What's the difference between pegmatite and pegmatitic?

Pegmatite

Definition:

• (n.) Graphic granite. See under Granite.
• (n.) More generally, a coarse granite occurring as vein material in other rocks.

Example Sentences:

• (1) A wide spectrum of heterotrophic and autotrophic microorganisms was detected in the zones of decomposition of spodumene and bed rocks, pegmatites and shales, in the spodumene deposit.

Pegmatitic

Definition:

• (a.) Of, pertaining to, or resembling, pegmatite; as, the pegmatic structure of certain rocks resembling graphic granite.

Example Sentences:

• (1) A wide spectrum of heterotrophic and autotrophic microorganisms was detected in the zones of decomposition of spodumene and bed rocks, pegmatites and shales, in the spodumene deposit.