云南玉河寨碱性镁铁-超镁铁质岩体磷灰石主微量元素与Sr-Nd同位素特征及其意义
Abstract
峨眉山大火成岩省发育一系列碱性镁铁-超镁铁质岩体,多呈岩株产出,伴生磁铁矿矿化和钪的富集。然而,当前对于这些岩体的岩石成因和金属富集机制尚不清楚。玉河寨岩体是峨眉山大火成岩省典型的碱性镁铁-超镁铁质岩体,具有同心环状结构,由内向外依次为磁铁辉石岩、斜长辉石岩和橄榄辉绿岩。本文对磁铁辉石岩中自形-半自形粗粒磷灰石开展一系列主量元素、微量元素和 Sr-Nd 同位素分析,结果显示这些磷灰石颗粒具有富 F(0.89%~3.08%)、贫 Cl(0.11%~0.51%)、贫 SO3(
Fields of Study & Subjects
Geological and Geochemical Analysis
Geochemistry and Geochronology of Asian Mineral Deposits
Geochemistry and Elemental Analysis
Publication details
- Journal / source
- Acta Petrologica Sinica
- Volume
- 42
- Issue
- 3
- Pages
- 867–878
- Publication date
- 1 January 2026
- Language
- EN