Lamellar
Consisting of thin or extended plates, layers, or scales; distributed or disposed in thin, filmy processes.
Lampblack consists of a very fine description of infinitely divided charcoal. It is commonly made by heating in an iron vessel vegetable matters rich in carbon, including tar and resins, the vapors of which are burnt in a current of air insufficient for complete combustion; consequently the hydrogen burns away and leaves the carbon behind in a finely divided condition on the walls of the chamber, which are hung with coarse cloths. Lampblack thus obtained invariably contains more or less unburnt resinous or fatty matters. When it is required to obtain a small quantity of very fine lampblack, it may be done by holding a cold plate over a common gas flame until sufficient has been deposited. See CARBON; CHARCOAL.