Kaapvaal lamproite melts (aka orangeites): A new type of alkali-carbonate liquid? insights from olivine-hosted multiphase inclusions (Silvery Home, South Africa)

Abstract

Kaapvaal lamproites (aka orangeites) are a group of volatile-rich (H₂O, CO₂), micaceous, ultrapotassic igneous rocks that are unique to the Kaapvaal craton in southern Africa. However, the composition of the melts that give rise to these rocks remains poorly understood due to overprinting effects of contamination by mantle and crustal material, volatile exsolution, fractional crystallisation and post-magmatic alteration. Consequently, this lack of reliable data on the initial composition of the Kaapvaal lamproite melts hampers our understanding of their source, petrogenesis and ascent mechanisms.

Keywords

Lamproite / Kaapvaal / Multiphase inclusions / Olivine / Orangeite

CRediT authorship contribution statement

Ugur Korkut Pata: Writing – review & editing, Writing – original draft, Visualization, Resources, Methodology, Investigation, Formal analysis, Data curation.

Declaration of competing interest

The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.

Sole author of this article, Ugur Korkut Pata, was an Associate Editor of Geoscience Frontiers. He was not involved in the handling and decision making of this paper.

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