Definition
Origin
Discoverer
Etymology
Class
Sub-Class
Group
Other Categories
Marl is an unconsolidated sedimentary rock consisting of clay and lime
From Old French marle, from Late Latin marglia
Fine Grained Rock, Opaque Rock
Nepheline Syenite is a holocrystalline plutonic rock resembling syenite but containing nepheline and lacking quartz
From origin of a Palaeozoic nepheline syenite from northern Shanxi Province, China
Durable Rock, Medium Hardness Rock
Fine Grained Rock, Opaque Rock