end member

end member

[′end ‚mem·bər]
(mineralogy)
One of the two or more pure chemical compounds that enters into solid solution with other pure chemical compounds to make up a series of minerals of similar crystal structure (that is, an isomorphous, solid-solution series).
References in periodicals archive ?
He becomes the seventh West End member to have this honour.
The [sup.14]C content is 13.6 pmc, which indicates that this sample may be the last one recharged by rainfall in the ice stage and can be used as the end member of palaeo-groundwater.
While the structural and electronic properties of the one end member potassium niobate (KNb[O.sub.3]) are relatively well known, this is much less the case for the ferroelectric (FE) perovskite sodium niobate (NaNb[O.sub.3]).
Save the Bridge End member Ernest Dobson said: "We are very excited about the possibilities for the future.
The 87Sr/86Sr = 0.704031-0.70525, 206Pb/204Pb = 18.408-19.062, 207Pb/204Pb = 15.476-15.677, 208Pb/204Pb = 38.061-39.414 and eNd = 0.3-5.3 of the volcanic rocks, all of these are similar to the feature of Neo-Tethyan mantle geochemical end member represented by Yaluzangbu ophiolites, and also to the volcanic rocks related to Onto Java and FOZO mantle plume (Yu et al., 2009, 2011).
Contributors describe tutorials, specifically hyperspectral imaging systems and information-processed matching filters for hyperspectral target detection and classification, theory, including an optical real-time adaptive spectral identification system, stochastic mixture modeling, unmixing hyperspectral data through independent and dependent component analysis, maximum volume transform for end member spectra determination, hyperspectral data representation, optimal and selection and utility evaluation for spectral systems, feature reduction for classification purposes, and semi-supervised support vector machines for classification of hyperspectral remote sensing devices.
A fourth end member, such as rifting, could be added, and "plume" was suggested to describe one possible non-subduction-related process.
Our results were lower than the pristine end members (C, 105-121 g/[m.sup.2].year; N, 4.9-6.9 g/[m.sup.2]-year; E 0.08-0.13 g/[m.sup.2].year) and well below the high nutrient end member (C, 212 g/[m.sup.2].year; N, 14.1 g/[m.sup.2].year; P,0.66 g/[m.sup.2].year).
It may involve using pure elements, or end member oxides as standards to determine the composition of a sample similar to the unk nown.
Tantalite is the more tantalum rich end member of the series.
By comparison, the number of complex linkages in the three flow maps for the lowest end member were 0, 8 and 2 and for the highest end member, 7, 8 and 29.