successful tool in kimberlite exploration. The installation of a digital AGG system on a helicopter led to the first airborne gravity gradient cum magnetic cum electromagnetic …
There are two main magma types that carry natural diamonds to the surface. These magmas crystallize on cooling into volcanic rocks known as kimberlite …
Serpentine, a Mg-silicate mineral indicative of hydrous alteration, is a ubiquitous component of kimberlites and crystallizes at submag-matic temperatures (after magma …
Kimberlites are rare volcanic rocks with unusually deep origins. This Review explores the origin and evolution of kimberlite melts and their insights into mantle …
Kimberlite melts excoriate the rocks they pass through, tearing up chunks of the mantle from depths of several hundred kilometers. They may (but not always) bear …
Kimberlites, small-volume volcanic rocks that are the source of most diamonds, offer rare insights into aspects of the composition of the Earth's deep mantle. …
All of the Botswana diamond production is extracted from a group of volcanic rocks known as kimberlites. From an exploration perspective, a total of 405 …
Using sensitive radioisotope tracers, we can map the evolution of their mantle sources through time. Our results show that, …
Kimberlite is defined as a volatile-rich, potassic, ultrabasic igneous rock that occurs as small volcanic pipes, dykes and sills. It has an inequigranular texture resulting from the …
Kimberlite rocks and deposits are the eruption products of volatile-rich, silica-poor ultrabasic magmas that originate as small-degree mantle melts at depths in excess of …