sparry limestone

from The Collaborative International Dictionary of English v.0.48

Sparry \Spar"ry\, a. [From {Spar}.]
   Resembling spar, or consisting of spar; abounding with spar;
   having a confused crystalline structure; spathose.
   [1913 Webster]

   {Sparry iron} (Min.), siderite. See {Siderite}
   (a) .

   {Sparry limestone} (Min.), a coarsely crystalline marble.
      [1913 Webster]