Sīd'er-ite, n.
(Synop., § 130), n. [Lat. sideritis, Gr. σιδηρῖτις, σιδηρῖτις, from σίδηρος, iron.]
Sense 1. (Min.) (a.) A hydrous arseniate of iron; cube-ore. (b.) Carbonate of iron; spathic iron. (c.) An indigo blue variety of quartz. Dana.
The name was also formerly applied to magnetic iron ore, or loadstone.
Sense 2. (Bot.) A labiate plant of the genus Sideritis; iron-wort. Coxe. Parr.