Definition
Trachyte is a grey fine-grained volcanic rock which mainly consists of alkali feldspar
History
Origin
-
Discoverer
Alexandre Brongniart and René Just Haüy
Etymology
From Greek trakhus rough’ or trakhutēs roughness
Class
Igneous Rocks
Sub-Class
Durable Rock, Medium Hardness Rock
Family
Group
Volcanic
Other Categories
Fine Grained Rock, Opaque Rock