Definition
Jaspillite is an iron rich chemically formed rock which is common in banded iron formation rocks
Variolites are a group of dark green basic igneous rocks which exhibit pale colored spots, or spherules, especially on weathered surfaces, that give them a pockmarked appearance
History
Origin
Western Australia, Minnesota
France
Discoverer
Unknown
Unknown
Etymology
From Jaspilite (Mineral), a compact siliceous rock which resembles jasper
From Latin varius, speckled, variegated
Class
Sedimentary Rocks
Igneous Rocks
Sub-Class
Durable Rock, Soft Rock
Durable Rock, Hard Rock
Family
Group
-
Volcanic
Other Categories
Coarse Grained Rock, Opaque Rock
Opaque Rock