There are no metallic ores, nor has any sulphur been found; but a little iron pyrites and specular iron are occasionally met with.
Galena is often mistaken for other ores, specular iron ore for instance.
In this phenomenon, therefore, there is no element of specular reflection.
Does it seem cold and unhandsome, this specular survey of persons?
According to Campbell-Swinton the “diffuse” reflection is accompanied by a certain amount of “specular” reflection.
Magnetite or magnetic iron ore, specular iron, and limonite are also oxides of iron.
That done he will choose a specular point himself and keep a sharp look-out.
It is a mistake to suppose any specular iron ore capable of yielding 85 per cent.
specular Iron Ore, from near Leesburg, said to be in quantity.
specular haematite forms a constituent of certain schistose rocks, such as the Brazilian itabirite.