Definition
Diatomite is a fine-grained sedimentary rock which is formed from consolidated diatomaceous earth
Migmatite is typically a granitic rock within a metamorphic host rock which is composed of two intermingled but distinguishable components
History
Origin
Germany
Southern Alps, France
Discoverer
Unknown
Jakob Sederholm
Etymology
From diatom + -ite1
From the Greek word migma which means a mixture
Class
Sedimentary Rocks
Metamorphic Rocks
Sub-Class
Durable Rock, Soft Rock
Durable Rock, Medium Hardness Rock
Family
Group
-
-
Other Categories
Fine Grained Rock, Opaque Rock
Coarse Grained Rock, Fine Grained Rock, Medium Grained Rock, Opaque Rock