“In similar contrast to the Okenyenya xenolith suite, lithologies such as wehrlite, eclogite and pyroxenite are also absent.”

“It occurs in a marble xenolith included in a nepheline syenite, associated with pectolite, apophyllite, quartz and minor aegirine.”

“The xenolith is composed predominantly of biotite and microcline with minor amounts of catapleiite, apatite, zircon and other accessory minerals.”

“To date, the only described mantle xenoliths from NW Namibia occur in an alnoite diatreme emplaced in the Mesozoic Okenyenya alkaline complex.”

“In addition to scoria and ash, other volcanic ejecta include blocks, bombs, and xenoliths.”

“The basalt, inferred to be of Miocene age, appears to be an alkali basalt that contains xenoliths of ultramafic rocks up to a few centimeters in size.”