Definition
Lignite is a soft brownish coal which shows traces of plants and is intermediate between bituminous coal and peat
Pantellerite is a peralkaline rhyolite. It has a higher iron and lower aluminium composition than comendite
History
Origin
France
Strait of sicily
Discoverer
Unknown
Unknown
Etymology
From French, Latin lignum wood + -ite1
From Pantelleria, a volcanic island in the Strait of Sicily
Class
Sedimentary Rocks
Igneous Rocks
Sub-Class
Durable Rock, Soft Rock
Durable Rock, Hard Rock
Family
Group
-
Volcanic
Other Categories
Coarse Grained Rock, Fine Grained Rock, Medium Grained Rock, Opaque Rock
Fine Grained Rock, Opaque Rock