Definition
Tephrite is an aphanitic to porphyritic textured, volcanic igneous rock
Diatomite is a fine-grained sedimentary rock which is formed from consolidated diatomaceous earth
History
Origin
Germany
Germany
Discoverer
Van Tooren
Unknown
Etymology
From Greek tephra, ashes from Indo-European base, to burn
From diatom + -ite1
Class
Igneous Rocks
Sedimentary Rocks
Sub-Class
Durable Rock, Hard Rock
Durable Rock, Soft Rock
Family
Group
Volcanic
-
Other Categories
Coarse Grained Rock, Fine Grained Rock, Medium Grained Rock, Opaque Rock
Fine Grained Rock, Opaque Rock