Definition
Jaspillite is an iron rich chemically formed rock which is common in banded iron formation rocks
Migmatite is typically a granitic rock within a metamorphic host rock which is composed of two intermingled but distinguishable components
History
Origin
Western Australia, Minnesota
Southern Alps, France
Discoverer
Unknown
Jakob Sederholm
Etymology
From Jaspilite (Mineral), a compact siliceous rock which resembles jasper
From the Greek word migma which means a mixture
Class
Sedimentary Rocks
Metamorphic Rocks
Sub-Class
Durable Rock, Soft Rock
Durable Rock, Medium Hardness Rock
Family
Group
-
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Other Categories
Coarse Grained Rock, Opaque Rock
Coarse Grained Rock, Fine Grained Rock, Medium Grained Rock, Opaque Rock