Mangaia, an ocean island in the Cook‐Austral volcanic chain, is the type locality for the HIMU mantle reservoir and has also been shown to exhibit evidence for recycled sulfur with anomalous δ³⁴S and Δ³³S that has been attributed an Archean origin. Here we report bulk S‐isotope data from sulfide inclusions in olivine and pyroxene phenocrysts from one of the previously analyzed and four additional Mangaia basalts to further test for the prevalence of anomalous S in the HIMU mantle source feeding Mangaia. We document compositions that range from −5.13‰ to +0.21‰ (±0.3 2σ), +0.006‰ to +0.049‰ (±0.016 2σ), −0.81‰ to +0.69‰ (±0.3 2σ) for δ³⁴S, Δ³³S, and Δ³⁶S, respectively. These data extend the range of measured compositions and suggest S‐isotope heterogeneity in the HIMU mantle source at Mangaia. We show that S‐isotope compositions of bulk sulfide in olivine is not in isotopic equilibrium with bulk sulfide in pyroxene from the same samples and that samples from a confined area (M4, M10, M12, and M13) in the northern central part of the island show a distinct covariation for δ³⁴S and Δ³³S. This isotopic variation (forming an array) suggests mixing of sulfur from two sources that were captured at different stages of crystallization by phenocrysts in the Mangaia HIMU sulfur endmember.

中文翻译：

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Mangaia地幔柱中多个循环利用硫储层的同位素证据

曼加伊亚，库克-奥斯特勒尔火山链的海洋岛，是用于HIMU地幔储类型局部性和也已显示表现出证据对回收硫具有反常δ ³⁴ S和Δ ³³ s表示已被归因太古代原点。在这里，我们报告了先前分析的其中之一和另外四个Mangaia玄武岩中橄榄石和辉石玄武岩中硫化物包裹体中的大量S同位素数据，以进一步测试HIMU地幔源中Mangaia的异常S的普遍性。我们的文件组合物，其范围从-5.13‰至+ 0.21‰（±0.32σ），+ 0.006‰至+ 0.049‰（±0.0162σ），-0.81‰至+ 0.69‰（±0.32σ）为δ ³⁴ S，Δ ³³ S，和Δ ³⁶S分别。这些数据扩展了被测成分的范围，并暗示了Mangaia HIMU地幔源中S同位素的异质性。我们显示，来自相同样品以及来自北部北部中部密闭区域（M4，M10，M12和M13）的样品中橄榄石中的大块硫化物的S同位素组成与辉石中的大块硫化物不处于同位素平衡状态。岛显示δ鲜明的共变³⁴ S和δ ³³从该物在结晶的不同阶段通过在曼加伊亚HIMU硫端元斑晶捕获的两个源S.这同位素变化（形成阵列）表明硫的混合。