Definition
Dacite is a volcanic igneous rock which is rintermediate in composition between andesite and rhyolite
Gritstone or grit is a hard, coarse-grained, siliceous sandstone
History
Origin
Romania and Moldova, Europe
Pennines, England
Discoverer
Unknown
J.J. Ferber
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 Grit + Stone
Class
Igneous Rocks
Sedimentary Rocks
Sub-Class
Durable Rock, Soft Rock
Durable Rock, Hard Rock
Family
Group
Volcanic
-
Other Categories
Fine Grained Rock, Medium Grained Rock, Opaque Rock
Coarse Grained Rock, Opaque Rock