Definition
Tephrite is an aphanitic to porphyritic textured, volcanic igneous rock
Gabbro is an intrusive igneous rock which is chemically equivalent to plutonic Basalt
History
Origin
Germany
Germany
Discoverer
Van Tooren
Christian Leopold von Buch
Etymology
From Greek tephra, ashes from Indo-European base, to burn
From Latin glaber bare, smooth, bald
Class
Igneous Rocks
Igneous Rocks
Sub-Class
Durable Rock, Hard Rock
Durable Rock, Hard Rock
Family
Group
Volcanic
Plutonic
Other Categories
Coarse Grained Rock, Fine Grained Rock, Medium Grained Rock, Opaque Rock
Coarse Grained Rock, Opaque Rock