Definition
Rhyodacite is an extrusive volcanic rock intermediate in composition between dacite and rhyolite
An iron rich extrusive rock found as a member of the alkali basalt magma series
History
Origin
USA
Isle of Mull, Scotland
Discoverer
Unknown
Ben More
Etymology
Rhyo lite + dacite : a rock intermediate between rhyolite and dacite that is the extrusive equivalent of granodiorite
From the name of discoverer, Ben More
Class
Igneous Rocks
Igneous Rocks
Sub-Class
Durable Rock, Medium Hardness Rock
Durable Rock, Medium Hardness Rock
Family
Group
Volcanic
Volcanic
Other Categories
Fine Grained Rock, Opaque Rock
Fine Grained Rock, Opaque Rock