Updated About encyclopedia.com content Print Article
incompatible elements (hygromagmatophile elements) Elements that, owing to their size, charge, or valency requirements, are difficult to substitute into the crystal structure of a rock-forming mineral (e.g. the boron ion is very small and the tungsten ion may have a +6 charge). This results in their being preferentially introduced into a magma on partial melting and less likely to crystallize out of it. During the crystallization of igneous rocks, incompatible elements (e.g. Sn, Li, Rb, Sr, and rare earth elements) are often concentrated into pegmatitic or hydrothermal fluids. During the formation of the Earth's crust the incompatible elements have been transferred through magmatic processes to the crust from the mantle, which has consequently become depleted in these elements.
More From encyclopedia.com
Electropositive Element , Skip to main content electropositive element Essential Element , essential element Any of a number of elements required by living organisms to ensure normal growth, development, and maintenance. Apart from the elem… Nobelium , The first claim for the discovery of the element nobelium was made in Sweden in 1957. However, neither American nor Soviet researchers could duplicat… Neodymium , Neodymium (revised) Note: This article, originally published in 1998, was updated in 2006 for the eBook edition. Overview Neodymium was discovered in… Dysprosium , Dysprosium (revised) Note: This article, originally published in 1998, was updated in 2006 for the eBook edition. Overview Dysprosium is one of 15 ra… Cs (element) , caesium-137 (seez-iŭm) n. an artificial radioactive isotope of the metallic element caesium, used rarely in radiotherapy. Symbol: 137Cs. See also tel…
You Might Also Like