Hawaiite
Hawaiite is an olivine basalt with a composition between alkali basalt and mugearite. It was first used as a name for some lavas found on the island of Hawaii.
In gemology, hawaiite is a colloquial term for Hawaii-originated peridot, which is a gem-quality olivine mineral. It occurs during the later stages of volcanic eruptions which happens to be when the alkaline metals are most present.
