Sinter /(?)/

Sin·ter

Sinter

n.
  1. Dross, as of iron; the scale which files from iron when hammered; -- applied as a name to various minerals. (Min.)

Phrases & Compounds

Calcareous sinter
a loose banded variety of calcite formed by deposition from lime-bearing waters; calcareous tufa; travertine.
Ceraunian sinter
fulgurite.
Siliceous sinter
a light cellular or fibrous opal; especially, geyserite (see Geyserite). It has often a pearly luster, and is then called pearl sinter.