Definition
Claystone is a fine-grained, dark gray to pink sedimentary rock which mainly consists of compacted and hardened clay
Diabase is a fine-grained igneous rock which is composed mostly of pyroxene and feldspar
History
Origin
-
Germany
Discoverer
Unknown
Christian Leopold von Buch
Etymology
From English clay and stone as the rock contains more amount of clay
From Greek di + base
Class
Sedimentary Rocks
Igneous Rocks
Sub-Class
Durable Rock, Medium Hardness Rock
Durable Rock, Hard Rock
Family
Group
-
Volcanic
Other Categories
Fine Grained Rock, Opaque Rock
Fine Grained Rock, Medium Grained Rock, Opaque Rock