- Kimberlite is a dark-colored, heavy, often altered and brecciated intrusive igneous rock that contains diamonds in its rock matrix1. It is a highly variable mixture of melt, minerals crystallizing from the melt, and foreign crystals and rock pieces2. Kimberlite occurs in the Earth's crust in vertical structures known as kimberlite pipes, as well as igneous dykes and horizontal sills3. Kimberlite pipes are the most important source of mined diamonds today3. Kimberlite is an ultramafic rock derived from the mantle45.Learn more:✕This summary was generated using AI based on multiple online sources. To view the original source information, use the "Learn more" links.
Kimberlite, also called blue ground, a dark-coloured, heavy, often altered and brecciated (fragmented), intrusive igneous rock that contains diamonds in its rock matrix. It has a porphyritic texture, with large, often rounded crystals (phenocrysts) surrounded by a fine-grained matrix (groundmass).
www.britannica.com/science/kimberliteKimberlite is the name given to a silica-poor and magnesium-rich extrusive igneous rock (e.g., a volcanic rock) that contains major amounts of olivine, often serpentinized. It is a highly variable mixture of melt, minerals crystallizing from the melt, and foreign crystals and rock pieces.
www.gia.edu/gems-gemology/summer-2019-kimbe…Kimberlite occurs in the Earth's crust in vertical structures known as kimberlite pipes, as well as igneous dykes. Kimberlite also occurs as horizontal sills. Kimberlite pipes are the most important source of mined diamonds today. The consensus on kimberlites is that they are formed deep within the mantle.en.wikipedia.org/wiki/KimberliteKimberlite is an ultramafic rock derived from the mantle. Diamonds crystallize in the mantle well below the crust but they are carried up into the crust by the rising kimberlitic magma. Only 1% of kimberlite is economic and these are almost always found in or above Archean cratons.www.911metallurgist.com/blog/kimberlite-deposits …Kimberlite is composed of at least 35% olivine, together with other minerals such as mica, serpentine, and calcite (Jackson, 1997). Geologists call it an ultrabasic rock, which means it does not contain any quartz or feldspar, the two most common rock-forming minerals.www.kgs.ku.edu/Publications/pic16/pic16_2.html - People also ask
Kimberlite | Properties, Composition and Formation - Geology …
Based on studies on a large number of kimberlite deposits,geologists divided the kimberlites into 3 separate units based on theirmorphology and petrology. These units are: 1. Crater Facies Kimberlite 2. Diatreme Facies Kimberlite 3. Hypabyssal Facies Kimberlite See more
Carbon is one of the most common elements in the world Andis one of the four essentials for the existence of life. Humans are more … See more
Mitchell (1986) consider several theories and presents amore comprehensive critique of each emplacement theory. 1. Explosive volcanism theory 2. Magmatic (fluidization) theory 3. Hydrovolcanic theory See more
Both the location and origin of kimberlitic magmas aresubjects of contention. Their extreme enrichment and geochemistry have led to alarge amount of speculation about their origin, … See more
The geochemistry of Kimberlites is defined by the followingparameters: ultramafic, MgO >12% and generally >15%; ultrapotassic, molar K2O/Al2O3 >3; near-primitive Ni (>400 ppm), Cr (>1000 ppm), Co(>150 ppm); REE-enrichment; moderate to high … See more
Kimberlite - Wikipedia
Kimberlite exploration techniques encompass a multifaceted approach that integrates geological, geochemical, and geophysical methodologies to locate and evaluate potential diamond-bearing deposits.
Exploration techniques for kimberlites primarily hinge on the identification and analysis of indicator minerals associated with the presence of kimberlite pipes and their potential diamond cargo. Se…Wikipedia · Text under CC-BY-SA licenseALEX STREKEISEN-Kimberlite-
Kimberlites. The first Kimberlites were described by Vanuxen in 1837 from Ludlowiville near Ithaca, New York state; however, the term Kimberlite was introduced by Lewis (1887) to describe the diamond-bearing, porphyritic mica …
Genesis and evolution of kimberlites - Nature
Oct 3, 2023 · Kimberlites are rare volcanic rocks with unusually deep origins. This Review explores the origin and evolution of kimberlite melts and their insights into mantle composition …
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May 15, 2019 · Kimberlite is the name given to a silica-poor and magnesium-rich extrusive igneous rock (e.g., a volcanic rock) that contains major amounts of olivine, often …
Tags:Kimberlites FormationKimberlite MagmaVolcanic EruptionKimberlites reveal 2.5-billion-year evolution of a deep, …
Sep 25, 2019 · 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. The radiogenic isotope ratios of...
Tags:Publish Year:2019Kimberlite: A Rare, Brecciated Diamond Bearing Mantle …
Jul 17, 2023 · Kimberlite is a potassic to ultrapotassic ultramafic rock with inequigranular texture. It is a rare type of peridotite with many xenoliths and xenocrysts, including, on rare occasions, diamonds. For this reason, some …
Tags:Base CRMKimberlite DiamondEnigmatic origin of diamond-bearing rocks revealed
Sep 25, 2019 · Rare volcanic rocks known as kimberlites are produced from magmas that originate in Earth’s mantle and then erupt onto the planet’s surface. These rocks have a violent eruption style, and a...
Tags:Publish Year:2019Volcanic EruptionDiamond Bearing RocksKimberlite: A Unique Probe into the Deep Earth - GeoScienceWorld
Dec 1, 2019 · Kimberlites tap the deepest recesses of our planet that we can sample. Propelled by a formidable volatile load, kimberlite melts transit hundreds of kilometers of mantle and …
Tags:Kimberlite CompositionKimberlites FormationPublish Year:2019Kimberlite | Diamonds, Volcanic, Magma | Britannica
Kimberlite, a dark-coloured, heavy, often altered and brecciated (fragmented), intrusive igneous rock that contains diamonds in its rock matrix. It has a porphyritic texture, with large, often rounded crystals (phenocrysts) …
Tags:Kimberlite MagmaThe Editors of Encyclopaedia Britannica
