Definition
Lignite is a soft brownish coal which shows traces of plants and is intermediate between bituminous coal and peat
Granulite is fine to medium grained metamorphic rock with a granular of polygonal crystals.
History
Origin
France
Central Europe
Discoverer
Unknown
Unknown
Etymology
From French, Latin lignum wood + -ite1
From Latin granulum, a little grain or fine grained
Class
Sedimentary Rocks
Metamorphic Rocks
Sub-Class
Durable Rock, Soft Rock
Durable Rock, Hard Rock
Family
Group
-
-
Other Categories
Coarse Grained Rock, Fine Grained Rock, Medium Grained Rock, Opaque Rock
Coarse Grained Rock, Medium Grained Rock, Opaque Rock