Definition
Diabase is a fine-grained igneous rock which is composed mostly of pyroxene and feldspar
Trachyandesite is an extrusive igneous rock.
History
Origin
Germany
Indonesia
Discoverer
Christian Leopold von Buch
Unknown
Etymology
From Greek di + base
From French trachyandésite, trachy + andésite andesite, a lava intermediate in composition between trachyte and andesite
Class
Igneous Rocks
Igneous Rocks
Sub-Class
Durable Rock, Hard Rock
Durable Rock, Medium Hardness Rock
Family
Group
Volcanic
Volcanic
Other Categories
Fine Grained Rock, Medium Grained Rock, Opaque Rock
Fine Grained Rock, Opaque Rock