1 Definition
1.1 Definition
Peridotite is a dense, coarse-grained plutonic is the main constituent of the earth's mantle
Syenite is a coarse-grained igneous rock which is composed mainly of alkali feldspar and various ferromagnesian minerals
1.2 History
1.2.1 Origin
1.2.2 Discoverer
1.3 Etymology
From French, from peridot + -ite
From French syénite, from Latin Syenites (lapis ) (stone) of Syene
1.4 Class
Igneous Rocks
Igneous Rocks
1.4.1 Sub-Class
Durable Rock, Medium Hardness Rock
Durable Rock, Medium Hardness Rock
1.5 Family
1.5.1 Group
1.6 Other Categories
Coarse Grained Rock, Opaque Rock
Coarse Grained Rock, Fine Grained Rock, Medium Grained Rock, Opaque Rock