Compositional variations of magnetite in different sulfide ore types in the Jinchuan Ni-Cu-PGE sulfide deposit, NW China: Insights into the mineralizing processes of conduit-type systems

Wang, Yuhua; Lai, Jin; Cao, Yonghua; Brzozowski, Matthew J.

doi:10.1016/j.chemgeo.2023.121679

Chemical Geology

2023

DOI: 10.1016/j.chemgeo.2023.121679

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Compositional variations of magnetite in different sulfide ore types in the Jinchuan Ni-Cu-PGE sulfide deposit, NW China: Insights into the mineralizing processes of conduit-type systems

Yuhua Wang

Jin Lai

Yonghua Cao

et al.

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Cited by 4 publications

References 72 publications

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Sulfide and Fe-Ti-P liquid immiscibility in the Ni-Cu-Co ovoid deposit of the Voisey’s Bay complex, Labrador, Canada

Caruso,

Vaillant,

Barnes

et al. 2024

Miner Deposita

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In the Voisey’s Bay complex, sulfide-matrix breccias developed through the percolation of dense sulfide melt, leading to the displacement of the silicate melt within partially molten silicate-matrix breccias. In these sulfide matrix-breccias, hydrous silicate rims are commonly present at the interface between the sulfide matrix and the silicate framework. Multiple lines of evidence support a magmatic origin of these hornblende-biotite rims, which was largely coeval with the emplacement of the sulfide melt in the magmatic breccias. The formation of the hornblende-biotite rims required the addition of alkalis and water that could not have entirely been sourced from either the sulfide melt or the silicate framework. Through the integration of compositional maps with major and trace element analyses of the main accessory minerals, we propose that the critical components required for the development of the hydrous silicate rims in sulfide-matrix breccias originated from an immiscible Fe-Ti-P melt. Distinct textural and compositional features of apatite, hercynite, ilmenite and magnetite support the presence of small amounts of Fe-Ti-P melt in the sulfide melt. This Fe-Ti-P melt likely formed through melt immiscibility in the early stages of the development of the Voisey’s Bay complex, and was transported in the magma conduits together with the sulfide melt.

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Sulfide and Fe-Ti-P liquid immiscibility in the Ni-Cu-Co ovoid deposit of the Voisey’s Bay complex, Labrador, Canada

Caruso,

Vaillant,

Barnes

et al. 2024

Miner Deposita

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show abstract

Controls on the metal tenors of sulfide ores in the Jinchuan Ni–Cu–PGE sulfide deposit, NW China: Implications for the formation of distinct textural types of sulfide ores in magma conduits

Wang,

Lai,

Cao

et al. 2023

Ore Geology Reviews

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Discrimination of deposit types using magnetite geochemistry based on machine learning

Wang,

Su,

Wang

et al. 2024

Ore Geology Reviews

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Compositional variations of magnetite in different sulfide ore types in the Jinchuan Ni-Cu-PGE sulfide deposit, NW China: Insights into the mineralizing processes of conduit-type systems

Cited by 4 publications

References 72 publications

Sulfide and Fe-Ti-P liquid immiscibility in the Ni-Cu-Co ovoid deposit of the Voisey’s Bay complex, Labrador, Canada

Sulfide and Fe-Ti-P liquid immiscibility in the Ni-Cu-Co ovoid deposit of the Voisey’s Bay complex, Labrador, Canada

Controls on the metal tenors of sulfide ores in the Jinchuan Ni–Cu–PGE sulfide deposit, NW China: Implications for the formation of distinct textural types of sulfide ores in magma conduits

Discrimination of deposit types using magnetite geochemistry based on machine learning

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