Definition
Lignite is a soft brownish coal which shows traces of plants and is intermediate between bituminous coal and peat
Aplite is a fine-grained granite composed mainly of feldspar and quartz
History
Origin
France
Iran
Discoverer
Unknown
Unknown
Etymology
From French, Latin lignum wood + -ite1
From German Aplit, from Greek haploos simple + -ite
Class
Sedimentary Rocks
Igneous Rocks
Sub-Class
Durable Rock, Soft Rock
Durable Rock, Hard Rock
Family
Group
-
Plutonic
Other Categories
Coarse Grained Rock, Fine Grained Rock, Medium Grained Rock, Opaque Rock
Fine Grained Rock, Opaque Rock