Definition
Anthracite is a type of sedimentary rock which is hard and is variety of coal that has high luster
Cataclasite is a type of cataclastic rock that is formed by fracturing and comminution during faulting. It is normally cohesive and non-foliated, consisting of angular clasts in a finer-grained matrix
History
Origin
Pennsylvania, U.S.
Swiss Alps, Europe
Discoverer
Unknown
Michael Tellinger
Etymology
From Greek anthrakites, from anthrax, anthrak meaning coal
From the Italian word cataclasi
Class
Metamorphic Rocks
Metamorphic Rocks
Sub-Class
Durable Rock, Soft Rock
Durable Rock, Medium Hardness Rock
Family
Group
-
-
Other Categories
Coarse Grained Rock, Fine Grained Rock, Medium Grained Rock, Opaque Rock
Fine Grained Rock, Opaque Rock