RUSSIAN JOURNAL OF EARTH SCIENCES, VOL. 20, ES3006, doi:10.2205/2020ES000666, 2020

Figure 4. Photomicrographs of 5119: (a) and (b) Olivine macrocrysts displaying reaction rims. (c) A xenolith of shale. (Sh) within kimberlite matrix. (c) Sharp contact of kimberlite and carbonatite. Note calcite vein intruding to kimberlite. (a) Magmatic crystalline texture of carbonatite. (b) Poikilitic growth of phlogopite phenocrysts associated with carbonatite phase. (d) Dolomite xenoliths with calcified peripheries. Macrocrystic olivine pseudomorphs with calcite reaction rims. Abbreviations: C – carbonatite, D – dolomite, K – kimberlite, Ol – olivine, Ph – phlogopite, R – reaction rim.

 
Citation: Phani P. Ramesh Chandra, Prabir Sengupta, Sudeshna Basu (2020), Geochemistry and petrology of two kimberlites at Krishtipadu from Gooty cluster, Andhra Pradesh, southern India – evidence of kimberlite magmatism and a possible carbonatite association within Palaeoproterozoic lower Cuddapah basin, Russ. J. Earth Sci., 20, ES3006, doi:10.2205/2020ES000666.
 

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