As nouns the difference between basalt and pentagonite
is that basalt
is basalt while pentagonite
is (mineralogy) a silicate of calcium and vanadium found in basalts and tuffs.
(mineral) A hard mafic igneous rock of varied mineral content; volcanic in origin, it makes up much of the Earth's oceanic crust.
A type of unglazed pottery.
(mineralogy) A silicate of calcium and vanadium found in basalts and tuffs