Origin of specular
Examples from the Web for specular
Specular haematite forms a constituent of certain schistose rocks, such as the Brazilian itabirite.
According to Campbell-Swinton the “diffuse” reflection is accompanied by a certain amount of “specular” reflection.
Galena is often mistaken for other ores, specular iron ore for instance.The A B C of Mining|Charles A. Bramble
That done he will choose a specular point himself and keep a sharp look-out.The Sportsman|Xenophon
There are no metallic ores, nor has any sulphur been found; but a little iron pyrites and specular iron are occasionally met with.