Geochemical Analysis of Molybdenite Mineralization

Geochemical analysis of molybdenite (MoS₂) mineralization integrates mineral chemistry, isotopic dating and fluid inclusion studies to elucidate ore-forming processes and metal transport pathways. By mapping trace elements such as rhenium, selenium and tellurium within MoS₂ lattices, researchers reconstruct the temperature, redox state and fluid compositions of hydrothermal systems. Advanced tools—electron microprobe, laser ablation inductively coupled plasma–mass spectrometry and synchrotron X-ray fluorescence—reveal intra-grain heterogeneity and nanoparticle inclusions that influence Re–Os isotope distributions. Combined with fluid inclusion thermometry and cathodoluminescence imaging of quartz, these data constrain the evolution of magmatic and meteoric fluids responsible for porphyry, skarn and epithermal deposits. The outcomes inform both geochronology and exploration strategies, underpinning sustainable resource development worldwide.

Research from Nature Portfolio

Recent studies have demonstrated that rhenium and osmium isotopes in molybdenite are structurally bound and often occur as nanoparticulate phases, leading to intra-grain heterogeneity. High-resolution electron microprobe and nano-secondary ion mass spectrometry mapping revealed that ¹⁸⁷Re and its daughter ¹⁸⁷Os are not systematically decoupled, challenging previous assumptions about isotope nuggeting. This finding refines the interpretation of Re–Os ages and underscores the need for careful microbeam selection. The work opens new avenues for assessing the reliability of Re–Os molybdenite geochronology and supports more accurate age constraints on mineralization events.

Geochemical Analysis of Molybdenite Mineralization publication trend

The graph below shows the total number of articles in geochemical analysis of molybdenite mineralization across all publications each year (not limited to Nature Index journals).

Technical terms

Molybdenite: A layered molybdenum sulfide mineral (MoS₂) and the principal ore mineral of molybdenum, often hosting trace metals.

Re–Os geochronology: A radiometric dating method using the decay of ¹⁸⁷Re to ¹⁸⁷Os to determine the age of sulfide mineral formation.

Laser ablation ICP-MS/MS: An analytical technique combining laser sampling with inductively coupled plasma tandem mass spectrometry for in situ trace element and isotope analysis.

Fluid inclusions: Microscopic pockets of trapped fluid in minerals, analysed to infer temperature, pressure and composition of ore-forming fluids.

Cathodoluminescence imaging: A microscopy method that uses electron-induced luminescence in minerals to reveal growth zoning and alteration features.

Trace elements: Minor constituents in minerals (e.g., Re, Te, Se) used to characterise fluid sources and redox conditions in hydrothermal systems.

References

1. Insights into fluid evolution and Re enrichment by mineral micro-analysis and fluid inclusion constraints: Evidence from the Maronia Cu-Mo ± Re ± Au porphyry system in NE Greece. Mineralium Deposita (2024).
2. Dissecting the Re-Os molybdenite geochronometer. Scientific Reports (2017).
3. Trace Element Composition of Molybdenite: Deposit Type Discrimination and Limitations. Minerals (2023).
4. Molybdenite Reference Materials for In Situ LA‐ICP‐MS/MS Re‐Os Geochronology. Geostandards and Geoanalytical Research (2024).
5. Extreme-resolution synchrotron X-Ray fluorescence mapping of ore samples. Ore Geology Reviews (2022).