pegmatite meaning in Hindi

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It is also found in pegmatite in Madagascar and in Brazil.
Wolframite is found in quartz veins and pegmatites associated with intrusives.
It is a product of the decomposition of beryl in pegmatites.
Brockite occurs in granite and granite pegmatite as an accessory mineral.
The most important sources of sheet mica are pegmatite deposits.
Some skarns associated with granites also tend to host pegmatites.
Beryllium becomes concentrated in felsic pegmatites in which chromium is almost absent.
Pyrochlore occurs in pegmatites associated with nepheline syenites and other alkalic rocks.
Spodumene occurs in lithium-rich granite pegmatites and aplites.
This was on a base of pegmatite and Yorkshire sandstone.

noun.

a form of igneous rock consisting of extremely coarse granite resulting from the crystallization of magma rich in rare elements