Definition
Gritstone or grit is a hard, coarse-grained, siliceous sandstone
Jaspillite is an iron rich chemically formed rock which is common in banded iron formation rocks
History
Origin
Pennines, England
Western Australia, Minnesota
Discoverer
J.J. Ferber
Unknown
Etymology
From Grit + Stone
From Jaspilite (Mineral), a compact siliceous rock which resembles jasper
Class
Sedimentary Rocks
Sedimentary Rocks
Sub-Class
Durable Rock, Hard Rock
Durable Rock, Soft Rock
Family
Group
-
-
Other Categories
Coarse Grained Rock, Opaque Rock
Coarse Grained Rock, Opaque Rock