Definition
Diatomite is a fine-grained sedimentary rock which is formed from consolidated diatomaceous earth
Trachyandesite is an extrusive igneous rock.
History
Origin
Germany
Indonesia
Discoverer
Unknown
Unknown
Etymology
From diatom + -ite1
From French trachyandésite, trachy + andésite andesite, a lava intermediate in composition between trachyte and andesite
Class
Sedimentary Rocks
Igneous Rocks
Sub-Class
Durable Rock, Soft Rock
Durable Rock, Medium Hardness Rock
Family
Group
-
Volcanic
Other Categories
Fine Grained Rock, Opaque Rock
Fine Grained Rock, Opaque Rock