Definition
Jasperoid is a rare, peculiar type of metasomatic alteration of rocks
Rhyolite is a fine-grained igneous rock which is rich in silica
History
Origin
USA
North America
Discoverer
Unknown
Ferdinand von Richthofen
Etymology
From silica, the main mineral content of Jasperoid
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