Definition
Diatomite is a fine-grained sedimentary rock which is formed from consolidated diatomaceous earth
Teschenite is coarse- to fine-grained, dark-coloured intrusive igneous rock that usually occurs in sills, dikes and irregular masses and is always altered to some extent
History
Origin
Germany
Scotland
Discoverer
Unknown
Unknown
Etymology
From diatom + -ite1
From its occurrence near Teschen. now known as Cieszyn, Pol., Scotland
Class
Sedimentary Rocks
Igneous Rocks
Sub-Class
Durable Rock, Soft Rock
Durable Rock, Hard Rock
Family
Group
-
Plutonic
Other Categories
Fine Grained Rock, Opaque Rock
Coarse Grained Rock, Opaque Rock