Definition
Definition
Flint is a hard type of sedimentary rock that produces a small piece of burning material when hit by steel
Rhyolite is a fine-grained igneous rock which is rich in silica
History
Origin
Unknown
North America
Discoverer
Unknown
Ferdinand von Richthofen
Etymology
From Old English flint - a type of rock mainly known for high hardness and for giving off sparks when struck
From German Rhyolit, from Greek rhuax lava stream + lithos stone
Class
Sedimentary Rocks
Igneous Rocks
Sub-Class
Durable Rock, Hard Rock
Durable Rock, Hard Rock
Family
Group
Not Applicable
Volcanic
Other Categories
Fine Grained Rock, Opaque Rock
Coarse Grained Rock, Opaque Rock
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