1 Definition
1.1 Definition
Phonolite is an uncommon extrusive igneous rock volcanic rock of intermediate chemical composition between felsic and mafic
Claystone is a fine-grained, dark gray to pink sedimentary rock which mainly consists of compacted and hardened clay
1.2 History
1.2.1 Origin
1.2.2 Discoverer
1.3 Etymology
From the Greek meaning sounding stone because of the metallic sound it produces if an unfractured plate is hit
From English clay and stone as the rock contains more amount of clay
1.4 Class
Igneous Rocks
Sedimentary Rocks
1.4.1 Sub-Class
Durable Rock, Medium Hardness Rock
Durable Rock, Medium Hardness Rock
1.5 Family
1.5.1 Group
Not Applicable
Not Applicable
1.6 Other Categories
Fine Grained Rock, Opaque Rock
Fine Grained Rock, Opaque Rock