xenocryst

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Related to xenocrysts: xenolithic

xen·o·cryst

 (zĕn′ə-krĭst′, zē′nə-)
n.
A crystal foreign to the igneous rock in which it occurs.

xenocryst

(ˈzɛnəˌkrɪst)
n
(Geological Science) a crystal included within an igneous rock as the magma cooled but not formed from it
[C20: from xeno- + cryst(al)]
References in periodicals archive ?
Lavas from the northwestern knoll are fresh, slightly ollvine-phyric lavas with abundant vesicles and rare, partially resorbed plagioclase xenocrysts.
The dyke contains abundant large (up to at least 9 cm) phenocrysts and xenocrysts in addition to a wide variety of xenoliths that include granulite, dunite, lherzolite, werhlite, harzburgite, and pyroxene peridotite (Ross et al.
Unit D is a relatively fresh, mostly dense but locally scoriaceous, porphyritic trachyandesite with ten to fifteen percent large plagioclase xenocrysts and phenocrysts.
It proves that the magma carried numerous mantle-derived xenocrysts.
2004, Discovery of Archean continental and mantle fragments inferred from xenocrysts in komatiites, the Belingwe greenstone belt, Zimbabwe: Geology, v.
minerals, including large chrome diopside xenocrysts and abundant mantle
We consider the first interpretation to be the best explanation for the Brazil Lake tantalite U-Pb results because tantalite is generally quite rare in crustal rocks and it seems remote that there would be tantalite xenocrysts originally present in the Brazil Lake magma.
The latter occurrence probably represent xenocrysts.
Mantle xenoliths and xenocrysts, brought to the surface by diamondiferous kimberlite pipes, provide a complex picture of distinct and stratified mantle domains (Kopylova et al.