Definition
Rhyolite is a fine-grained igneous rock which is rich in silica
Laterite rock is a type of Sedimentary rock which is rich in iron and aluminium, formed in hot and wet tropical areas
History
Origin
North America
India
Discoverer
Ferdinand von Richthofen
Francis Buchanan-Hamilton
Etymology
From German Rhyolit, from Greek rhuax lava stream + lithos stone
From Latin later brick, tile + -ite1
Class
Igneous Rocks
Sedimentary Rocks
Sub-Class
Durable Rock, Hard Rock
Durable Rock, Soft Rock
Family
Group
Volcanic
-
Other Categories
Coarse Grained Rock, Opaque Rock
Fine Grained Rock, Opaque Rock