Hematite. An important ore of iron, the sesquioxide, so called because of its red color when in the form of powder. It occurs in splendent rhombohedral crystals, and in massive and earthy forms, the last being called red ochre.
“Christ's ... yoke is an easy yoke; his burden like the burden of wings to a bird, that makes her fly the higher.”
–Richard Sibbes, The Bruised Reed and Smoking Flax