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Related to pegmatitic: aphanitic, porphyritic, Pegmatitic Texture


A coarse-grained granite, sometimes rich in rare elements such as uranium, tungsten, and tantalum.

[Greek pēgma, pēgmat-, something fastened together (from pēgnunai, to fasten; see pag- in Indo-European roots) + -ite.]

peg′ma·tit′ic (-tĭt′ĭk) adj.
References in periodicals archive ?
5 Ma, and a pegmatitic dyke in the same area yielded a U-Pb monazite age of 390 [+ or -] 8 Ma and a U-Pb zircon age 400 [+ or -] 5 Ma (Thorne et al.
Smaller kilometre scale, more fractionated granitic intrusive bosses occur within the metasediments and are spatially associated with pegmatitic vein swarms.
These marbles have been locally replaced by abundant skarn mineral association near the contact with orthoamphibolites, which are crosscut by pegmatitic veins.
Pegmatitic and fine-grained leucocratic bodies of variable size are frequent and usually showing sharp contacts with the Main Unit.
Characterization of bacterial community structure on a weathered pegmatitic granite.
Origin of pegmatitic granitesegregations, Willow Creek, Black Hills, South Dakota.
The top of the Greater Himalayan sequence in the map-area is intruded by an undeformed, pegmatitic leucogranite stock.
The famous mineral and gem localities in Madagascar, including all of the pegmatitic occurrences, were emplaced within the upper Proterozoic crystalline basement.
It is greyish pink with porphidic to pegmatitic and rapakivi (K-feldspar phenocrystal up to 12 cm) textures.