दुर्लभ तत्वों में समृद्ध मैग्मा के क्रिस्टलाइजेशन से उत्पन्न होने वाले अनजान रॉक का एक रूप

pegmatite's Usage Examples:

pegmatite veins.

pegmatite fields.

Eight of the holes drilled on Oleninskoye intersected pegmatite within the area where the vein intersection was anticipated.

Pink and white pegmatite typically occurs in veins and contains coarse grained quartz and feldspar.

In pegmatite (graphic granite) and granophyre it often forms a regular intergrowth with felspar.

The varying texture of this rock, its irregular foliation and jointing, and its ramifying veins of pegmatite give it very unequal powers of resistance.

Chaper found diamond with corundum in a decomposed red pegmatite vein in gneiss.

The feldspar of a splendid pegmatite and its products of disintegration on the borders of Owari, Mino and Mikawa form the raw material of the very extensive ceramic industry of this district, with its chief place, Seto.

Large sheets of muscovite, such as are of commercial value, are found only in the very coarsely crystallized pegmatite veins traversing granite, gneiss or micaschist.

The granite, which is intruded through the Eocene beds, is associated with a pegmatite containing tourmaline and cassiterite.

pegmatite's Meaning':

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