Definition
Tephrite is an aphanitic to porphyritic textured, volcanic igneous rock
Diabase is a fine-grained igneous rock which is composed mostly of pyroxene and feldspar
History
Origin
Germany
Germany
Discoverer
Van Tooren
Christian Leopold von Buch
Etymology
From Greek tephra, ashes from Indo-European base, to burn
From Greek di + base
Class
Igneous Rocks
Igneous Rocks
Sub-Class
Durable Rock, Hard Rock
Durable Rock, Hard Rock
Family
Group
Volcanic
Volcanic
Other Categories
Coarse Grained Rock, Fine Grained Rock, Medium Grained Rock, Opaque Rock
Fine Grained Rock, Medium Grained Rock, Opaque Rock