ABSTRACT This study reports, for the first time, the presence of vanadium-bearing epidote and Ti-rich chlorite associated with V-Ti magnetite in metagabbros of the Nandgaon Group, Shurtoli-Kanholi area, Bastar Craton, Central India. Petrographic and Scanning Electron Microscopic (SEM) analyses reveal a complex mineral assemblage including V-Ti magnetite, ilmenite, hematite, goethite, pyrite, chalcopyrite, clinopyroxene, epidote, and chlorite. Magnetite-ilmenite pairs commonly exhibit exsolution textures, whereas epidote and chlorite typically occur as fracture filling phases within magnetite. The V-Ti magnetite and accompanying cumulus Clinopyroxene (Cpx) formed by fractional crystallization of a Fe-V-Ti-rich parental magma. Later, low-temperature hydrothermal fluids migrated along fractures, forming V-epidote (clinozoisite) due to reduction and a change in the oxidation state of vanadium. Electron Microprobe (EPMA) analyses indicate epidote contains elevated V2O3, ranging from 1.07–6.59 wt%, while chlorite records TiO2 contents of up to 2.82 wt%. The epidote, identified as V-clinozoisite (mukhinite), formed through late-stage hydrothermal fluid activity, and its composition offers important insights into redox and fluid conditions. Chlorite geothermometry suggests formation temperatures of 200–300 °C, consistent with hydrothermal metasomatic processes in a fluid-enriched environment. These findings demonstrate that V-epidote serves as a valuable geochemical tracer of hydrothermal systems and offers a framework for recognising critical metal enrichment processes in similar ore systems regionally within the Bastar Craton and other comparable geological settings.
Kheole et al. (Mon,) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: