Definition
Jaspillite is an iron rich chemically formed rock which is common in banded iron formation rocks
Dacite is a volcanic igneous rock which is rintermediate in composition between andesite and rhyolite
History
Origin
Western Australia, Minnesota
Romania and Moldova, Europe
Discoverer
Unknown
Unknown
Etymology
From Jaspilite (Mineral), a compact siliceous rock which resembles jasper
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, Opaque Rock
Fine Grained Rock, Medium Grained Rock, Opaque Rock