Definition
Trachyandesite is an extrusive igneous rock.
An iron rich extrusive rock found as a member of the alkali basalt magma series
History
Origin
Indonesia
Isle of Mull, Scotland
Discoverer
Unknown
Ben More
Etymology
From French trachyandésite, trachy + andésite andesite, a lava intermediate in composition between trachyte and andesite
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