Emily Dickinson Lexicon

TI-TA'NI-UM, n.

In mineralogy, a metal discovered by Gregor in 1791, in Cornwall, England. It is of a deep blue color. It occurs in different states of oxydation or inter-mixture, in various parts of the world. The ores of this metal are called menachanite, from Menachan in Cornwall, where it was originally found; iserine, from the river Iser, in Silesia; nigrine, from its black color; sphene, rutile, and octahedrite.