Micropegmatite

1 definition found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Micropegmatite \Mi`cro*peg"ma*tite\, n. [Micro- + pegmatite.]
     (Min.)
     A rock showing under the microscope the structure of a
     graphic granite (pegmatite). -- {Mi`cro*peg`ma*tit"ic}, a.
     [1913 Webster]