Definition
Dacite is a volcanic igneous rock which is rintermediate in composition between andesite and rhyolite
Jaspillite is an iron rich chemically formed rock which is common in banded iron formation rocks
History
Origin
Romania and Moldova, Europe
Western Australia, Minnesota
Discoverer
Unknown
Unknown
Etymology
From Dacia, a province of the Roman Empire which lay between the Danube River and Carpathian Mountains where the rock was first described
From Jaspilite (Mineral), a compact siliceous rock which resembles jasper
Class
Igneous Rocks
Sedimentary Rocks
Sub-Class
Durable Rock, Soft Rock
Durable Rock, Soft Rock
Family
Group
Volcanic
-
Other Categories
Fine Grained Rock, Medium Grained Rock, Opaque Rock
Coarse Grained Rock, Opaque Rock