Definition
Mylonite is a metamorphic rock formed by ductile deformation during intense shearing encountered during folding and faulting, a process termed cataclastic or dynamic metamorphism
Picrite is a variety of high-magnesium olivine basalt that is very rich in the mineral olivine
History
Origin
New Zealand
Hawaii Islands
Discoverer
Unknown
Unknown
Etymology
From Greek mulōn mill + -ite
From Greek pikros bitter + -ite, 19th century
Class
Metamorphic Rocks
Igneous Rocks
Sub-Class
Durable Rock, Medium Hardness Rock
Durable Rock, Hard Rock
Family
Group
-
Volcanic
Other Categories
Fine Grained Rock, Opaque Rock
Fine Grained Rock, Opaque Rock