Critical metal enrichment in atypical hydrogenetic ferromanganese nodules: A case study in the Central Basin Ridge of the West Philippine Basin

Ren, Jiangbo; Yao, Huiqiang; Yang, Yong; Wang, Lixing; He, Guojian; Lai, Peixin; Zhou, Jiao; Deng, Xiaoyun; Liu, Shijia; Deng, Xianze; Jiang, Yuhan

doi:10.1016/j.chemgeo.2022.121224

Cited by 18 publications

(1 citation statement)

References 84 publications

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“…Wu et al (2019) [26] conducted a comprehensive study on the ophiolitic diamonds from the Skenderbeu chromitites. Because Mn-nodules and sediments (also containing Co and Ni elements) have been recognized at the ocean bottom [60], where they may have been carried deep into the mantle along with ancient subduction. Mn-Ni-Co-bearing materials start to melt under the mantle condition and can also dissolve large amounts of carbon derived from a subducted slab [61][62][63][64][65].…”

Section: Significance Of the Diamond Discovered In The Skenderbeu Har...mentioning

confidence: 99%

Diamonds Discovered in the Forearc Harzburgites Hint at the Deep Mantle Source of the Skenderbeu Massif, Western Mirdita Ophiolite

Wu,

Yang,

Yang

et al. 2023

Minerals

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The ultra-deep genesis of ophiolitic peridotite has reshaped our perception of the genesis of the oceanic mantle. Although ultra-high pressure (UHP) mineral assemblages have been unearthed in dozens of ophiolites in different orogenic belts around the world, the vast majority of them have been limited to podiform chromitites formed in suprasubduction zone (SSZ) settings, leaving uncertainty about whether such UHP minerals are intrinsic to the oceanic mantle or influenced by a specific mantle rock type. Here, we report on the occurrence of diamonds recovered from the harzburgites within the Skenderbeu massif, Mirdita ophiolite. The whole-rock, mineralogical major and trace element compositions, and redox states of the harzburgites align with modern abyssal harzburgites. Trace element modeling of clinopyroxene indicates that harzburgites have endured varying degrees of garnet-facies melting (~2%–5%) before progressing to spinel-facies melting (~10%–12%). Mineralogical characteristics further support that the Skenderbeu harzburgites underwent late-period MORB-like melt metasomatism in a forearc spreading center. An unusual mineral assemblage of diamonds has been separated from the studied harzburgites. The first occurrence of ophiolite-hosted diamonds discovered in the forearc harzburgites, together with previous similar discoveries in the SSZ ophiolitic chromitites, suggest that the ophiolite-hosted diamonds are not specific to certain mantle rocks.

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Section: Significance Of the Diamond Discovered In The Skenderbeu Har...mentioning

confidence: 99%

Diamonds Discovered in the Forearc Harzburgites Hint at the Deep Mantle Source of the Skenderbeu Massif, Western Mirdita Ophiolite

Wu,

Yang,

Yang

et al. 2023

Minerals

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Chronology and critical metals enrichment mechanism of ferromanganese nodules from the Parece Vela Basin, Philippine Sea

Cheng

Liang

et al. 2023

Chemical Geology

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Fluid-related manganese deposits at the incoming plate of the Southern Mariana subduction zone

Xu,

Peng,

et al. 2024

Chemical Geology

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Critical metal enrichment in atypical hydrogenetic ferromanganese nodules: A case study in the Central Basin Ridge of the West Philippine Basin

Cited by 18 publications

References 84 publications

Diamonds Discovered in the Forearc Harzburgites Hint at the Deep Mantle Source of the Skenderbeu Massif, Western Mirdita Ophiolite

Diamonds Discovered in the Forearc Harzburgites Hint at the Deep Mantle Source of the Skenderbeu Massif, Western Mirdita Ophiolite

Chronology and critical metals enrichment mechanism of ferromanganese nodules from the Parece Vela Basin, Philippine Sea

Fluid-related manganese deposits at the incoming plate of the Southern Mariana subduction zone

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