Definition
Lignite is a soft brownish coal which shows traces of plants and is intermediate between bituminous coal and peat
Andesite is a dark, fine-grained, brown or greyish intermediate volcanic rock which is a commonly found in lava
History
Origin
France
North America
Discoverer
Unknown
Theodor von Gümbel
Etymology
From French, Latin lignum wood + -ite1
From Andes mountains, where it is found in abundance
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