Definition
Dolomite is a sedimentary rock containing more than 50 percent of the mineral dolomite by weight
Rhyolite is a fine-grained igneous rock which is rich in silica
History
Origin
Southern Alps, France
North America
Discoverer
Dolomieu
Ferdinand von Richthofen
Etymology
From French, from the name of Dolomieu (1750–1801), the French geologist who discovered the rock
From German Rhyolit, from Greek rhuax lava stream + lithos stone
Class
Sedimentary Rocks
Igneous Rocks
Sub-Class
Durable Rock, Medium Hardness Rock
Durable Rock, Hard Rock
Family
Group
-
Volcanic
Other Categories
Coarse Grained Rock, Fine Grained Rock, Medium Grained Rock, Opaque Rock
Coarse Grained Rock, Opaque Rock