Hematite with a metallic luster.
- ‘Gray hematite has a brilliant metallic luster and is known as specular iron ore or looking glass ore.’
- ‘On display are two huge boilers, a three cylinder steam engine, stock anchor, clam anchor and cargo of high grade specular iron ore.’
- ‘Among the valuable specimens of minerals found here may be named, triciliate of iron, sulphuret of bismuth, native copper, specular iron ore, hydrous oxide of iron.’
- ‘It is a type of haematite called specular iron ore.’
- ‘The steel-gray crystals and coarse-grained varieties have a brilliant metallic lustre and are known as specular iron ore or looking glass ore.’
We take a look at several popular, though confusing, punctuation marks.