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The Diamondiferous Behradih Kimberlite Pipe, Mainpur Kimberlite Field, Chhattisgarh, India: Reconnaissance Petrography and Geochemistry
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Drill core from the diamondiferous Behradih pipe consists of pelletal-textured and olivine macrocrystic diatreme facies kimberlite variably affected by talc-serpentine-carbonate alteration. Crustal xenoliths of resorbed feldspar, syenite, granite, and basalt are common. The rocks have C.I. ≥ 1.6, 40-43 wt% SiO2, <5 wt% Al2O3, and Mg numbers of 83-87. The trace element composition is typical of kimberlitic rocks and excludes a lamproitic affinity.
Keywords
Kimberlite, Petrography, Geochemistry, Behradih, Mainpur, Chhatisgarh.
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