Definition
Lignite is a soft brownish coal which shows traces of plants and is intermediate between bituminous coal and peat
Dacite is a volcanic igneous rock which is rintermediate in composition between andesite and rhyolite
History
Origin
France
Romania and Moldova, Europe
Discoverer
Unknown
Unknown
Etymology
From French, Latin lignum wood + -ite1
From Dacia, a province of the Roman Empire which lay between the Danube River and Carpathian Mountains where the rock was first described
Class
Sedimentary Rocks
Igneous Rocks
Sub-Class
Durable Rock, Soft Rock
Durable Rock, Soft Rock
Family
Group
-
Volcanic
Other Categories
Coarse Grained Rock, Fine Grained Rock, Medium Grained Rock, Opaque Rock
Fine Grained Rock, Medium Grained Rock, Opaque Rock