Definition
Novaculite is a dense, hard, fine-grained, siliceous metamorpic rock which is a type of chert that breaks with conchoidal fracture
Dunite is a green to brownish coarse-grained igneous rock mainly consisting of olivine
History
Origin
-
New Zealand
Discoverer
Unknown
Ferdinand von Hochstetter
Etymology
From Latin word novacula, for razor stone
From the name of Dun Mountain, New Zealand, + -ite1
Class
Sedimentary Rocks
Igneous Rocks
Sub-Class
Durable Rock, Hard Rock
Durable Rock, Medium Hardness Rock
Family
Group
-
Plutonic
Other Categories
Fine Grained Rock, Opaque Rock
Coarse Grained Rock, Opaque Rock