A newly discovered kimberlitic rock from Pakistan

Zulfiqar Ahmed, George R. McCormick
1990 Mineralogical magazine  
This first report of the occurrence of a kimberlitic rock in Pakistan is supported by its field relations, textures and mineral chemistry. Linear dykes, lenses, conical and pipe-like bodies, plugs and sills intrude non-orogenic, early Jurassic limestone near the SW extremity of an Eocene-emplaced ophiolite on the transform-type Indian plate margin; far away from the stable Precambrian craton. The rock resembles 'micaceous kimberlites' petrographically and contains olivine, phlogopite,
more » ... , chromian spinel, monticellite, chlorite, serpentine, calcite, apatite, pectolite, clinopyroxene, amphibole, nepheline, magnetite and titanomagnetite. The minerals and their microprobe analyses resemble those of kimberlitic rocks.
doi:10.1180/minmag.1990.054.377.02 fatcat:fxusykv3wnbwfgajibfy334qyi