Definition
Nephelinite is a fine-grained or aphanitic igneous rock made up almost entirely of nepheline and clinopyroxene (variety augite).
A sedimentary rock, deposit of a submarine turbidity currents and are composed of layered particles
History
Origin
Brazil
European Foreland Basins
Discoverer
Unknown
Arnold H. Bouma
Etymology
from French néphéline, from Greek nephelē
From Medieval Latin turbiditas, from Latin turbidus (turbid). Turbidity current is from 1939
Class
Igneous Rocks
Sedimentary Rocks
Sub-Class
Durable Rock, Hard Rock
Durable Rock, Soft Rock
Family
Group
Plutonic
-
Other Categories
Fine Grained Rock, Opaque Rock
Coarse Grained Rock, Fine Grained Rock, Opaque Rock