Definition
Origin
Discoverer
Etymology
Class
Sub-Class
Group
Other Categories
During the impact melted material forming a breccia containing glass and crystal or lithic fragments together form Suevite rock.
Durable Rock, Medium Hardness Rock
Coarse Grained Rock, Opaque Rock
Ijolite is an intrusive igneous rock which is composed mainly of nepheline and an alkali pyroxene, usually aegirine-augite
From the first syllable of the Finnish words Ii-vaara, Iijoki, &c. commonly used geographical names in Finland, and the Gr. Xiflos, a stone
Durable Rock, Medium Hardness Rock
Coarse Grained Rock, Opaque Rock