Rare earth elements in the iron-oxide apatite (IOA) deposit: insights from apatite ...

• Main Authors: Yan, Shengchao, Liu, Wei
• Format: Text
• Language: unknown
• Published: Taylor & Francis 2022
• Subjects: Biophysics; Genetics; FOS Biological sciences; Physiology; Pharmacology; Biotechnology; Evolutionary Biology; Environmental Sciences not elsewhere classified; Chemical Sciences not elsewhere classified; Ecology; Sociology; FOS Sociology; Hematology; Kiruna
• Online Access: https://dx.doi.org/10.6084/m9.figshare.19126191; https://tandf.figshare.com/articles/journal_contribution/Rare_earth_elements_in_the_iron-oxide_apatite_IOA_deposit_insights_from_apatite/19126191

Kiruna-type or IOA deposits are characterized by magnetite-apatite-actinolite associations and may contain considerable amounts of rare earth elements (REEs) that can be exploited as by-products. REEs in the Kiruna-type deposit, heterogeneously distributed, are mainly hosted in phosphates (e.g. apatite). Published data of apatite, together with other evidence, can be used to decipher the source, enrichment mechanism, and post-ore modification of REEs in the Kiruna-type deposits. Sr isotopes and melt inclusions compositions of apatite, together with other evidence, support a mantle + evaporite affinity for the ore-forming materials of many IOA deposits. Ore-forming materials of different IOA deposits may originate from primitive, depleted, or enriched mantle sources respectively. This suggests that magmatic-hydrothermal evolutions, rather than REE-enriched mantle source, are probably more important for REE enrichment in Kiruna-type deposits. Increasing evidence supports an ortho-magmatic origin of IOA ...