Definition
Trachyte is a grey fine-grained volcanic rock which mainly consists of alkali feldspar
An iron rich extrusive rock found as a member of the alkali basalt magma series
History
Origin
-
Isle of Mull, Scotland
Discoverer
Alexandre Brongniart and René Just Haüy
Ben More
Etymology
From Greek trakhus rough’ or trakhutēs roughness
From the name of discoverer, Ben More
Class
Igneous Rocks
Igneous Rocks
Sub-Class
Durable Rock, Medium Hardness Rock
Durable Rock, Medium Hardness Rock
Family
Group
Volcanic
Volcanic
Other Categories
Fine Grained Rock, Opaque Rock
Fine Grained Rock, Opaque Rock