Definition
Jaspillite is an iron rich chemically formed rock which is common in banded iron formation rocks
Pegmatite rock is a holocrystalline, intrusive igneous rock which is composed of interlocking phaneritic crystals
History
Origin
Western Australia, Minnesota
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Discoverer
Unknown
R. J. Hauy
Etymology
From Jaspilite (Mineral), a compact siliceous rock which resembles jasper
From Greek pegma, pegmat which means- thing joined together + -ite
Class
Sedimentary Rocks
Igneous Rocks
Sub-Class
Durable Rock, Soft Rock
Durable Rock, Hard Rock
Family
Group
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Plutonic
Other Categories
Coarse Grained Rock, Opaque Rock
Coarse Grained Rock, Opaque Rock