Basalt

right|thumb|Spilite Spilite (from ) is a fine-grained igneous rock, resulting particularly from alteration of oceanic basalt.

structural fibres spun from melted basalt

result of a very large volume eruption of basalt lava

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.

variety of high-magnesium olivine basalt that is very rich in the mineral olivine

thumb|upright=1.35|Potassic trachybasalt from the July–August 2001 eruption of Mount Etna, Italy thumb|Satellite image of Bayuda volcanic field in Sudan where [[nepheline-rich trachybasalt lavas have been erupted during the Holocene epoch]] Trachybasalt is a volcanic rock with a composition between trachyte and basalt. It resembles basalt but has a high content of alkali metal oxides. Minerals in trachybasalt include alkali feldspar, calcic plagioclase, olivine, clinopyroxene and likely very small amounts of leucite or analcime.

Mugearite () is a type of oligoclase-bearing basalt, comprising olivine, apatite, and opaque oxides. The main feldspar in mugearite is oligoclase.

series of sub-alkaline magmas

mainly alkaline mantle plume generated intra-plate basalts

type of volcanic rock