Definition
Origin
Discoverer
Etymology
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Other Categories
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
An iron rich extrusive rock found as a member of the alkali basalt magma series
From the name of discoverer, Ben More
Durable Rock, Medium Hardness Rock
Fine Grained Rock, Opaque Rock