Controls on apatite composition by recharge melts in alkaline crystal mushes: Insights from the Pariquera-Açu Suite (SE Brazil)
Abstract:
We present major and trace element data (including element mapping) as well as Sr isotopic compositions of apatite crystals from the Pariquera-Açu Suite (Lower Cretaceous). This suite displays significant textural and chemical variability, along with macroscopic evidence of magma mixing, including felsic enclaves and clots within inequigranular malignite, and makes an ideal target for studying the crystallization behavior of apatite in an open-system environment. Additionally, we provide lithogeochemical data and whole-rock 87Sr/86Sr ratios for the apatite host rocks. Apatite crystals in 90-µm polished thin sections were analyzed by EMP, LA-ICP-MS, and LA-MC-ICP-MS. Prior to analysis, petrographic investigations using optical and scanning electron microscopy were conducted to identify key features that were the focus of the microanalysis
How to cite this dataset:
Cetina, L. M., Azzone, R. G., Ubide, T., Dias, V. G., Jegal, Y., 2026. Controls on apatite composition by recharge melts in alkaline crystal mushes: Insights from the Pariquera-Açu Suite (SE Brazil), Version 1.0. Interdisciplinary Earth Data Alliance (IEDA).
https://doi.org/10.60520/IEDA/114206. Accessed 2025-11-03.
DOI Creation Date:
2025-10-30
License:
Creative Commons Attribution 4.0 International [CC-BY-4.0]
Funding source(s):
Fundação de Amparo à Pesquisa do Estado de São Paulo: FAPESP, grants 2019/22084-8 and 2023/11675-0
Fundação de Amparo à Pesquisa do Estado de São Paulo: FAPESP=, scholarship support
Brazilian National Research Council: CNPq), grants 404020/2021-6, 304148/2017-
Australian Research Council, ARC FT230100230
Keyword(s):
Coverage Scope: Regional (Continents, Oceans)
Geographic Location: South American Platform
User Contributed Keyword(s):
Apatite chemistry, crystal mush, magma recharge, interstitial melt, crustal contamination, liquid immiscibility
Bounding Coordinates:
North: -24.725 South: -24.7417 East: -47.8167 West: -47.8333
Data Available On:
2026-10-31