BASANITE
Etymology
Noun
basanite (plural basanites)
(geology) A basaltic extrusive rock, similar to chert.
Synonyms
• lydite
Anagrams
• Batesian, absentia
Source: Wiktionary
Bas"a*nite, n. Etym: [L. basanites lapis, Gr. the touchstone: cf. F.
basanite.] (Min.)
Definition: Lydian stone, or black jasper, a variety of siliceous or flinty
slate, of a grayish or bluish black color. It is employed to test the
purity of gold, the amount of alloy being indicated by the color left
on the stone when rubbed by the metal.
Source: Webster’s Unabridged Dictionary 1913 Edition