Definition
Tachylite is a vitreous form of basaltic volcanic glass. This glass is formed naturally by the rapid cooling of molten basalt
Diabase is a fine-grained igneous rock which is composed mostly of pyroxene and feldspar
History
Origin
Iceland
Germany
Discoverer
Unknown
Christian Leopold von Buch
Etymology
From German Tachylite, from tachy- + Greek lutos soluble, melting
From Greek di + base
Class
Igneous Rocks
Igneous Rocks
Sub-Class
Durable Rock, Medium Hardness 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