pegmatite's Usage Examples:

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

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

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.

On a recent backpacking trip to the Cairngorms, I wore one for 4 days, without the slightest hint of a nasty pong!The minerals of the Cairngorms are generally associated with granitic pegmatites.

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

This rock has pre and contemporaneous pegmatites containing muscovite and tourmaline.

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

The Separation Lake area is host to the most important rare-element pegmatites in Ontario, Canada.

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.

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

The minerals of the Cairngorms are generally associated with granitic pegmatites.