Definition
Origin
Discoverer
Etymology
Class
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Other Categories
Norite is a mafic intrusive igneous rock composed largely of the calcium-rich plagioclase labradorite, orthopyroxene, and olivine
From the Norwegian name for Norway, Norge
Coarse Grained Rock, Opaque Rock
Syenite is a coarse-grained igneous rock which is composed mainly of alkali feldspar and various ferromagnesian minerals
From French syénite, from Latin Syenites (lapis ) (stone) of Syene
Durable Rock, Medium Hardness Rock
Coarse Grained Rock, Fine Grained Rock, Medium Grained Rock, Opaque Rock