The Uranium-rich pegmatitic
rocks described in the region explains the natural origin of radon (CPRM, 2014).
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
These marbles have been locally replaced by abundant skarn mineral association near the contact with orthoamphibolites, which are crosscut by 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
2004) found Al, P, Li, Ti, Ge and Na in the order of > 1 ppm in pegmatitic
quartz, whereas K, Fe, Be, B, Ba, Sr and their trace elements were below the detection limit of LA-ICP-MS.
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
The drill hole encountered fractured granitic basement with pegmatitic
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.