1 Definition
1.1 Definition
Jaspillite is an iron rich chemically formed rock which is common in banded iron formation rocks
Tachylite is a vitreous form of basaltic volcanic glass. This glass is formed naturally by the rapid cooling of molten basalt
1.2 History
1.2.1 Origin
Western Australia, Minnesota
Iceland
1.2.2 Discoverer
1.3 Etymology
From Jaspilite (Mineral), a compact siliceous rock which resembles jasper
From German Tachylite, from tachy- + Greek lutos soluble, melting
1.4 Class
Sedimentary Rocks
Igneous Rocks
1.4.1 Sub-Class
Durable Rock, Soft Rock
Durable Rock, Medium Hardness Rock
1.5 Family
1.5.1 Group
1.6 Other Categories
Coarse Grained Rock, Opaque Rock
Coarse Grained Rock, Fine Grained Rock, Medium Grained Rock, Opaque Rock