1 Definition
1.1 Definition
Granite is a very hard, granular, crystalline igneous rock which consists mainly of quartz, mica, and feldspar and is often used as building stone
Chert is a hard, dark, opaque sedimentary rock which is composed of silica with an amorphous fine-grained texture
1.2 History
1.2.1 Origin
1.0.1 Discoverer
1.2 Etymology
From Italian granito, which means grained rock, from grano grain, and from Latin granum
From flint-like quartz, 1670s, of unknown origin- a local term, which has been taken into geological use
1.3 Class
Igneous Rocks
Sedimentary Rocks
1.3.2 Sub-Class
Durable Rock, Hard Rock
Durable Rock, Hard Rock
1.4 Family
1.4.1 Group
1.6 Other Categories
Coarse Grained Rock, Opaque Rock
Fine Grained Rock, Opaque Rock