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