearing granites were derived from acongenetic ma gma.