Crystal chemistry and Raman spectroscopy of the johnbaumite–hydroxylellestadite mineral series and associated As- and B-bearing minerals from a pyrometamorphic xenolith of the Upper Chegem Caldera, North Caucasus, Kabardino-Balkaria, Russia
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DOI: 10.1180/mgm.2024.87
Abstract: Abstract A calcium-silicate xenolith (no. 11) from the ignimbrite of the Upper Chegem Caldera in Kabardino-Balkaria, Russia, has revealed a diverse mineral assemblage with As- and B-bearing phases from the apatite supergroup such as the… read more here.
Keywords: spectroscopy; chemistry; xenolith; upper chegem ... See more keywords
Petrographic and geochemical evidence of calc-silicate xenolith – magma interaction in the western Bushveld Complex, South Africa
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DOI: 10.25131/sajg.126.0008
Abstract: Underground workings at Rowland Shaft, Lonmin Platinum, near Marikana have exposed a large (>7 x 5 m) calc-silicate xenolith in mottled anorthosite ~20 m below the UG 1 chromitite of the upper Critical Zone. The xenolith comprises… read more here.
Keywords: xenolith; calc silicate; silicate xenolith; magma ... See more keywords